Explore 1155 Free Online Calculators for Every Need

Q: Are all these calculators free to use?

Yes, all 1155 calculators on this page are completely free to use. There is no sign-up, no app download and no hidden charges - just open the calculator you need and get instant results.

Q: What types of calculators are available?

We cover loans (EMI, home, car, education), investments (SIP, mutual funds, CAGR), tax (income tax, GST, TDS, HRA), deposits (FD, RD, PPF), retirement (NPS, EPF, gratuity), health (BMI, calorie, BMR), math and everyday utility converters.

Q: Do I need to install any app to use these calculators?

No. Every calculator runs directly in your browser on any device - mobile, tablet or desktop. There is nothing to install.

Q: Are the calculator results accurate?

Yes. All calculators use standard financial and mathematical formulas. Loan and investment calculators use the same formulas banks and financial institutions use.

Q: How do I find a specific calculator?

Use the search box at the top of this page, jump to a category, or browse the complete A-Z list of all calculators below.

Q: Can I use these calculators on my mobile phone?

Yes, all calculators are fully responsive and work smoothly on mobile phones, tablets and desktop computers.

Whether you are planning a loan, growing your investments, filing taxes, tracking your fitness or converting everyday units, the right calculator saves you time and effort. That is why we built a collection of 1155 free, easy-to-use online calculators to give you accurate results in seconds.

No apps, no sign-ups - just clean, fast, reliable results. Browse by category below, search for a specific tool, or jump to the complete A-Z list of all calculators.

Loans15 Investments32 Finance38 Tax26 Deposits7 Retirement6 Health26 Other1005

Loans Calculators15

EMI Calculator

Calculate monthly EMI, total interest and total amount for any loan.

Car Loan EMI Calculator

Calculate EMI on your car loan.

Home Loan EMI Calculator

Calculate EMI on your home loan.

Flat vs Reducing Calculator

Compare EMI in flat and reducing balance interest rate schemes.

Education Loan EMI Calculator

Calculate education loan EMI with moratorium period and repayment tenure.

House Affordability Calculator

Calculate how much house you can afford based on your income and expenses.

Down Payment Calculator

Calculate how much down payment you need and how long it will take to save it.

Rent vs Buy Calculator

Compare the financial impact of renting versus buying a home.

Refinance Calculator

Calculate how much you can save by refinancing your loan at a lower rate.

Home Equity Loan Calculator

Calculate EMI on a home equity loan based on your property value.

Business Loan Calculator

Calculate EMI and interest on a business loan.

Auto Lease Calculator

Compare the cost of leasing versus buying a car.

Debt Consolidation Calculator

Calculate how much you can save by consolidating multiple debts into one loan.

Amortization Schedule Calculator

Generate a full amortization schedule with monthly EMI, principal and interest breakdown.

Personal Loan Calculator

Calculate EMI on your personal loan.

Investments Calculators32

Goal Planner Calculator

Find out how much to invest monthly to reach any financial goal.

SIP Calculator

Calculate the future value of your Systematic Investment Plan.

Lumpsum Calculator

Calculate the future value of a one-time investment.

SWP Calculator

Calculate returns from Systematic Withdrawal Plan.

Step Up SIP Calculator

Calculate SIP returns with yearly raise.

Mutual Fund Calculator

Calculate returns on mutual fund investments.

CAGR Calculator

Calculate the Compound Annual Growth Rate of your investment.

ROI Calculator

Calculate return on investment.

Brokerage Calculator

Calculate brokerage and charges for stock orders.

XIRR Calculator

Calculate extended internal rate of return.

Stock Average Calculator

Calculate average price of stock investments.

Margin Calculator

Calculate margin needed for delivery and intraday trading.

MTF Calculator

Calculate margin trading facility (MTF) costs and interest.

STP Calculator

Calculate systematic transfer plan (STP) growth and returns.

Black & Scholes Calculator

Calculate option prices using the Black-Scholes model.

Asset Allocation Calculator

Crorepati Calculator

Calculate how much you need to invest monthly to become a crorepati by a target age.

Magic of Compounding Calculator

See how your investments grow with the power of compounding and the cost of delaying.

Lumpsum vs SIP Calculator

Compare investing a lump sum amount versus investing the same amount via SIP.

Delay Cost Calculator

Calculate how much delaying your investments costs you and what it takes to catch up.

IRR Calculator

Calculate the Internal Rate of Return of an investment with irregular cash flows.

APR Calculator

Calculate the Annual Percentage Rate including fees and charges.

Present Value Calculator

Calculate the present value of a future sum of money.

Future Value Calculator

Calculate the future value of a present sum of money.

Payback Period Calculator

Calculate how long it takes to recover your initial investment.

Average Return Calculator

Calculate the average return on an investment over multiple periods.

Annuity Calculator

Calculate the future value of an annuity with regular payments.

Annuity Payout Calculator

Calculate how much you can withdraw regularly from your annuity.

Pension Calculator

Calculate how much you need to save for a comfortable pension.

Rule of 72 Calculator

Calculate how long it takes for your investment to double using the Rule of 72.

Digital Gold SIP Calculator

Calculate returns on monthly digital gold investments.

Bond Calculator

Calculate bond coupon payments, current yield and approximate yield to maturity.

Finance Calculators38

Savings Calculator

Calculate how your savings grow over time with monthly contributions.

Zakat Calculator

Calculate Zakat (2.5%) on your eligible wealth.

Fuel Cost Calculator

Calculate fuel cost for your journey based on distance and mileage.

Gold Rate Calculator

Calculate the value of your gold based on weight, purity and rate.

Silver Rate Calculator

Calculate the value of your silver based on weight and rate.

Credit Card Debt Payoff Calculator

Calculate how many months it will take to pay off your credit card debt.

Life Insurance Planner

Calculate how much life insurance coverage you need for your family.

Personal Budget Planner

Plan your monthly budget and track how much you can save.

Current Expenses Calculator

Calculate your total monthly and annual expenses for you and your family.

Emergency Fund Calculator

Calculate how much you need to set aside for emergencies.

Debt Evaluation Calculator

Check if your debt is within affordable limits using your debt-to-income ratio.

Debt Reduction Planner

Plan how to pay off your debt faster and see the interest you will save.

Discount Calculator

Calculate the discounted price and savings on any product.

Commission Calculator

Calculate commission earned on sales at a given rate.

Depreciation Calculator

Calculate the depreciation of an asset over its useful life.

APY Calculator

Calculate the Annual Percentage Yield including the effect of compounding.

How Long to Save Calculator

Calculate how long it will take to reach your savings goal.

How Long Will Money Last Calculator

Calculate how long your savings will last with regular withdrawals.

Interest Rate Calculator

Calculate the interest rate required to reach a savings goal.

Loan Payoff Calculator

Calculate how long it takes to pay off a loan with extra payments.

Savings Goal Calculator

Calculate how much you need to save monthly to reach a goal.

Investment Calculator

Calculate the future value of an investment with regular contributions.

Money Counter Calculator

Count the total value of your cash notes and coins.

Price per Square Foot Calculator

Calculate the price per square foot of a property.

Cash Back Calculator

Compare cash back offers versus a lower interest rate.

Pay Raise Calculator

Calculate your new salary after a pay raise.

Hourly to Salary Calculator

Convert your hourly wage to an annual salary.

Salary to Hourly Calculator

Convert your annual salary to an hourly rate.

Overtime Calculator

Calculate your pay including overtime hours.

Time and a Half Calculator

Calculate time and a half pay for overtime work.

7th Pay Commission Calculator

Calculate your salary under the 7th Pay Commission with fitment factor and allowances.

8th Pay Commission Calculator

Calculate your estimated salary under the 8th Pay Commission with fitment factor.

UAE Gratuity Calculator

Calculate end of service gratuity for UAE employees under the Labour Law.

Currency Converter

Convert between major world currencies including INR, USD, EUR and GBP.

Simple Interest Calculator

Calculate simple interest on loans and investments.

Compound Interest Calculator

Calculate compound interest with ease.

Inflation Calculator

Calculate inflation adjusted prices.

GDP Calculator

Calculate GDP using the expenditure approach — consumption, investment, government spending and net exports.

Tax Calculators26

Advance Tax Calculator

Calculate your advance tax liability and quarterly installments.

Capital Gains Calculator

Calculate short-term and long-term capital gains tax on shares and mutual funds.

GST Calculator

Calculate GST amount for any product or service.

Income Tax Calculator

Calculate your payable income tax.

Salary Calculator

Calculate your net take home salary.

TDS Calculator

Calculate TDS deductions.

HRA Calculator

Calculate House Rent Allowance exemption.

LTCG Tax on Property Calculator

Calculate long-term capital gains tax on property under old and new regimes.

80C Calculator

Calculate deductions under Section 80C and tax saved from EPF, PPF, ELSS, insurance and more.

80D Calculator

Calculate health insurance premium deduction under Section 80D for self and parents.

80DD & 80U Calculator

Calculate disability deduction under Section 80DD for disabled dependents and 80U for self.

80TTA Calculator

Calculate deduction on savings account interest under Section 80TTA and 80TTB for senior citizens.

Leave Encashment Calculator

Calculate the taxable portion of leave encashment received at the time of resignation or retirement.

Income from House Property Calculator

Calculate taxable income from rental property including standard deduction and home loan interest.

Transport Allowance Calculator

Calculate exemption on transport allowance under the old tax regime.

Section 234F Calculator

Calculate late filing fee under Section 234F for delayed ITR submission.

Crypto Tax Calculator

Calculate 30% tax on cryptocurrency and virtual digital asset gains under Section 115BBH.

Holding Period Calculator

Calculate the holding period of an asset to determine STCG or LTCG classification.

Rent Free Accommodation Calculator

Calculate the taxable perquisite value of rent-free accommodation provided by employer.

Children Education Allowance Calculator

Calculate exemption on children education and hostel allowance under Section 10(14).

Indexed Cost of Acquisition Calculator

Calculate indexed cost of acquisition for capital gains using CII.

ITR Eligibility Calculator

Check which ITR form you need to file based on your income and sources.

Medical Facility Calculator

Calculate the taxable value of medical facility provided by your employer, in India or outside India.

Rent Receipt Generator

Generate a printable rent receipt for your HRA claim with tenant, landlord and property details.

Presumptive Income Calculator (Section 44AE)

Calculate presumptive income for goods transport business under Section 44AE of the Income Tax Act.

Partner Remuneration Calculator

Calculate the maximum remuneration deduction allowable to working partners under Section 40(b) of the Income Tax Act.

Deposits Calculators7

FD Calculator

Calculate maturity amount and interest on Fixed Deposits.

RD Calculator

Calculate maturity amount for Recurring Deposits.

PPF Calculator

Calculate returns on Public Provident Fund.

SSY Calculator

Calculate maturity amount for Sukanya Samriddhi Yojana.

NSC Calculator

Calculate returns under National Savings Certificate.

SCSS Calculator

Calculate Senior Citizens Savings Scheme returns.

Post Office MIS Calculator

Calculate Post Office Monthly Income Scheme returns.

Retirement Calculators6

Retirement Planner Calculator

Monte Carlo simulation of your retirement corpus with success rate.

Retirement Calculator

Calculate how much you need for retirement.

NPS Calculator

Calculate returns for National Pension Scheme.

EPF Calculator

Calculate returns for Employee's Provident Fund.

Gratuity Calculator

Calculate gratuity you will get on retirement.

Atal Pension Yojana Calculator

Calculate monthly investments under Atal Pension Yojana.

Health Calculators26

BMI Calculator

Calculate your Body Mass Index and category.

Calorie Calculator

Calculate your daily calorie needs based on age, gender, weight and activity.

BMR Calculator

Calculate your Basal Metabolic Rate and daily calorie needs.

Body Fat Calculator

Estimate your body fat percentage using common measurements.

Ideal Weight Calculator

Calculate your ideal body weight based on height and gender.

TDEE Calculator

Calculate your Total Daily Energy Expenditure and maintenance calories.

Calories Burned Calculator

Estimate calories burned during different activities.

Waist to Hip Ratio Calculator

Calculate your waist-to-hip ratio and health risk category.

Steps to Calories Calculator

Estimate calories burned based on the number of steps walked.

Steps to Km Calculator

Convert the number of steps walked into kilometres.

Pregnancy Due Date Calculator

Calculate your estimated due date and pregnancy milestones.

Macro Calculator

Calculate your daily protein, carbohydrate and fat targets based on your goals.

Lean Body Mass Calculator

Calculate your lean body mass and body fat weight.

Protein Calculator

Calculate your daily protein requirement based on weight and activity level.

Target Heart Rate Calculator

Calculate your target heart rate zones for different exercise intensities.

Ovulation Calculator

Calculate your ovulation date and fertile window based on your cycle.

Period Calculator

Calculate your next period date and cycle predictions.

Carbohydrate Calculator

Calculate your daily carbohydrate needs based on weight and activity.

Healthy Weight Calculator

Calculate a healthy weight range for your height using BMI.

One Rep Max Calculator

Calculate your one rep max and training percentages for weightlifting.

Body Surface Area Calculator

Calculate your body surface area using the Mosteller formula.

Pace Calculator

Calculate running pace, speed and finish time for any distance.

Pregnancy Weight Gain Calculator

Calculate recommended weight gain during pregnancy based on BMI.

Height Calculator

Predict a child's adult height using the mid-parental height method.

GFR Calculator

Estimate glomerular filtration rate (eGFR) using the MDRD formula to assess kidney function.

Bra Size Calculator

Calculate bra band and cup size from underbust and bust measurements in inches.

Other Calculators1005

Age Calculator

Calculate your exact age in years, months and days.

Date Difference Calculator

Calculate the number of days between two dates.

Tip Calculator

Calculate the tip amount and total bill for any service.

Percentage Calculator

Calculate percentages, percentage change and more.

GPA Calculator

Calculate your Grade Point Average from your grades and credits.

Sleep Calculator

Find the best time to sleep or wake up based on sleep cycles.

Time Duration Calculator

Calculate the duration between two times.

Days From Today Calculator

Calculate the date a given number of days from today.

Days Until Calculator

Calculate how many days are left until a target date.

Age Difference Calculator

Calculate the age difference between two people.

Percentage Change Calculator

Calculate the percentage increase or decrease between two values.

Decimal to Fraction Calculator

Convert a decimal number to its simplest fraction form.

Density Calculator

Calculate density, mass or volume of a substance.

Electricity Cost Calculator

Calculate the cost of electricity used by an appliance.

Square Footage Calculator

Calculate the area of a room or space in square feet.

CBM Calculator

Calculate the cubic meters (CBM) of a shipment.

Cubic Feet Calculator

Calculate the volume of a space in cubic feet.

Cubic Yards Calculator

Calculate the volume of a space in cubic yards.

Gravel Calculator

Calculate how much gravel you need for an area.

Mulch Calculator

Calculate how much mulch you need for your garden.

Final Grade Calculator

Calculate the grade you need on your final exam to reach a target.

Mean Median Mode Calculator

Calculate the mean, median, mode and range of a set of numbers.

Standard Deviation Calculator

Calculate the standard deviation and variance of a data set.

Percent Error Calculator

Calculate the percentage error between an observed and expected value.

Ratio Calculator

Simplify ratios and calculate missing ratio values.

Roman Numeral Converter

Convert numbers to Roman numerals and vice versa.

Day of the Week Calculator

Find out which day of the week any date falls on.

Time Card Calculator

Calculate total work hours and pay from clock in and clock out times.

Gas Mileage Calculator

Calculate fuel efficiency in km per litre and cost per kilometre.

Speed Calculator

Calculate speed, distance or time for any journey.

Fraction Calculator

Add, subtract, multiply and divide fractions with step-by-step results.

Triangle Calculator

Calculate the area, perimeter and angles of a triangle.

Quadratic Equation Calculator

Solve quadratic equations and find the roots.

LCM & GCF Calculator

Calculate the Least Common Multiple and Greatest Common Factor of numbers.

Square Root Calculator

Calculate the square root of any number.

Exponent Calculator

Calculate the result of raising a base to an exponent.

Area Calculator

Calculate the area of common shapes like square, rectangle, circle and triangle.

Volume Calculator

Calculate the volume of common 3D shapes like cube, cylinder and sphere.

Million to Crore Converter

Convert millions to crores and crores to millions instantly.

Million to Lakhs Converter

Convert millions to lakhs and lakhs to millions instantly.

Billion to Rupees Converter

Convert billions to rupees and rupees to billions instantly.

Acre to Square Feet Converter

Convert acres to square feet and square feet to acres.

Square Meter to Square Feet Converter

Convert square meters to square feet and square feet to square meters.

Binary Calculator

Add, subtract, multiply and divide binary numbers with decimal conversion.

Hex Calculator

Add, subtract, multiply and divide hexadecimal numbers with decimal conversion.

Log Calculator

Calculate logarithms with any base, natural log and antilog.

Slope Calculator

Calculate slope, angle and equation of a line between two points.

Circle Calculator

Calculate area, circumference, diameter and radius of a circle.

Pythagorean Theorem Calculator

Calculate the missing side of a right triangle using the Pythagorean theorem.

Prime Factorization Calculator

Find the prime factors of any number with exponent form.

Scientific Notation Converter

Convert numbers to and from scientific notation and E-notation.

Rounding Calculator

Round numbers to any decimal place or significant figure.

Average Calculator

Calculate mean, median, mode and range of a data set.

Permutation and Combination Calculator

Calculate nPr and nCr with factorial support.

Probability Calculator

Calculate probability of single and multiple events.

Half-Life Calculator

Calculate half-life, remaining quantity or elapsed time of a decaying substance.

Distance Calculator

Calculate distance between two points in 2D space.

Surface Area Calculator

Calculate surface area of cubes, spheres, cylinders, cones and more.

Hours Calculator

Calculate total hours and minutes between two times or dates.

Concrete Calculator

Calculate concrete volume in cubic yards, feet and meters for slabs and footings.

Roofing Calculator

Calculate roofing area, shingles and cost for your roof.

Tile Calculator

Calculate tiles needed for a floor or wall with waste allowance.

Wind Chill Calculator

Calculate wind chill temperature from air temperature and wind speed.

Heat Index Calculator

Calculate apparent temperature from air temperature and humidity.

Time Zone Converter

Convert time between IST, UTC, US and other major time zones.

Weight Converter

Convert between kilograms, grams, pounds, ounces and tonnes.

Length Converter

Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards and miles.

Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin and Rankine.

Area Converter

Convert between square meters, square feet, acres, hectares and more.

Volume Converter

Convert between liters, milliliters, gallons, cups and more.

Pressure Converter

Convert between pascal, bar, atmosphere, psi and more.

Energy Converter

Convert between joules, calories, kilowatt-hours and BTUs.

Power Converter

Convert between watts, kilowatts, horsepower and BTUs per hour.

Force Converter

Convert between newtons, kilogram-force, pound-force and dynes.

Time Converter

Convert between seconds, minutes, hours, days, weeks and years.

Speed Converter

Convert between meters per second, km/h, mph and knots.

Angle Converter

Convert between degrees, radians, gradians and arcminutes.

Data Storage Converter

Convert between bits, bytes, kilobytes, megabytes, gigabytes and terabytes.

Fuel Consumption Converter

Convert between km per liter, liters per 100km and miles per gallon.

Acceleration Converter

Convert between meters per second squared, g-force and feet per second squared.

Torque Converter

Convert between newton-meters, kilogram-force meters and pound-feet.

Flow Rate Converter

Convert between liters per minute, cubic meters per hour and gallons per minute.

Electric Current Converter

Convert between amperes, milliamperes, microamperes and kiloamperes.

Electric Resistance Converter

Convert between ohms, kiloohms, megaohms and milliohms.

Electric Potential Converter

Convert between volts, millivolts, kilovolts and megavolts.

Capacitance Converter

Convert between farads, microfarads, nanofarads and picofarads.

Frequency Wavelength Converter

Convert between hertz, kilohertz, megahertz and gigahertz with wavelength.

Case Converter

Convert text to uppercase, lowercase, title case and sentence case.

Numbers Converter

Convert numbers between binary, octal, decimal and hexadecimal.

Data Transfer Converter

Convert between bits per second, kilobits, megabits and gigabytes per second.

SI Prefixes Converter

Convert between SI prefixes like kilo, mega, giga, milli and micro.

Volume Dry Converter

Convert between US and UK dry volume units like pecks and bushels.

Angular Velocity Converter

Convert between radians per second, degrees per second and RPM.

Angular Acceleration Converter

Convert between radians per second squared and degrees per second squared.

Density Converter

Convert between kg/m³, g/cm³, kg/L and pounds per cubic foot.

Specific Volume Converter

Convert between m³/kg, cm³/g, L/kg and cubic feet per pound.

Moment of Inertia Converter

Convert between kg·m², g·cm² and pound-foot squared.

Moment of Force Converter

Convert between newton-meters, kilogram-force meters and pound-feet.

Fuel Efficiency Mass Converter

Convert fuel efficiency per mass unit between metric and imperial.

Fuel Efficiency Volume Converter

Convert fuel efficiency per volume unit between metric and imperial.

Temperature Interval Converter

Convert temperature intervals between Celsius, Fahrenheit, Kelvin and Rankine.

Thermal Expansion Converter

Convert coefficient of thermal expansion between 1/K, 1/°C and 1/°F.

Thermal Resistance Converter

Convert thermal resistance between K/W, °C/W and °F·h/BTU.

Thermal Conductivity Converter

Convert thermal conductivity between W/(m·K), kcal/(h·m·°C) and BTU/(h·ft·°F).

Specific Heat Capacity Converter

Convert specific heat capacity between J/(kg·K), cal/(g·°C) and BTU/(lb·°F).

Heat Density Converter

Convert heat density between J/m³, kcal/m³ and BTU/ft³.

Heat Flux Density Converter

Convert heat flux density between W/m², cal/(s·cm²) and BTU/(h·ft²).

Heat Transfer Coefficient Converter

Convert heat transfer coefficient between W/(m²·K), kcal/(h·m²·°C) and BTU/(h·ft²·°F).

Mass Flow Rate Converter

Convert mass flow rate between kg/s, g/s, pounds per second and tonnes per hour.

Molar Flow Rate Converter

Convert molar flow rate between mol/s, kmol/s and kmol/h.

Mass Flux Density Converter

Convert mass flux density between kg/(s·m²), g/(s·cm²) and lb/(h·ft²).

Molar Concentration Converter

Convert molar concentration between mol/L, mmol/L and µmol/L.

Solution Concentration Converter

Convert solution concentration between g/L, mg/L, ppm and ppb.

Dynamic Viscosity Converter

Convert dynamic viscosity between Pa·s, poise, centipoise and lb/(ft·s).

Kinematic Viscosity Converter

Convert kinematic viscosity between m²/s, stokes and centistokes.

Surface Tension Converter

Convert surface tension between N/m, dyn/cm and lbf/ft.

Permeability Converter

Convert permeability between kg/(Pa·s·m²) and perm units.

Luminance Converter

Convert luminance between candela per m², footlambert and lambert.

Luminous Intensity Converter

Convert luminous intensity between candela and candle units.

Illumination Converter

Convert illumination between lux, foot-candle and phot.

Digital Image Resolution Converter

Convert image resolution between pixels per inch, cm and mm.

Electric Charge Converter

Convert electric charge between coulombs, millicoulombs and ampere-hours.

Linear Charge Density Converter

Convert linear charge density between C/m, C/cm and C/inch.

Surface Charge Density Converter

Convert surface charge density between C/m², C/cm² and C/inch².

Volume Charge Density Converter

Convert volume charge density between C/m³, C/cm³ and C/inch³.

Linear Current Density Converter

Convert linear current density between A/m, A/cm and A/inch.

Surface Current Density Converter

Convert surface current density between A/m², A/cm² and A/inch².

Electric Field Strength Converter

Convert electric field strength between V/m, kV/m and V/cm.

Electric Resistivity Converter

Convert electric resistivity between ohm-meters, ohm-cm and microhm-cm.

Electric Conductance Converter

Convert electric conductance between siemens, millisiemens and microsiemens.

Electric Conductivity Converter

Convert electric conductivity between S/m, mS/m and µS/m.

Inductance Converter

Convert inductance between henries, millihenries and microhenries.

Magnetomotive Force Converter

Convert magnetomotive force between ampere-turns and gilberts.

Magnetic Field Strength Converter

Convert magnetic field strength between A/m, oersted and A/cm.

Magnetic Flux Converter

Convert magnetic flux between webers, maxwells and tesla-square meters.

Magnetic Flux Density Converter

Convert magnetic flux density between tesla, gauss and webers per m².

Radiation Converter

Convert radiation dose rate between grays per second, rads and rems.

Radiation Activity Converter

Convert radiation activity between becquerels, curies and rutherfords.

Radiation Exposure Converter

Convert radiation exposure between coulombs per kg and roentgens.

Radiation Absorbed Dose Converter

Convert radiation absorbed dose between grays, rads and sieverts.

Sound Converter

Convert sound levels between bel, decibel and neper.

Typography Converter

Convert typography units between points, picas, pixels and inches.

Lumber Volume Converter

Convert lumber volume between cubic meters, board feet and cords.

BTU Calculator

Calculate the BTU and tonnage needed to cool or heat a room.

Horsepower Calculator

Calculate horsepower and kilowatts from torque and RPM.

Shoe Size Conversion Calculator

Convert US shoe sizes to UK, EU and centimetres for men and women.

Z-score Calculator

Calculate the z-score and percentile for a value given the mean and standard deviation.

Sample Size Calculator

Calculate the required sample size for a survey or study given population size, confidence level and margin of error.

Matrix Calculator

Add, subtract and multiply 2x2 matrices, and find determinants and inverses.

Basic Calculator

A simple calculator for everyday arithmetic - add, subtract, multiply and divide.

Golf Handicap Calculator

Calculate your golf handicap index from recent round scores, course ratings and slope ratings.

Voltage Drop Calculator

Calculate voltage drop in electrical wiring from wire length, current, cross-section and material.

Ohm's Law Calculator

Calculate voltage, current, resistance and power — enter any two values.

Resistor Color Code Calculator

Decode 4-band resistor color codes into resistance value and tolerance.

Dew Point Calculator

Calculate the dew point temperature from air temperature and relative humidity.

Molarity Calculator

Calculate the molarity of a solution from solute mass, molar mass and volume.

Stair Calculator

Calculate the number of steps, riser height and total run for a staircase.

IP Subnet Calculator

Calculate network address, broadcast address, subnet mask and usable hosts for an IPv4 CIDR block.

Bandwidth Calculator

Calculate the bandwidth needed to transfer a file in a given time.

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text.

Password Generator

Generate strong random passwords with custom length and character sets.

Love Calculator

A fun love percentage calculator based on two names.

Dice Roller

Roll one or more dice with custom sides and see the results.

Cooking Converter

Convert between grams, milliliters, cups, tablespoons, teaspoons, ounces and pounds for cooking.

Oven Temperature Converter

Convert oven temperatures between Celsius, Fahrenheit and gas mark.

Flooring Calculator

Calculate how much flooring you need for a room, including extra for waste and cuts.

Lumens to Watts Calculator

Convert brightness (lumens) to power consumption (watts) for LED, CFL, halogen and incandescent bulbs.

Gallons To Liters Calculator

Convert gallons to liters and other volume units instantly.

LBS To KG Converter Calculator

Convert pounds (lbs) to kilograms (kg) and other weight units instantly.

Kilometer To Mile Calculator

Convert kilometers to miles and other length units instantly.

Inch To Centimeter Calculator

Convert inches to centimeters and other length units instantly.

Meter To Feet Calculator

Convert meters to feet and other length units instantly.

Meter To Inch Calculator

Convert meters to inches and other length units instantly.

Meter To Kilometer Calculator

Convert meters to kilometers and other length units instantly.

Meter To Millimeter Calculator

Convert meters to millimeters and other length units instantly.

Centimeter To Millimeter Calculator

Convert centimeters to millimeters and other length units instantly.

Meters To Centimeters Calculator

Convert meters to centimeters and other length units instantly.

Millimeters To Centimeters Calculator

Convert millimeters to centimeters and other length units instantly.

Celsius To Fahrenheit Calculator

Convert Celsius to Fahrenheit and other temperature units instantly.

Celsius To Kelvin Calculator

Convert Celsius to Kelvin and other temperature units instantly.

Fahrenheit To Celsius Calculator

Convert Fahrenheit to Celsius and other temperature units instantly.

Kelvin To Celsius Calculator

Convert Kelvin to Celsius and other temperature units instantly.

Hectare To Acre Calculator

Convert hectares to acres and other area units instantly.

Acre To Square Meter Calculator

Convert acres to square meters and other area units instantly.

Square Foot To Square Meter Calculator

Convert square feet to square meters and other area units instantly.

Cubic Foot To Cubic Meter Calculator

Convert cubic feet to cubic meters and other volume units instantly.

Cubic Foot To Cubic Yard Calculator

Convert cubic feet to cubic yards and other volume units instantly.

Hour To Minute Calculator

Convert hours to minutes and other time units instantly.

Feet To Inches Calculator

Convert feet to inches and other length units instantly.

Feet To Centimeter Calculator

Convert feet to centimeters and other length units instantly.

Inch To Feet Calculator

Convert inches to feet and other length units instantly.

Conversion Calculator

Convert between common length, weight, volume and temperature units.

Height Feet To CM Calculator

Convert height between feet/inches and centimeters instantly.

Feet And Inches Calculator

Add, subtract and convert feet and inches measurements.

401K Calculator

Estimate your 401(k) retirement balance with contributions and growth.

IRA Calculator

Estimate your IRA balance with annual contributions and growth.

Roth IRA Calculator

Estimate your Roth IRA balance with tax-free growth.

RMD Calculator

Calculate Required Minimum Distributions from retirement accounts.

CD Calculator

Calculate Certificate of Deposit maturity value.

Mortgage Calculator

Calculate monthly mortgage payments with interest breakdown.

Financial Mortgage Calculator

Estimate monthly mortgage payments and total interest.

Canadian Mortgage Calculator

Calculate mortgage payments with Canadian semi-annual compounding.

Mortgage UK Calculator

Calculate UK mortgage repayments in pounds sterling.

VA Mortgage Calculator

Estimate VA loan monthly payments with no down payment.

Repayment Calculator

Calculate loan repayments and payoff schedule.

Finance Calculator

Calculate loan payments, future value and simple interest.

Financial Calculator

Compute interest, future value and monthly payments.

Markup Calculator

Calculate selling price and profit from cost and markup percentage.

Profit Calculator

Calculate profit and profit margin from cost and selling price.

VAT Calculator

Add or remove VAT from a price.

Real Estate Calculator

Estimate property investment returns and mortgage payments.

Circumference Calculator

Calculate the circumference of a circle from radius or diameter.

Geometry Calculator

Calculate area and perimeter of common 2D shapes.

Midpoint Calculator

Find the midpoint between two points on a plane.

Polygon Calculator

Calculate the area of a regular polygon.

Rectangle Calculator

Calculate area, perimeter and diagonal of a rectangle.

Squares Calculator

Calculate area, perimeter and diagonal of a square.

Cone Calculator

Calculate the volume and surface area of a cone.

Cylinder Calculator

Calculate the volume and surface area of a cylinder.

Hemisphere Calculator

Calculate the volume and surface area of a hemisphere.

Pyramid Calculator

Calculate the volume of a square pyramid.

Rectangular Prism Calculator

Calculate the volume and surface area of a rectangular prism.

Sphere Calculator

Calculate the volume and surface area of a sphere.

Surface Area Calculator

Calculate the surface area of common 3D shapes.

Triangular Prism Calculator

Calculate the volume of a triangular prism.

Heron's Calculator

Calculate the area of a triangle using Heron's formula.

Perimeter of Polygon Calculator

Calculate the perimeter of a regular polygon.

Rectangle Diagonal Calculator

Calculate the diagonal of a rectangle from length and width.

Tank Volume Calculator

Calculate the volume of a rectangular or cylindrical tank.

CGPA Calculator

Calculate CGPA from semester GPAs or grade points.

Overweight Calculator

Check if your weight is in the overweight range using BMI.

Fitness And Health Calculator

Calculate BMI, BMR and daily calorie needs together.

Bingo Number Generator Calculator

Generate random bingo numbers between 1 and 75.

Lottery Number Generator Calculator

Generate random lottery numbers in a range.

Odds Calculator

Convert between probability, odds for and odds against.

GCD Calculator

Find the greatest common divisor (GCD) of two or more numbers.

HCF Calculator

Find the highest common factor (HCF) of two numbers with steps.

Common Factor Calculator

List all common factors of two numbers.

Factor Calculator

Find all factors of a number instantly.

Factors Calculator

Find all factors and prime factors of any number.

Common Factors Calculator

Find common factors of two numbers quickly.

Multiples Calculator

Generate the first N multiples of a number.

LCD Calculator

Find the least common denominator of two fractions.

MOD Calculator

Calculate the modulo (remainder) of a division.

Modulo Calculator

Compute the remainder of a divided by b.

Remainder Calculator

Find the quotient and remainder of a division.

Multiplication Calculator

Multiply two numbers instantly.

Big Number Calculator

Multiply or add very large numbers with precision.

Math Calculator

Basic arithmetic: add, subtract, multiply and divide two numbers.

Adding And Subtracting Integers Calculator

Add and subtract integers with sign handling.

Multiplying Integers Calculator

Multiply integers with correct sign rules.

Long Division Calculator

Perform long division and get quotient with remainder.

Long Division With Decimals Calculator

Divide numbers and get the decimal result.

Mixed Numbers Calculator

Convert between mixed numbers and improper fractions.

Fractions Calculator

Add, subtract, multiply and divide two fractions.

Equivalent Fractions Calculator

Check if two fractions are equivalent.

Simplify Fractions Calculator

Reduce any fraction to its simplest form.

Comparing Fractions Calculator

Compare two fractions to find which is larger.

Order Fractions Calculator

Order three fractions from least to greatest.

Solve For X In Fractions Calculator

Solve a/b = x/c for the unknown value x.

Greater Than Less Than Calculator

Compare two numbers and see the correct inequality sign.

Least To Greatest Calculator

Sort numbers from smallest to largest.

Expanded Form Calculator

Write a number in expanded form (place value breakdown).

Rounding Numbers Calculator

Round a number to a chosen number of decimal places.

Significant Figures Calculator

Round a number to a specified number of significant figures.

Simplest Form Calculator

Reduce a fraction to its simplest form instantly.

Golden Ratio Calculator

Calculate the golden ratio of a segment or number.

Diamond Problem Solver

Find two numbers given their sum and product (diamond problem).

Number Sequence Calculator

Find the next term of an arithmetic or geometric sequence.

Random Number Generator Calculator

Generate random numbers within a range.

Square Roots Calculator

Calculate the square root of any number.

Cube Roots Calculator

Calculate the cube root of any number.

Perfect Cubes Calculator

Check if a number is a perfect cube and find its cube root.

FOIL Calculator

Expand (ax + b)(cx + d) using the FOIL method.

Dot Product Calculator

Calculate the dot product of two 2D or 3D vectors.

Cross Product Calculator

Calculate the cross product of two 3D vectors.

Discriminant Calculator

Calculate the discriminant of a quadratic equation ax² + bx + c = 0.

Find The Value of X Calculator

Solve linear equations of the form ax + b = c for x.

Equivalent Expressions Calculator

Check if two linear expressions are equivalent.

Combine Like Terms Calculator

Combine like terms of two linear expressions.

Factoring Trinomials Calculator

Factor a quadratic trinomial ax² + bx + c.

Rational Expressions Calculator

Simplify a rational expression (numerator / denominator).

Rationalize The Denominator Calculator

Rationalize a fraction with a square root in the denominator.

Inverse Function Calculator

Find the inverse of a linear function y = ax + b.

Domain And Range Calculator

Find the domain and range of a quadratic function.

Vertex Calculator

Find the vertex of a parabola y = ax² + bx + c.

Tangent Line Calculator

Find the tangent line to a parabola at a given point.

Interpolation Calculator

Linear interpolation between two known points.

Proportion Calculator

Solve proportions of the form a/b = c/d for a missing value.

Log10 Calculator

Calculate the base-10 logarithm of a number.

Factorials Calculator

Calculate the factorial of a number n!.

Fibonacci Calculator

Find the nth Fibonacci number.

Combinations Calculator

Calculate combinations nCr (order does not matter).

Permutations Calculator

Calculate permutations nPr (order matters).

Infinite Series Calculator

Sum of an infinite geometric series.

Infinite Geometric Series Calculator

Sum of an infinite geometric series with steps.

Radius of Convergence Calculator

Find the radius of convergence of a power series using the ratio test.

Polar To Rectangular Calculator

Convert polar coordinates (r, θ) to rectangular (x, y).

Rectangular To Polar Calculator

Convert rectangular coordinates (x, y) to polar (r, θ).

Antiderivative Calculator

Find the antiderivative of a power function axⁿ.

Double Integral Calculator

Numerically integrate a constant function over a rectangular region.

Triple Integral Calculator

Numerically integrate a constant function over a box region.

Eigenvalue Calculator

Find the eigenvalues of a 2×2 matrix.

PH Calculator

Calculate pH from hydrogen ion concentration or vice versa.

BAC Calculator

Estimate blood alcohol concentration from drinks consumed.

Chemical Reaction Calculator

Balance simple chemical equations (A + B → C form).

Displacement Calculator

Calculate displacement using initial velocity, acceleration and time.

Friction Calculator

Calculate friction force from coefficient and normal force.

Impulse Calculator

Calculate impulse from force and time.

Kinetic Energy Calculator

Calculate kinetic energy from mass and velocity.

Momentum Calculator

Calculate momentum from mass and velocity.

PPI Calculator

Calculate pixels per inch of a screen from resolution and size.

P Value Calculator

Calculate the p-value from a z-score for hypothesis testing.

Coin Flipper Calculator

Simulate flipping a coin and see heads/tails counts.

Descriptive Statistics Calculator

Compute mean, median, mode, variance and standard deviation.

Percentile Calculator

Find the percentile rank of a value in a data set.

Quartile Calculator

Calculate Q1, Q2 (median) and Q3 of a data set.

Random Number Generator Calculator

Generate random numbers between 1 and 100.

Random Number Generator 1-10 Calculator

Generate random numbers between 1 and 10.

Random Number Generator 1-100 Calculator

Generate random numbers between 1 and 100.

Statistics Calculator

Compute mean, median, mode, range and standard deviation.

Stem And Leaf Calculator

Build a stem-and-leaf plot from a data set.

Sum Calculator

Add up a list of numbers and get the total.

Variance Calculator

Calculate the variance of a data set.

Decameter To Meter Calculator

Convert decameters to meters and other length units instantly.

Million To Rupees Calculator

Convert millions to rupees, lakhs and crores instantly.

Molality Calculator

Calculate the molality of a solution from moles of solute and mass of solvent.

Normality Calculator

Calculate the normality of a solution from molarity and equivalence factor.

Mole Fraction Calculator

Calculate the mole fraction of a component in a mixture.

Molar Mass Calculator

Calculate the molar mass of a compound from element masses.

Molar Volume Calculator

Calculate the molar volume of a gas at STP or given conditions.

Molar Concentration Calculator

Calculate molar concentration from moles and volume.

Percent Composition Calculator

Calculate the percent composition of an element in a compound.

Grams To Moles Calculator

Convert grams of a substance to moles using molar mass.

Moles To Grams Calculator

Convert moles of a substance to grams using molar mass.

Grams To Atoms Calculator

Convert grams of a substance to number of atoms.

Molecular Weight Calculator

Calculate the molecular weight of a compound from mass and moles.

Atomic Mass Calculator

Calculate the average atomic mass from isotopes and abundances.

Equivalent Weight Calculator

Calculate the equivalent weight of a compound.

Degree Of Unsaturation Calculator

Calculate the degree of unsaturation (DBE) of a molecule.

Ionic Strength Calculator

Calculate the ionic strength of a solution.

Dilution Calculator

Calculate the volume needed to dilute a solution to a target concentration.

Henderson-Hasselbalch Calculator

Calculate the pH of a buffer solution using the Henderson-Hasselbalch equation.

Arrhenius Equation Calculator

Calculate the rate constant using the Arrhenius equation.

Activation Energy Calculator

Calculate the activation energy of a reaction from rate constants.

Gibbs Free Energy Calculator

Calculate the Gibbs free energy change of a reaction.

Enthalpy Calculator

Calculate the enthalpy change of a reaction.

Entropy Calculator

Calculate the entropy change of a system.

Equilibrium Constant Calculator

Calculate the equilibrium constant from concentrations.

Beer-Lambert Law Calculator

Calculate absorbance using the Beer-Lambert law.

Nernst Equation Calculator

Calculate the cell potential using the Nernst equation.

Ideal Gas Law Calculator

Calculate pressure, volume, moles or temperature using PV = nRT.

Boyle's Law Calculator

Calculate the final pressure or volume using Boyle's law.

Charles's Law Calculator

Calculate the final volume or temperature using Charles's law.

Gay-Lussac's Law Calculator

Calculate the final pressure or temperature using Gay-Lussac's law.

Combined Gas Law Calculator

Calculate the final state of a gas using the combined gas law.

Partial Pressure Calculator

Calculate the partial pressure of a gas in a mixture.

Vapor Pressure Calculator

Calculate the vapor pressure of a solution using Raoult's law.

Boiling Point Calculator

Calculate the boiling point elevation of a solution.

Water Density Calculator

Calculate the density of water at a given temperature.

Oxidation Number Calculator

Calculate the oxidation number of an element in a compound.

Stoichiometry Calculator

Calculate the amount of product from a given amount of reactant.

Theoretical Yield Calculator

Calculate the theoretical yield of a reaction.

Empirical Formula Calculator

Calculate the empirical formula from mass percentages.

Clausius-Clapeyron Equation Calculator

Calculate vapor pressure at a new temperature using the Clausius-Clapeyron equation.

Isoelectric Point Calculator

Calculate the isoelectric point (pI) of an amino acid.

Van Der Waals Equation Calculator

Calculate pressure using the Van der Waals equation for real gases.

Vapor Pressure Of Water Calculator

Calculate the vapor pressure of water at a given temperature.

Redox Reaction Calculator

Determine if a reaction is a redox reaction from oxidation states.

Chemical Equation Calculator

Balance a simple chemical equation A + B → C.

Balancing Chemical Equations Calculator

Balance a simple chemical equation of the form A + B → C.

Molar Mass Of A Gas Calculator

Calculate the molar mass of a gas using the ideal gas law.

Decameter To Centimeter Calculator

Convert decameters to centimeters and other length units instantly.

Decameter To Decimeter Calculator

Convert decameters to decimeters and other length units instantly.

Decameter To Feet Calculator

Convert decameters to feet and other length units instantly.

Decameter To Inches Calculator

Convert decameters to inches and other length units instantly.

Decameter To Kilometer Calculator

Convert decameters to kilometers and other length units instantly.

Decameter To Millimeter Calculator

Convert decameters to millimeters and other length units instantly.

Decameter To Statute Miles Calculator

Convert decameters to statute miles and other length units instantly.

Cubic Foot To Cubic Inch Calculator

Convert cubic feet to cubic inches and other volume units instantly.

Cubic Foot To Gallon Calculator

Convert cubic feet to gallons and other volume units instantly.

Cubic Foot To Liter Calculator

Convert cubic feet to liters and other volume units instantly.

Cubic Foot To Milliliter Calculator

Convert cubic feet to milliliters and other volume units instantly.

Cubic Foot To Pint Calculator

Convert cubic feet to pints and other volume units instantly.

Cubic Foot To Quart Calculator

Convert cubic feet to quarts and other volume units instantly.

Cubic Foot To Dry Gallon Calculator

Convert cubic feet to dry gallons and other volume units instantly.

Cubic Foot To Dry Pint Calculator

Convert cubic feet to dry pints and other volume units instantly.

Cubic Inch To Liter Calculator

Convert cubic inches to liters and other volume units instantly.

Cubic Inch To Imperial Gallon Calculator

Convert cubic inches to imperial gallons and other volume units instantly.

Cubic Inch To Imperial Pint Calculator

Convert cubic inches to imperial pints and other volume units instantly.

Square Foot To Acre Calculator

Convert square feet to acres and other area units instantly.

Square Meter To Acre Calculator

Convert square meters to acres and other area units instantly.

Square Mile To Acre Calculator

Convert square miles to acres and other area units instantly.

Square Mile To Are Calculator

Convert square miles to ares and other area units instantly.

Square Mile To Hectare Calculator

Convert square miles to hectares and other area units instantly.

Square Mile To Square Kilometer Calculator

Convert square miles to square kilometers and other area units instantly.

Square Mile To Square Meter Calculator

Convert square miles to square meters and other area units instantly.

Meter To Mile Calculator

Convert meters to miles and other length units instantly.

Meters To Yards Calculator

Convert meters to yards and other length units instantly.

Inch To Yard Calculator

Convert inches to yards and other length units instantly.

CM To KM Calculator

Convert centimeters to kilometers and other length units instantly.

Convert MM To Inches Calculator

Convert millimeters to inches and other length units instantly.

Centimeter To Meter Calculator

Convert centimeters to meters and other length units instantly.

Acre To Hectare Calculator

Convert acres to hectares and other area units instantly.

Degrees To Radians Calculator

Convert degrees to radians and back instantly.

Radians To Degrees Calculator

Convert radians to degrees and back instantly.

Area Of A Circle Calculator

Calculate the area of a circle from its radius or diameter.

Area Of A Rectangle Calculator

Calculate the area of a rectangle from length and width.

Area Of A Square Calculator

Calculate the area of a square from its side length.

Area Of A Triangle Calculator

Calculate the area of a triangle from base and height.

Area Of A Parallelogram Calculator

Calculate the area of a parallelogram from base and height.

Area Of A Trapezoid Calculator

Calculate the area of a trapezoid from its bases and height.

Area Of A Rhombus Calculator

Calculate the area of a rhombus from diagonals or base and height.

Area Of A Kite Calculator

Calculate the area of a kite from its diagonals.

Area Of A Hexagon Calculator

Calculate the area of a regular hexagon from its side length.

Area Of An Octagon Calculator

Calculate the area of a regular octagon from its side length.

Area Of A Pentagon Calculator

Calculate the area of a regular pentagon from its side length.

Area Of An Ellipse Calculator

Calculate the area of an ellipse from its semi-axes.

Area Of A Sector Calculator

Calculate the area of a circle sector from radius and angle.

Area Of Equilateral Triangle Calculator

Calculate the area of an equilateral triangle from its side.

Area Of Regular Polygon Calculator

Calculate the area of any regular polygon from sides and side length.

Perimeter Of A Rectangle Calculator

Calculate the perimeter of a rectangle from length and width.

Perimeter Of A Square Calculator

Calculate the perimeter of a square from its side length.

Perimeter Of A Triangle Calculator

Calculate the perimeter of a triangle from its three sides.

Perimeter Of A Parallelogram Calculator

Calculate the perimeter of a parallelogram from its sides.

Perimeter Of A Rhombus Calculator

Calculate the perimeter of a rhombus from its side length.

Perimeter Of A Trapezoid Calculator

Calculate the perimeter of a trapezoid from its four sides.

Perimeter Of An Ellipse Calculator

Calculate the approximate perimeter of an ellipse.

Perimeter Of Regular N Polygon Calculator

Calculate the perimeter of a regular polygon from sides and side length.

Volume Of A Cube Calculator

Calculate the volume of a cube from its side length.

Volume Of A Cylinder Calculator

Calculate the volume of a cylinder from radius and height.

Volume Of A Cone Calculator

Calculate the volume of a cone from radius and height.

Volume Of A Sphere Calculator

Calculate the volume of a sphere from its radius.

Volume Of A Rectangular Prism Calculator

Calculate the volume of a rectangular prism (box) from its dimensions.

Volume Of A Square Pyramid Calculator

Calculate the volume of a square pyramid from base side and height.

Volume Of A Triangular Prism Calculator

Calculate the volume of a triangular prism from base triangle and length.

Volume Of A Triangular Pyramid Calculator

Calculate the volume of a triangular pyramid (tetrahedron).

Volume Of A Torus Calculator

Calculate the volume of a torus from major and minor radii.

Volume Of Cuboid Calculator

Calculate the volume of a cuboid from length, width and height.

Surface Area Of A Cube Calculator

Calculate the surface area of a cube from its side length.

Surface Area Of A Cylinder Calculator

Calculate the surface area of a cylinder from radius and height.

Surface Area Of A Cone Calculator

Calculate the surface area of a cone from radius and height.

Surface Area Of A Sphere Calculator

Calculate the surface area of a sphere from its radius.

Surface Area Of A Rectangular Prism Calculator

Calculate the surface area of a rectangular prism from its dimensions.

Surface Area Of A Square Pyramid Calculator

Calculate the surface area of a square pyramid from base side and height.

Surface Area Of A Triangular Prism Calculator

Calculate the surface area of a triangular prism.

Surface Area Of A Triangular Pyramid Calculator

Calculate the surface area of a regular triangular pyramid.

Pythagorean Theorem Calculator

Calculate the missing side of a right triangle using the Pythagorean theorem.

Pythagorean Triples Calculator

Generate Pythagorean triples from a given number.

Heron's Formula Calculator

Calculate the area of a triangle using Heron's formula from three sides.

Law Of Sines Calculator

Calculate the missing side of a triangle using the law of sines.

Law Of Cosines Calculator

Calculate the missing side of a triangle using the law of cosines.

Right Triangle Calculator

Calculate sides, angles and area of a right triangle.

Isosceles Triangle Calculator

Calculate the area and height of an isosceles triangle.

Equilateral Triangle Calculator

Calculate the area, height and perimeter of an equilateral triangle.

Oblique Triangle Calculator

Calculate the area of an oblique triangle from two sides and included angle.

Obtuse Triangle Calculator

Check if a triangle is obtuse and calculate its area.

Side Angle Side Calculator

Solve a triangle given two sides and the included angle (SAS).

Isosceles Trapezoid Calculator

Calculate the area and perimeter of an isosceles trapezoid.

Regular Polygon Calculator

Calculate area, perimeter and angles of a regular polygon.

Interior Angles Of Polygon Calculator

Calculate the sum of interior angles of a polygon.

Square Diagonal Calculator

Calculate the diagonal of a square from its side length.

Arc Length Calculator

Calculate the arc length of a circle from radius and angle.

Chord Of A Circle Calculator

Calculate the chord length of a circle from radius and angle.

Diameter Calculator

Calculate the diameter of a circle from radius, area or circumference.

Radius Calculator

Calculate the radius of a circle from diameter, area or circumference.

Square Calculator

Calculate area, perimeter and diagonal of a square.

Rectangle Calculator

Calculate area, perimeter and diagonal of a rectangle.

Parallelogram Calculator

Calculate the area of a parallelogram from base and height.

Hexagon Calculator

Calculate the area and perimeter of a regular hexagon.

Octagon Calculator

Calculate the area and perimeter of a regular octagon.

Ellipse Calculator

Calculate the area and perimeter of an ellipse.

Hemisphere Calculator

Calculate the volume and surface area of a hemisphere.

Semicircle Calculator

Calculate the area and perimeter of a semicircle.

Pyramid Calculator

Calculate the volume of a square pyramid from base side and height.

Torus Calculator

Calculate the volume and surface area of a torus.

Ellipsoid Volume Calculator

Calculate the volume of an ellipsoid from its three semi-axes.

Midpoint Calculator

Find the midpoint between two points in a plane.

Centroid Calculator

Calculate the centroid of a triangle from its vertices.

Circumcenter Calculator

Calculate the circumcenter of a triangle from its vertices.

Orthocenter Calculator

Calculate the orthocenter of a triangle from its vertices.

Angle Between Two Vectors Calculator

Calculate the angle between two vectors in 2D space.

Dot Product Calculator

Calculate the dot product of two vectors in 2D space.

Vector Addition Calculator

Add two vectors in 2D space.

Vector Subtraction Calculator

Subtract two vectors in 2D space.

Unit Vector Calculator

Calculate the unit vector of a given vector in 2D space.

Resultant Vector Calculator

Calculate the resultant of two vectors with magnitudes and angle.

Quadratic Equation Calculator

Solve a quadratic equation ax² + bx + c = 0 and find its roots.

2nd Degree Equation Calculator

Solve a second degree equation ax² + bx + c = 0.

FOIL Calculator

Multiply two binomials using the FOIL method.

Binomial Expansion Calculator

Expand (a + b)ⁿ using the binomial theorem.

Simplify Square Roots Calculator

Simplify a square root into the form a√b.

Exponents Calculator

Calculate the value of a number raised to a power.

Negative Exponents Calculator

Calculate the value of a number raised to a negative power.

Logarithm Calculator

Calculate the logarithm of a number in any base.

Natural Log Calculator

Calculate the natural logarithm (ln) of a number.

Arithmetic Sequence Calculator

Calculate the nth term and sum of an arithmetic sequence.

Geometric Sequence Calculator

Calculate the nth term and sum of a geometric sequence.

Fibonacci Calculator

Calculate the nth Fibonacci number.

N Choose K Calculator

Calculate the number of combinations C(n, k).

Permutation Calculator

Calculate the number of permutations P(n, r).

Permutation And Combination Calculator

Calculate both permutations and combinations for given n and r.

Determinant Calculator

Calculate the determinant of a 2x2 matrix.

Simultaneous Equations Calculator

Solve two simultaneous linear equations in two variables.

System Of Equations Calculator

Solve a system of two linear equations.

Slope Intercept Form Calculator

Find the slope-intercept form y = mx + b from two points.

Point Slope Form Calculator

Find the point-slope form of a line from a point and slope.

Equation Of A Line From Two Points Calculator

Find the equation of a line passing through two points.

X And Y Intercept Calculator

Find the x and y intercepts of a line y = mx + b.

Derivative Calculator

Calculate the derivative of a polynomial term axⁿ.

Second Derivative Calculator

Calculate the second derivative of a polynomial term axⁿ.

Limit Calculator

Evaluate the limit of a polynomial function as x approaches a value.

Reference Angle Calculator

Calculate the reference angle for any given angle.

Sine Calculator

Calculate the sine of an angle in degrees or radians.

Cosine Calculator

Calculate the cosine of an angle in degrees or radians.

Tangent Calculator

Calculate the tangent of an angle in degrees or radians.

Arctan Calculator

Calculate the inverse tangent (arctan) of a value.

Octal Calculator

Convert between decimal and octal number systems.

Base 5 Calculator

Convert between decimal and base-5 number systems.

Base 9 Calculator

Convert between decimal and base-9 number systems.

Decimal To Binary Converter Calculator

Convert a decimal number to binary.

Decimal To Hex Converter Calculator

Convert a decimal number to hexadecimal.

Binary To Decimal Converter Calculator

Convert a binary number to decimal.

Binary To Hex Converter Calculator

Convert a binary number to hexadecimal.

Rounding Decimals Calculator

Round a decimal number to a specified number of places.

Comparing Fractions Calculator

Compare two fractions and determine which is larger.

Equivalent Fractions Calculator

Find equivalent fractions for a given fraction.

Improper Fraction To Mixed Number Calculator

Convert an improper fraction to a mixed number.

Mixed Fraction To Improper Fraction Calculator

Convert a mixed number to an improper fraction.

Mixed Number To Decimal Calculator

Convert a mixed number to a decimal.

Fraction To Percent Calculator

Convert a fraction to a percentage.

Decimal To Percent Calculator

Convert a decimal to a percentage.

Ratio To Fraction Calculator

Convert a ratio to a fraction.

Ratio To Percent Calculator

Convert a ratio to a percentage.

Reciprocal Of A Fraction Calculator

Find the reciprocal of a fraction.

Reducing Fractions Calculator

Reduce a fraction to its simplest form.

Least Common Denominator Calculator

Find the least common denominator of two fractions.

Adding Fractions Calculator

Add two fractions and get the result in simplest form.

Subtracting Fractions Calculator

Subtract two fractions and get the result in simplest form.

Multiplying Fractions Calculator

Multiply two fractions and get the result in simplest form.

Dividing Fractions Calculator

Divide two fractions and get the result in simplest form.

Adding Complex Numbers Calculator

Add two complex numbers (a + bi) + (c + di).

Complex Number Calculator

Perform basic operations on complex numbers.

Absolute Value Calculator

Calculate the absolute value of a number.

Prime Number Calculator

Check if a number is prime and find nearby primes.

Prime Factors Calculator

Find the prime factorization of a number.

Perfect Number Calculator

Check if a number is a perfect number.

Perfect Square Calculator

Check if a number is a perfect square.

Palindrome Checker Calculator

Check if a number is a palindrome.

Nth Root Calculator

Calculate the nth root of a number.

Cube Root Calculator

Calculate the cube root of a number.

Multiplication Tables Calculator

Generate the multiplication table of a number.

Cross Multiplication Calculator

Solve for x in the proportion a/b = c/x.

Unit Rate Calculator

Calculate the unit rate from quantity and cost.

Summation Calculator

Calculate the sum of integers from a to b.

Order Of Operations Calculator

Evaluate an expression following the order of operations (BODMAS).

Distributive Property Calculator

Apply the distributive property a(b + c) = ab + ac.

Interval Notation Calculator

Convert between interval notation and inequality notation.

Pi Calculator

Calculate the circumference and area of a circle using pi.

Place Value Calculator

Find the place value of a digit in a number.

Expanded Form Calculator

Write a number in expanded form.

Standard Form Calculator

Convert a number to standard form (scientific notation).

Rounding To The Nearest Tenth Calculator

Round a number to the nearest tenth.

Rounding To The Nearest Hundredth Calculator

Round a number to the nearest hundredth.

Rounding To The Nearest Thousandth Calculator

Round a number to the nearest thousandth.

Greater Than Calculator

Compare two numbers and determine which is greater.

Ordering Fractions Calculator

Order three fractions from smallest to largest.

Simplifying Ratios Calculator

Simplify a ratio to its simplest form.

Fraction Exponents Calculator

Calculate a number raised to a fractional power.

Radical Calculator

Calculate the value of a radical expression.

Rational Or Irrational Calculator

Determine if a number is rational or irrational.

Integer Calculator

Perform basic arithmetic on integers.

Whole Number Calculator

Perform basic arithmetic on whole numbers.

Negative Number Calculator

Perform arithmetic operations with negative numbers.

Additive Inverse Calculator

Find the additive inverse of a number.

Multiplicative Inverse Calculator

Find the multiplicative inverse (reciprocal) of a number.

Consecutive Integers Calculator

Find consecutive integers that sum to a given value.

Factor Tree Calculator

Find the prime factorization of a number.

Square Root Equation Calculator

Solve a simple square root equation √x = a.

Square Root Property Calculator

Solve x² = a using the square root property.

Roots Calculator

Calculate the square, cube and nth roots of a number.

4th Root Calculator

Calculate the fourth root of a number.

5th Root Calculator

Calculate the fifth root of a number.

Addition Calculator

Add two numbers together.

Subtraction Calculator

Subtract one number from another.

Multiplication Calculator

Multiply two numbers together.

Division Calculator

Divide one number by another.

Long Division Calculator

Perform long division and show quotient and remainder.

Adding Decimals Calculator

Add two decimal numbers.

Subtracting Decimals Calculator

Subtract two decimal numbers.

Multiplying Decimals Calculator

Multiply two decimal numbers.

Dividing Decimals Calculator

Divide two decimal numbers.

Adding Integers Calculator

Add two integers.

Subtracting Integers Calculator

Subtract two integers.

Multiplying Exponents Calculator

Multiply numbers with exponents: aᵐ × aⁿ = aᵐ⁺ⁿ.

Dividing Exponents Calculator

Divide numbers with exponents: aᵐ ÷ aⁿ = aᵐ⁻ⁿ.

Adding Exponents Calculator

Add two numbers with the same base and exponent.

Scientific Notation For Fractional Numbers Calculator

Convert a fractional number to scientific notation.

Decimal Notation Calculator

Convert scientific notation to decimal notation.

Decimal Place Value Calculator

Find the place value of a digit in a decimal number.

Fractional Notation Calculator

Convert a decimal to fractional notation.

Numerator And Denominator Calculator

Identify the numerator and denominator of a fraction.

Like Fractions Calculator

Check if two fractions are like fractions (same denominator).

Unlike Fractions Calculator

Check if two fractions are unlike fractions (different denominators).

Improper Fraction Calculator

Check if a fraction is improper and convert it to a mixed number.

Mixed Fraction Calculator

Convert a mixed fraction to an improper fraction.

Simplifying Fractions Calculator

Simplify a fraction to its lowest terms.

Simplify Fractions Calculator

Simplify a fraction to its lowest terms.

Fraction Simplifying Calculator

Simplify a fraction to its lowest terms.

Fraction Square Root Calculator

Calculate the square root of a fraction.

Adding Mixed Fractions Calculator

Add two mixed fractions.

Subtracting Mixed Fractions Calculator

Subtract two mixed fractions.

Multiplying Mixed Fractions Calculator

Multiply two mixed fractions.

Dividing Mixed Fractions Calculator

Divide two mixed fractions.

Adding 3 Fractions Calculator

Add three fractions together.

Multiplying 3 Fractions Calculator

Multiply three fractions together.

Comparing Decimals Calculator

Compare two decimal numbers.

Greater Than Less Than Fraction Calculator

Compare two fractions using greater than or less than.

Equivalent Ratio Calculator

Find equivalent ratios for a given ratio.

Direct Variation Calculator

Solve direct variation problems y = kx.

Linear Equations Calculator

Solve a linear equation ax + b = c.

Two Step Equations Calculator

Solve a two-step equation ax + b = c.

Multi Step Equation Calculator

Solve a multi-step linear equation.

Solve For X Calculator

Solve a linear equation for x.

Solve For Y Calculator

Solve a linear equation for y.

Find The Value Of X Calculator

Find the value of x in a linear equation.

Inequality Calculator

Solve a linear inequality ax + b > c.

Compound Inequality Calculator

Solve a compound inequality a < x < b.

Linear Inequalities Calculator

Solve a linear inequality ax + b ≤ c.

Exponential Equation Calculator

Solve an exponential equation aˣ = b.

Exponential Function Calculator

Evaluate an exponential function a·bˣ.

Linear Function Calculator

Evaluate a linear function f(x) = mx + b.

Quadratic Function Calculator

Evaluate a quadratic function f(x) = ax² + bx + c.

Quadratic Factoring Calculator

Factor a quadratic expression ax² + bx + c.

Completing The Square Calculator

Complete the square for a quadratic expression.

Difference Of Squares Calculator

Factor a difference of squares a² − b².

Difference Of Cubes Calculator

Factor a difference of cubes a³ − b³.

Perfect Square Trinomial Calculator

Check if a trinomial is a perfect square and factor it.

Rationalize The Denominator Calculator

Rationalize the denominator of a fraction with a square root.

Simplifying Radicals Calculator

Simplify a radical expression.

Simplifying Radical Expressions Calculator

Simplify a radical expression √n.

Radical Equations Calculator

Solve a simple radical equation √x = a.

Rational Exponents Calculator

Evaluate an expression with rational exponents.

Fractions With Exponents Calculator

Evaluate a fraction raised to a power.

Factoring Polynomials Calculator

Factor a quadratic polynomial ax² + bx + c.

Factor By Grouping Calculator

Factor a polynomial by grouping terms.

Multiplying Polynomials Calculator

Multiply two binomials (ax + b)(cx + d).

Dividing Polynomials Calculator

Divide a polynomial by a monomial.

Polynomial Calculator

Evaluate a polynomial ax² + bx + c at a given x.

Polynomial Equation Solver Calculator

Solve a quadratic polynomial equation ax² + bx + c = 0.

Cubic Equation Solver Calculator

Solve a cubic equation ax³ + bx² + cx + d = 0 (find one real root).

Matrix Addition Calculator

Add two 2x2 matrices.

Matrix Multiplication Calculator

Multiply two 2x2 matrices.

Inverse Matrix Calculator

Calculate the inverse of a 2x2 matrix.

Transpose Matrix Calculator

Calculate the transpose of a 2x2 matrix.

Augmented Matrix Calculator

Solve a system of equations using an augmented matrix (2x3).

Diagonal Matrix Calculator

Check if a 2x2 matrix is diagonal.

Equality Of Matrices Calculator

Check if two 2x2 matrices are equal.

Cramer's Rule Calculator

Solve a system of two equations using Cramer's rule.

Gauss Jordan Elimination Calculator

Solve a system of two equations using Gauss-Jordan elimination.

Substitution Method Calculator

Solve a system of equations using the substitution method.

Elimination Method Calculator

Solve a system of equations using the elimination method.

Linear Equations In Two Variables Calculator

Solve two linear equations in two variables.

Point Of Intersection Calculator

Find the intersection point of two lines.

Parallel Line Calculator

Find the equation of a line parallel to a given line.

Perpendicular Line Calculator

Find the equation of a line perpendicular to a given line.

Equation Of A Line Calculator

Find the equation of a line from slope and a point.

X Intercept Calculator

Find the x-intercept of a line y = mx + b.

Y Intercept Calculator

Find the y-intercept of a line y = mx + b.

Average Rate Of Change Calculator

Calculate the average rate of change of a function between two points.

Rate Of Change Calculator

Calculate the rate of change between two points.

Instantaneous Rate Of Change Calculator

Calculate the instantaneous rate of change of ax² at a point.

Difference Quotient Calculator

Calculate the difference quotient of a function.

Chain Rule Calculator

Apply the chain rule to (ax + b)ⁿ.

Product Rule Calculator

Apply the product rule to xᵐ × xⁿ.

Quotient Rule Calculator

Apply the quotient rule to xᵐ / xⁿ.

Definite Integral Calculator

Evaluate the definite integral of axⁿ from a to b.

Indefinite Integral Calculator

Find the indefinite integral of axⁿ.

Integral Calculator

Evaluate the integral of axⁿ over an interval.

Improper Integral Calculator

Evaluate the improper integral of axⁿ from a to infinity.

Riemann Sum Calculator

Approximate the integral of ax² using a Riemann sum.

Trapezoid Rule Calculator

Approximate the integral of ax² using the trapezoid rule.

Taylor Series Calculator

Approximate eˣ using a Taylor series with n terms.

Maclaurin Series Calculator

Approximate sin(x) using a Maclaurin series.

Power Series Calculator

Evaluate a power series Σ a·xⁿ.

Laplace Transform Calculator

Calculate the Laplace transform of common functions.

Differential Equation Calculator

Solve a simple differential equation dy/dx = ax.

Second Order Differential Equation Solver Calculator

Solve y'' + by' + cy = 0 for simple cases.

Newton's Method Calculator

Find a root of a cubic equation using Newton's method.

Lagrange Interpolation Calculator

Interpolate a value using Lagrange interpolation with two points.

Gamma Function Calculator

Calculate the gamma function Γ(x) for positive x.

Error Function Calculator

Calculate the error function erf(x).

Unit Circle Calculator

Calculate sin, cos and tan for angles on the unit circle.

Coterminal Angle Calculator

Find coterminal angles for a given angle.

Complementary Angle Calculator

Find the complementary angle of a given angle.

Supplementary Angle Calculator

Find the supplementary angle of a given angle.

Obtuse Angle Calculator

Check if an angle is obtuse.

Right Angle Calculator

Check if three sides form a right angle (Pythagorean check).

Trigonometric Ratios Calculator

Calculate all six trigonometric ratios of an angle.

Trigonometry Calculator

Calculate trigonometric functions of an angle.

Trig Function Calculator

Evaluate trigonometric functions of an angle.

Inverse Trig Functions Calculator

Calculate inverse trigonometric functions.

Inverse Cotangent Calculator

Calculate the inverse cotangent of a value.

Sinusoidal Function Calculator

Evaluate a sinusoidal function A·sin(Bx + C) + D.

Step Function Calculator

Evaluate the Heaviside step function.

Function Calculator

Evaluate a linear function f(x) = ax + b.

Table Of Values Of A Function Calculator

Generate a table of values for a linear function.

Boolean Algebra Calculator

Evaluate basic boolean operations.

Truth Table Generator Calculator

Generate a truth table for two boolean inputs.

Union Of Sets Calculator

Calculate the union of two sets.

Linear Combination Calculator

Calculate a linear combination of two vectors.

Ordered Pairs Calculator

Calculate the distance and midpoint between two ordered pairs.

Cartesian Coordinates Calculator

Convert between Cartesian and polar coordinates.

Parabola Calculator

Calculate the vertex and focus of a parabola y = ax² + bx + c.

Parabola Graph Calculator

Find key features of a parabola for graphing.

Hyperbola Calculator

Calculate key features of a hyperbola.

Equation Of A Circle Calculator

Find the equation of a circle from center and radius.

Circle Graphing Calculator

Find the center and radius of a circle from its equation.

Asymptote Calculator

Find the vertical asymptote of a rational function.

Slant Asymptote Calculator

Find the slant asymptote of a rational function.

Inflection Point Calculator

Find the inflection point of a cubic function.

Mean Value Theorem Calculator

Verify the mean value theorem for a quadratic function.

Area Between Two Curves Calculator

Calculate the area between two linear functions.

Area Under The Curve Calculator

Calculate the area under a quadratic curve using integration.

Find Arc Length Calculator

Calculate the arc length of a circle from radius and angle.

Transformations Calculator

Apply a translation to a point.

Sequence Calculator

Calculate the nth term of an arithmetic sequence.

Series Calculator

Calculate the sum of an arithmetic series.

Arithmetic Mean Calculator

Calculate the arithmetic mean of a set of numbers.

Natural Numbers Addition Calculator

Calculate the sum of the first n natural numbers.

Sums Of 10 Calculator

Find pairs of numbers that sum to 10.

Estimate The Difference Calculator

Estimate the difference between two numbers by rounding.

Fraction To Decimal Calculator

Convert a fraction to a decimal.

Percentage Increase Calculator

Calculate the percentage increase between two values.

Percentage Decrease Calculator

Calculate the percentage decrease between two values.

Percentage Difference Calculator

Calculate the percentage difference between two values.

Percentage Off Calculator

Calculate the final price after a percentage discount.

Basis Point Calculator

Convert between basis points and percentages.

Revenue Calculator

Calculate total revenue from price and quantity sold.

Loan Calculator

Calculate monthly payments and total interest for a loan.

Monthly Compound Interest Calculator

Calculate compound interest compounded monthly.

Daily Compound Interest Calculator

Calculate compound interest compounded daily.

Semester Grade Calculator

Calculate your semester grade from weighted components.

2 Digit Number Addition Calculator

Add two 2-digit numbers.

3 Digit Number Addition Calculator

Add two 3-digit numbers.

4 Digit Number Addition Calculator

Add two 4-digit numbers.

Adding One Digit Numbers Calculator

Add two single-digit numbers.

Adding Negative Numbers Calculator

Add numbers that may be negative.

Adding Money Calculator

Add two amounts of money.

Subtracting Money Calculator

Subtract one amount of money from another.

Adding Percentage Calculator

Add a percentage to a number.

Adding Radicals Calculator

Add two square roots.

Adding Square Roots Calculator

Add two square roots.

Multiplying Square Roots Calculator

Multiply two square roots.

Dividing Radicals Calculator

Divide two square roots.

Multiplying Binomials Calculator

Multiply two binomials using FOIL.

Multiplying Monomials Calculator

Multiply two monomials axᵐ × bxⁿ.

Dividing Monomials Calculator

Divide two monomials axᵐ ÷ bxⁿ.

Adding And Subtracting Polynomials Calculator

Add or subtract two quadratic polynomials.

Multiplying Fractions With Whole Numbers Calculator

Multiply a fraction by a whole number.

Adding Complex Fractions Calculator

Add two complex fractions (fractions of fractions).

Complex Fractions Calculator

Simplify a complex fraction (a/b) ÷ (c/d).

Dividing Complex Numbers Calculator

Divide two complex numbers (a+bi) ÷ (c+di).

Imaginary Number Calculator

Calculate powers of the imaginary unit i.

De Moivre's Theorem Calculator

Calculate (cos θ + i sin θ)ⁿ using De Moivre's theorem.

Absolute Value Equations Calculator

Solve an absolute value equation |ax + b| = c.

Multiplication Single Digit Calculator

Multiply two single-digit numbers.

Monomial Calculator

Evaluate a monomial axⁿ at a given x.

Rational Functions Calculator

Evaluate a rational function (ax + b)/(cx + d).

Rational Inequalities Calculator

Solve a rational inequality (ax+b)/(cx+d) > 0.

Simplifying Expressions Calculator

Simplify a linear expression ax + b + cx + d.

Adding And Subtracting Rational Expressions Calculator

Add two rational expressions a/b + c/d.

Multiplying And Dividing Rational Expressions Calculator

Multiply two rational expressions (a/b) × (c/d).

Linear Approximation Calculator

Approximate f(x) = x² near a point using linear approximation.

Instantaneous Velocity Calculator

Calculate instantaneous velocity of s = at² at time t.

Kinematic Calculator

Calculate final velocity using v = u + at.

Dimensional Analysis Calculator

Convert units using dimensional analysis.

Variable Calculator

Solve for a variable in a simple equation.

Solving Equations With Variables On Both Sides Calculator

Solve ax + b = cx + d for x.

Linear Programming Calculator

Evaluate an objective function at a corner point.

Graphing Linear Equations Calculator

Find key points for graphing a linear equation y = mx + b.

Graphing Linear Inequalities Calculator

Find the boundary line for a linear inequality.

Graphing Equations Calculator

Find key features of a linear equation for graphing.

Graphing Functions Calculator

Find key features of a quadratic function for graphing.

Graphing Inequalities Calculator

Find the boundary of a linear inequality.

Graphing Inequality Calculator

Find the boundary line of an inequality.

Line Graph Calculator

Calculate the slope and equation of a line from two points.

Histogram Calculator

Calculate frequency distribution statistics for histogram data.

Bar Graphs Calculator

Calculate statistics for bar graph data.

Pie Chart Calculator

Calculate the angle for each category in a pie chart.

Frequency Distribution Calculator

Calculate statistics for a frequency distribution.

Box And Whisker Plot Calculator

Calculate the five-number summary for a box plot.

Mean Deviation Calculator

Calculate the mean deviation of a data set.

Average Deviation Calculator

Calculate the average deviation of a data set.

Force Calculator

Calculate force from mass and acceleration.

Pressure Calculator

Calculate pressure from force and area.

Power Calculator

Calculate power from work and time.

Acceleration Calculator

Calculate acceleration from change in velocity and time.

Acceleration Due To Gravity Calculator

Calculate gravitational acceleration between two masses at a distance.

Angular Velocity Calculator

Calculate angular velocity from angle and time.

Angular Acceleration Calculator

Calculate angular acceleration from change in angular velocity and time.

Angular Momentum Calculator

Calculate angular momentum of a rotating body.

Average Speed Calculator

Calculate average speed from total distance and time.

Average Velocity Calculator

Calculate average velocity from displacement and time.

Centripetal Acceleration Calculator

Calculate centripetal acceleration of circular motion.

Centripetal Force Calculator

Calculate centripetal force for circular motion.

Circular Velocity Calculator

Calculate the velocity of an object in circular motion.

Displacement Calculator

Calculate displacement from velocity and time.

Escape Velocity Calculator

Calculate the escape velocity from a celestial body.

Free Fall Calculator

Calculate free fall distance and velocity under gravity.

Gravitational Force Calculator

Calculate the gravitational force between two objects.

Gravitational Potential Energy Calculator

Calculate gravitational potential energy from mass, height and gravity.

Impulse Calculator

Calculate impulse from force and time, or from change in momentum.

Impulse With Time Calculator

Calculate impulse from force and time duration.

Kinetic Energy Calculator

Calculate the kinetic energy of a moving object.

Kinetic Friction Calculator

Calculate the kinetic friction force from coefficient and normal force.

Momentum Calculator

Calculate the momentum of a moving object.

Momentum With Time Calculator

Calculate change in momentum using force and time.

Momentum With Velocity Calculator

Calculate momentum from mass and velocity.

Newton's Second Law Of Motion Calculator

Calculate force, mass or acceleration using F = ma.

Potential Energy Calculator

Calculate the potential energy stored in a spring.

Elastic Potential Energy Calculator

Calculate the elastic potential energy stored in a compressed spring.

Power With Displacement Calculator

Calculate power from force, displacement and time.

Projectile Motion Calculator

Calculate projectile motion parameters from initial velocity and angle.

Projectile Motion Horizontal Displacement Calculator

Calculate the horizontal displacement of a projectile.

Projectile Motion Vertical Displacement Calculator

Calculate the vertical displacement of a projectile at a given time.

Projectile Motion Vertical Velocity Calculator

Calculate the vertical velocity of a projectile at a given time.

Simple Pendulum Calculator

Calculate the time period and frequency of a simple pendulum.

Speed Distance Time Calculator

Calculate speed, distance or time from the other two.

Velocity Calculator

Calculate velocity from displacement and time.

Work Calculator

Calculate work done from force and displacement.

Total Work Calculator

Calculate the total work done by multiple forces.

Wavelength Calculator

Calculate wavelength from velocity and frequency.

Wavelength To Frequency Calculator

Calculate frequency from wavelength and wave speed.

Frequency Calculator

Calculate frequency from period or wavelength and speed.

Speed Of Sound Calculator

Calculate the speed of sound in air at a given temperature.

Doppler Shift Calculator

Calculate the observed frequency due to the Doppler effect.

Mach Number Calculator

Calculate the Mach number from object speed and speed of sound.

Buoyancy Calculator

Calculate the buoyant force on an object submerged in fluid.

Friction Calculator

Calculate the friction force from coefficient and normal force.

Static Friction Calculator

Calculate the maximum static friction force.

Hooke's Law Calculator

Calculate the force exerted by a spring from displacement.

Young's Modulus Calculator

Calculate Young's modulus from stress and strain.

Stress Calculator

Calculate stress from force and cross-sectional area.

Strain Calculator

Calculate strain from change in length and original length.

Heat Capacity Calculator

Calculate heat capacity from heat energy and temperature change.

Specific Heat Calculator

Calculate heat energy from mass, specific heat and temperature change.

Heat Transfer Calculator

Calculate heat transfer rate through conduction.

Newton's Law Of Cooling Calculator

Calculate temperature after time using Newton's law of cooling.

Stefan-Boltzmann Law Calculator

Calculate the total energy radiated per unit surface area of a black body.

Mass To Energy Calculator

Calculate the energy equivalent of mass using E = mc².

De Broglie Wavelength Calculator

Calculate the de Broglie wavelength of a particle.

Radioactive Decay Calculator

Calculate remaining quantity after radioactive decay.

Snell's Law Calculator

Calculate the angle of refraction using Snell's law.

Inverse Square Law Calculator

Calculate intensity at a different distance using the inverse square law.

Center Of Mass Calculator

Calculate the center of mass of a two-particle system.

Current Density Calculator

Calculate current density from current and cross-sectional area.

Electric Field Calculator

Calculate the electric field from force and charge.

Coulomb's Law Calculator

Calculate the electrostatic force between two point charges.

Parallel Plate Capacitor Calculator

Calculate the capacitance of a parallel plate capacitor.

Capacitive Reactance Calculator

Calculate the capacitive reactance of a capacitor.

Inductive Reactance Calculator

Calculate the inductive reactance of an inductor.

LC Resonance Calculator

Calculate the resonant frequency of an LC circuit.

Resistance Calculator

Calculate resistance from voltage and current using Ohm's law.

Equivalent Resistance Calculator

Calculate the equivalent resistance for resistors in series or parallel.

Voltage Divider Calculator

Calculate the output voltage of a voltage divider circuit.

DC Voltage Drop Calculator

Calculate the voltage drop across a conductor carrying DC current.

Battery Life Calculator

Estimate battery life from capacity and current draw.

Engine Horsepower Calculator

Calculate horsepower from torque and RPM.

Impact Force Calculator

Calculate the force of impact from mass and velocity.

Water Pressure Calculator

Calculate hydrostatic water pressure at a given depth.

Flow Rate Calculator

Calculate volumetric flow rate from area and velocity.

Reynolds Number Calculator

Calculate the Reynolds number for fluid flow.

Water Flow Calculator

Calculate water flow rate through a pipe.

Air Flow Calculator

Calculate air flow rate from duct size and velocity.

Pressure Drop Calculator

Calculate pressure drop across a pipe using Darcy-Weisbach equation.

Torque Calculator

Calculate torque from force, distance and angle.

Moment Calculator

Calculate the moment (turning effect) of a force.

Mass Calculator

Calculate mass from density and volume.

Shadow Length Calculator

Calculate the length of a shadow from object height and sun angle.

Specific Gravity Calculator

Calculate specific gravity from substance density and water density.

Velocity Calculator

Calculate the velocity of an object from displacement and time.

Planetary Motion Calculator

Calculate the orbital period using Kepler's third law.

Sound Wavelength Calculator

Calculate the wavelength of a sound wave.

Heat Energy Calculator

Calculate heat energy from mass, specific heat and temperature change.

Surface Area Of A Prism Calculator

Calculate the surface area of a triangular prism.

Surface Area Of A Right Cone Calculator

Calculate the surface area of a right cone from radius and height.

Chi-Square Calculator

Calculate the chi-square statistic from observed and expected values.

Z-Test Calculator

Calculate the z-score for a sample mean against a population.

T-Test Calculator

Calculate the t-statistic for a sample mean.

Binomial Distribution Calculator

Calculate binomial probabilities for n trials with success probability p.

Binomial Probability Calculator

Calculate the probability of exactly k successes in n trials.

Poisson Distribution Calculator

Calculate Poisson probabilities for a given rate λ.

Normal Distribution Calculator

Calculate probabilities for a normal distribution.

Confidence Interval Calculator

Calculate the confidence interval for a population mean.

Margin Of Error Calculator

Calculate the margin of error for a survey or sample.

Standard Error Calculator

Calculate the standard error of the mean.

Coefficient Of Variation Calculator

Calculate the coefficient of variation from mean and standard deviation.

Correlation Coefficient Calculator

Calculate the Pearson correlation coefficient between two variables.

Pearson Correlation Calculator

Calculate the Pearson correlation coefficient between two variables.

Covariance Calculator

Calculate the covariance between two variables.

Variance Calculator

Calculate the variance of a data set.

Skewness Calculator

Calculate the skewness of a data set.

Quartile Calculator

Calculate the quartiles of a data set.

Interquartile Range Calculator

Calculate the interquartile range (IQR) of a data set.

Weighted Mean Calculator

Calculate the weighted mean of values with weights.

Harmonic Mean Calculator

Calculate the harmonic mean of a set of numbers.

Geometric Mean Calculator

Calculate the geometric mean of a set of numbers.

Conditional Probability Calculator

Calculate the conditional probability P(A|B).

Event Probability Calculator

Calculate the probability of an event from favorable and total outcomes.

Coin Toss Probability Calculator

Calculate the probability of getting k heads in n coin tosses.

Bayes Theorem Calculator

Calculate posterior probability using Bayes' theorem.

Sum Of Squares Calculator

Calculate the sum of squares of a data set.

Root Mean Square Calculator

Calculate the root mean square (RMS) of a data set.

Process Capability (Cp) Calculator

Calculate the process capability index Cp.

Process Capability (Cpk) Calculator

Calculate the process capability index Cpk.

Effect Size Calculator

Calculate Cohen's d effect size between two groups.

R-Squared Calculator

Calculate the coefficient of determination from correlation.

Linear Regression Calculator

Calculate the slope and intercept of a linear regression line.

Line Of Best Fit Calculator

Calculate the line of best fit for a set of points.

5 Number Summary Calculator

Calculate the five-number summary of a data set.

Mean Absolute Deviation Calculator

Calculate the mean absolute deviation of a data set.

Relative Standard Deviation Calculator

Calculate the relative standard deviation (RSD).

Geometric Distribution Calculator

Calculate the probability of first success on the k-th trial.

Uniform Distribution Calculator

Calculate probabilities for a continuous uniform distribution.

Exponential Distribution Calculator

Calculate probabilities for an exponential distribution.

Sample Mean Calculator

Calculate the mean of a sample data set.

Sampling Error Calculator

Calculate the sampling error of a sample.

Coefficient Of Determination Calculator

Calculate the coefficient of determination from correlation.

ANOVA Calculator

Calculate the F-statistic for a one-way ANOVA.

F-Test Calculator

Calculate the F-statistic for comparing two variances.

F-Distribution Calculator

Calculate the F-distribution density at a given value.

Hypergeometric Distribution Calculator

Calculate hypergeometric probabilities.

Probability Density Function Calculator

Calculate the normal probability density at a value.

Relative Frequency Calculator

Calculate the relative frequency of an event.

Chemical Calculator

Calculate the number of moles from mass and molar mass.

Ionic Calculator

Calculate the net charge of an ion from protons and electrons.

Ionic Formula Calculator

Predict the formula of an ionic compound from ion charges.

Molecular Calculator

Calculate molecular weight from mass and number of moles.

Periodic Table Calculator

Look up atomic number, symbol and atomic mass of common elements.

Decameter To Meters Calculator

Convert decameters to meters and other length units.

Arc Of A Circle Calculator

Calculate the arc length of a circle from radius and central angle.

Area Of Rhombus Calculator

Calculate the area of a rhombus from its diagonals.

Cone Calculator

Calculate the volume and surface area of a cone.

Cube Calculator

Calculate the volume, surface area and diagonal of a cube.

Cylinder Calculator

Calculate the volume and surface area of a cylinder.

Perimeter Calculator

Calculate the perimeter of a rectangle, square, triangle or circle.

Perimeter And Area Of Ellipse Calculator

Calculate the perimeter and area of an ellipse.

Polygon Calculator

Calculate the area and perimeter of a regular polygon.

Rectangular Prism Calculator

Calculate the volume and surface area of a rectangular prism.

Sphere Calculator

Calculate the volume and surface area of a sphere.

Torus Surface Area Calculator

Calculate the surface area of a torus.

Triangular Prism Calculator

Calculate the volume and surface area of a triangular prism.

Triangular Pyramid Calculator

Calculate the volume of a triangular pyramid.

Adding Scientific Notation Calculator

Add two numbers written in scientific notation.

Subtracting Scientific Notation Calculator

Subtract two numbers written in scientific notation.

Multiplying Scientific Notation Calculator

Multiply two numbers written in scientific notation.

Dividing Scientific Notation Calculator

Divide two numbers written in scientific notation.

Adding Unlike Fractions Calculator

Add two fractions with different denominators.

Algebra Calculator

Solve a linear equation of the form ax + b = c.

Algebra Division Calculator

Evaluate the rational expression (ax + b) / (cx + d) at a given x.

Algebra Factoring Calculator

Factor a quadratic expression ax^2 + bx + c into linear factors.

Combination Calculator

Calculate the number of combinations nCr where order does not matter.

Dividing Integers Calculator

Divide two integers and show the quotient and remainder.

Equation Calculator

Solve a linear equation ax + b = c for x.

Factorial Calculator

Calculate the factorial n! of a non-negative integer.

Factoring Calculator

Factor a quadratic expression into its linear factors.

Fractions Calculator

Add, subtract, multiply and divide two fractions.

GCF Calculator

Find the greatest common factor (GCF) of two numbers.

Graphing Calculator

Evaluate a quadratic function f(x) = ax^2 + bx + c and find its vertex.

Inequalities Calculator

Solve a linear inequality ax + b < c for x.

LCM Calculator

Find the least common multiple (LCM) of two numbers.

Like And Unlike Decimals Calculator

Check whether two decimals have the same number of decimal places.

Multiplying Radicals Calculator

Multiply two square roots: sqrt(a) x sqrt(b) = sqrt(a x b).

Partial Fraction Decomposition Calculator

Decompose (ax + b) / ((x + c)(x + d)) into partial fractions.

Polynomial Long Division Calculator

Divide ax^2 + bx + c by dx + e and find the quotient and remainder.

Remainder Theorem Calculator

Find the remainder when P(x) = ax^2 + bx + c is divided by (x - k).

Sine Cosine Tangent Calculator

Calculate sin, cos and tan of an angle in degrees.

Sin And Cos Periodic Function Calculator

Find the amplitude and period of f(x) = a sin(bx) or a cos(bx).

Trigonometric Functions Calculator

Calculate all six trigonometric functions of an angle in degrees.

Trigonometric Identities Solver Calculator

Verify the Pythagorean identity sin^2(x) + cos^2(x) = 1 for an angle.

Vector Projection Calculator

Project vector u onto vector v in 2D.

Calculus Calculator

Find the derivative of f(x) = ax^2 + bx + c at a given x.

Implicit Differentiation Calculator

Find dy/dx for the circle x^2 + y^2 = r^2 at a point (x, y).

Integration By Parts Calculator

Evaluate the definite integral of x e^(ax) from 0 to x.

Partial Derivative Calculator

Find the partial derivatives of f(x, y) = ax^2 y + bxy^2.

Measurement Calculator

Convert a length in meters to feet, inches, yards, kilometers and centimeters.

Absolute Pressure Calculator

Calculate absolute pressure from gauge pressure and atmospheric pressure.

Angular Speed Calculator

Calculate angular speed from angle and time.

Friction Loss Calculator

Calculate head loss in a pipe using the Darcy-Weisbach equation.

Gravity Calculator

Calculate gravitational acceleration at a distance from a mass.

Physical Pendulum Calculator

Calculate the period of a physical pendulum.

Pipe Flow Calculator

Calculate the volumetric flow rate through a pipe.

Trajectory Calculator

Calculate the height of a projectile at a horizontal distance.

AC To DC Converter Calculator

Convert AC RMS voltage to DC voltage for full-wave rectification.

Antenna Gain Calculator

Calculate antenna gain in dB from input and output power.

Effective Noise Temperature Calculator

Calculate effective noise temperature from noise figure.

Energy Storage Calculator

Calculate energy stored in a capacitor or battery.

RC IC Circuit Frequency Variation Calculator

Calculate the cutoff frequency of an RC circuit.

Signal To Noise Ratio Calculator

Calculate the signal-to-noise ratio in dB.

Wheatstone Bridge Calculator

Calculate the unknown resistance in a Wheatstone bridge.

Zener Diode Calculator

Calculate the series resistor for a zener diode regulator.

Metal Weight Calculator

Calculate the weight of a rectangular metal bar from its dimensions and density.

Statistics Calculator

Calculate mean, median, variance and standard deviation of a data set.

Linear Correlation Coefficient Calculator

Calculate the Pearson linear correlation coefficient between two variables.

All Calculators A-Z1155

2 3 4 5 7 8 A B C D E F G H I K L M N O P Q R S T U V W X Y Z

22

31

3 Digit Number Addition Calculator

43

52

71

7th Pay Commission Calculator

85 A93

B36

C103

D76

E51

F57

G37

H36

I53

K7

L48

M93

N17

O18

P103

Q7

R73

S130

T45

U7

W12

X3

Y2

Z4

FAQs on Free Online Calculators

Are all these calculators free to use?

Yes, all 1155 calculators on this page are completely free to use. There is no sign-up, no app download and no hidden charges - just open the calculator you need and get instant results.

What types of calculators are available?

We cover loans (EMI, home, car, education), investments (SIP, mutual funds, CAGR), tax (income tax, GST, TDS, HRA), deposits (FD, RD, PPF), retirement (NPS, EPF, gratuity), health (BMI, calorie, BMR), math and everyday utility converters.

Do I need to install any app to use these calculators?

No. Every calculator runs directly in your browser on any device - mobile, tablet or desktop. There is nothing to install.

Are the calculator results accurate?

Yes. All calculators use standard financial and mathematical formulas. Loan and investment calculators use the same formulas banks and financial institutions use.

How do I find a specific calculator?

Use the search box at the top of this page, jump to a category, or browse the complete A-Z list of all calculators below.

Can I use these calculators on my mobile phone?

Yes, all calculators are fully responsive and work smoothly on mobile phones, tablets and desktop computers.

Explore 1155 Free Online Calculators for Every Need

Loans Calculators15

Investments Calculators32

Finance Calculators38

Tax Calculators26

Deposits Calculators7

Retirement Calculators6

Health Calculators26

Other Calculators1005

All Calculators A-Z1155

22

31

43

52

71

85

A93

B36

C103

D76

E51

F57

G37

H36

I53

K7

L48

M93

N17

O18

P103

Q7

R73

S130

T45

U7

V30

W12

X3

Y2

Z4

FAQs on Free Online Calculators

Are all these calculators free to use?

What types of calculators are available?

Do I need to install any app to use these calculators?

Are the calculator results accurate?

How do I find a specific calculator?

Can I use these calculators on my mobile phone?