BMR Calculator
Calculate your Basal Metabolic Rate and daily calorie needs at different activity levels.
Activity levels
Active: 2,790 cal
Very Active: 3,073 cal
What is BMR Calculator?
A Basal Metabolic Rate (BMR) calculator estimates the calories your body burns at complete rest to maintain vital functions like breathing and heartbeat.
BMR is the largest component of your daily calorie burn — typically 60-70% of total energy expenditure.
How does the BMR Calculator work?
Where W is weight in kg, H is height in cm, and A is age in years.
The calculator also shows your total daily burn when multiplied by an activity factor.
How to use the BMR Calculator?
- Enter your age, gender, weight, and height.
- The calculator shows your BMR and total daily calorie needs.
Example
Try the calculator with your own numbers
- Enter your values in the input fields above.
- Adjust the values to match your situation.
- The result updates instantly as you change the inputs.
Benefits of using the BMR Calculator
- Know your baseline calorie burn.
- Set accurate nutrition targets.
- Understand why metabolism varies by body size.
Who should use the BMR Calculator?
- People tracking their weight, fitness, and daily health numbers.
- Fitness enthusiasts planning workouts, calories, and protein intake.
- Parents monitoring their child's growth and development.
- Anyone preparing for a health check-up or fitness goal.
Tips for getting the most out of the BMR Calculator
- Use your most recent measurements for the most accurate result.
- Re-check periodically as your weight, age, or activity level changes.
- Treat the result as a guideline, not a medical diagnosis — consult a professional for health decisions.
Frequently Asked Questions
What affects BMR?
Age, gender, muscle mass, and genetics. Muscle burns more calories than fat, so strength training raises BMR.
Should I eat below my BMR to lose weight?
No. Eating below BMR for long periods is unhealthy and slows metabolism. Create a modest deficit from your total burn instead.
Small daily decisions add up. Use this calculator to track your numbers and make healthier choices with confidence.
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