Time Duration Calculator
Calculate the duration between two times, including overnight periods.
Note
If the end time is earlier than the start time, the calculator assumes the duration crosses midnight (overnight).
What is Time Duration Calculator?
A time duration calculator computes the exact hours, minutes, and seconds between two times or dates.
It is useful for work hours, travel time, and event planning.
How does the Time Duration Calculator work?
The calculator subtracts the start time from the end time, handling AM/PM and overnight spans.
It shows the duration in hours:minutes:seconds and in decimal hours.
How to use the Time Duration Calculator?
- Enter the start and end times.
- The calculator shows the duration in hours, minutes, and seconds.
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 Time Duration Calculator
- Track work hours accurately.
- Plan travel and event schedules.
- Calculate billing hours.
Who should use the Time Duration Calculator?
- Students and professionals who need fast, accurate results.
- Anyone who wants to verify a manual calculation.
- People who prefer a quick answer over working it out by hand.
Tips for getting the most out of the Time Duration Calculator
- Double-check the values you enter before relying on the result.
- Use the calculator to verify manual calculations or estimates.
- Bookmark the page if you use it regularly.
Frequently Asked Questions
How do I calculate hours across midnight?
The calculator handles overnight spans automatically — e.g. 10 PM to 6 AM is 8 hours.
What is decimal hours?
Decimal hours express time as a fraction of an hour — 1 hour 30 minutes is 1.5 hours, useful for payroll.
Whatever you are working on, the Time Duration Calculator is the quick way to double-check a figure before you rely on it.
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