Time Duration Calculator
Duration between times
Use this when you need a fast, accurate result — no sign-up, works entirely in your browser.
Duration—
How to Use
- Enter your details into the fields above.
- Click the calculate button to get your result instantly.
- Use the clear button to start a new calculation.
Example
- Start 08:15, end 14:40 → 6h 25m 0s
- Start 07:45, end 09:20 → 1h 35m 0s
Formula
Duration = end time − start time, expressed as hours : minutes : seconds. As with the hours calculator, an end time earlier than the start time is treated as the next day, so 22:00 → 06:00 gives 8 hours rather than a negative value.
About Time Duration Calculator
Duration between times. This free online tool gives you fast, accurate results without registration or downloads.
Everything runs locally in your browser, so your data is never uploaded or stored — privacy first.
Frequently Asked Questions
Is the Time Duration Calculator free to use? +
Yes, it is completely free with no registration or download required.
Is my date data private? +
Yes. All date calculations happen locally in your browser. Nothing is uploaded or stored.
Does the Time Duration Calculator account for time zones? +
For time-based tools, calculations use your local device time. Date tools operate on the dates you enter.