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Time Duration Calculator
Find the exact duration between two times in hours, minutes, and seconds. Handles overnight and multi-day spans.
Enter a start and end time, then click Calculate Duration.
How it works
- 1Enter your start and end times
Use the 24-hour or AM/PM picker your browser provides.
- 2Optionally enable dates
Turn on the date toggle to span multiple days.
- 3Overnight spans are automatic
If end time is earlier than start, we add 24 hours.
- 4Read your results
See hours, minutes, seconds, and totals at a glance.
Frequently asked questions
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