Time Duration Calculator
Calculate the exact duration between two times or dates, in hours, minutes and seconds — free, fast and private.
Enter two times and click Calculate Duration.
How to use Time Duration Calculator
- Enter a start time and an end time.
- Tick overnight if the end time is on the next day.
- Click Calculate Duration.
- See the result in hours, minutes and total minutes.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
Is the Time Duration Calculator free?
Yes, it is 100% free with no sign-up.
What if the shift runs past midnight?
Tick the overnight option and the end time is counted on the next day.
Can I calculate durations across dates?
Yes. Use the date and time fields to measure a duration spanning several days.
What units are shown?
The result is shown as hours and minutes, plus the total in minutes and seconds.