Free Time Duration Calculator
This time duration calculator helps you calculate the difference between two times. Enter a start time and end time, add an optional break, and the tool will show the total duration in hours, minutes and decimal hours.
It is useful for shifts, study sessions, travel time, projects, workouts, timed tasks, timesheets and any situation where counting hours manually makes your brain quietly resign.
How To Use This Time Duration Calculator
Enter the start time, end time and optional break minutes. Click Calculate Duration to see the total time between the two times.
Time Duration Notes
If the end time is earlier than the start time, the calculator treats it as an overnight duration ending the next day. Break minutes are subtracted from the final result.
Related Tools
Time Duration Calculator FAQ
Can it calculate overnight time?
Yes. If the end time is earlier than the start time, the calculator assumes the end time is on the next day.
Can I subtract break time?
Yes. Enter break minutes and the calculator will subtract them from the total duration.
What are decimal hours?
Decimal hours show the duration as a number, such as 7.50 hours for 7 hours and 30 minutes. This is useful for timesheets, pay calculations and reporting.