Everyday tool
Time Duration Calculator
Choose a start and end time to calculate the duration between them.
Runs in your browser. No upload.
Start
End
Choose a start and end time.
Total days
Total hours
Exact duration
About this tool
Time Duration Calculator made simple.
Useful for work hours, project timing, travel, events and any interval that crosses more than one day.
Common questions
About Time Duration Calculator.
How do I calculate hours between two times?
Choose a start date and time, choose an end date and time, then select Calculate duration.
Can the duration cross more than one day?
Yes. The result includes total days, total hours and an exact days-hours-minutes-seconds breakdown.