Time Calculator

Add or subtract two durations in hours, minutes and seconds.

How this calculator works

Both times are converted to seconds, added or subtracted, then converted back to hours, minutes and seconds. Results can be shown as decimals for pay or billing.

Frequently asked questions

How do I add hours and minutes?

Enter each time in hours, minutes and seconds, choose Add and the total is shown with decimal hours too.

Results are shown in hours, minutes and seconds.