Time Duration Calculator — free online
Ever sat there trying to figure out how many hours you worked between 9:15 and 5:40, and lost count halfway through? Or you needed to add 90 minutes to a start time and your head just gave up. We added a free tool that does it for you — Time Duration Calculator — right in your browser.
What it does
It finds the hours and minutes between two times for you. You can also add or subtract time from a starting point, and sum up a whole timesheet so all your shifts add up to one clear total. No counting on your fingers, no messing with a calculator.
Nothing leaves your device
The whole thing runs in your browser. Nothing you type is uploaded anywhere, and nothing is saved. When you close the tab, it's gone — your times stay with you.
How to use it
- Open Time Duration Calculator and type in your start and end time.
- Pick what you need — the gap between them, add or subtract time, or sum a timesheet.
- Read off the result and copy it wherever you need it.
It's free with no limit. There are more small tools on the Apps page.