Add hours and minutes
Add and subtract durations in hours and minutes, with decimal-hour totals.
Enter one H:MM duration per line, using a minus sign to subtract. Up to 200 lines are supported.
Result
Enter your data and run the tool. Your result will appear here.
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Method, examples and limits
2:30 + 1:45 − 0:15 = 4:00, or 240 minutes and 4 decimal hours. Hours may exceed 24 because these are durations rather than clock times. Minutes must range from 00 to 59. Calculations use whole minutes and retain the sign of negative totals.
Frequently asked questions
Can I subtract a duration?
Yes. Enter a negative line, such as -0:15 to subtract fifteen minutes.
Is this data saved?
Data is processed only on this page and is not sent to the server. Reloading or navigating away clears it.