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Your result
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How this tool works
Each duration is converted to integer minutes and then added or subtracted. The resulting total is converted back to hours and minutes.
Example
2:30 + 1:45 − 0:15 = 4 hours.
What this tool does not include
Entries are elapsed durations, not time-of-day values. Use one value per line in HH:MM format, with minutes from 00 to 59. Negative values subtract time.
Frequently asked questions
Can I type 0:75?
No. Use 1:15 instead. Minutes must be 00–59.
Are negative totals supported?
Yes. A minus sign is displayed if the sum is negative.
Can I paste entries?
Yes, up to 100 lines.