Working with Time Durations

Time calculations are essential in many daily activities like scheduling meetings, calculating work hours, or planning events. This calculator helps you add or subtract time durations accurately.

How to Use

Enter time durations in HH:MM:SS format (e.g., 2:30:45 for 2 hours, 30 minutes, 45 seconds)
Select the operation (add or subtract)
Click Calculate to see the result

Examples

Adding 1:30:00 and 0:45:00 gives 2:15:00
Subtracting 0:45:00 from 2:00:00 gives 1:15:00
Adding 8:00:00 and 6:30:00 gives 14:30:00 (14 hours 30 minutes)

Time Conversion Reference

Hours	Minutes	Seconds
1	60	3600
0.5	30	1800
0.25	15	900

Tips & Notes

You can omit leading zeros (e.g., 1:5:0 for 1:05:00)
Negative results will show with a minus sign (e.g., -1:30:00)
Results exceeding 24 hours will display the total hours (e.g., 25:00:00)

Time Calculator

Working with Time Durations

How to Use

Examples

Time Conversion Reference

Tips & Notes

Time Converter

Frequently Asked Questions

What time formats are supported?

How are negative results handled?

Can I calculate with days?

Disclaimer

References

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Time Calculator - Add and Subtract Times

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