Time Duration Calculator
Add and subtract hours, minutes, and seconds. Calculate total duration from multiple time entries.
Calculate Duration
Result
0h 0m 0s
0 seconds
Sum Multiple Durations
Enter a duration above and click "Add" to sum multiple time entries together.
No entries yet. Add times above.
How to Use Time Duration Calculator
- Enter hours, minutes, and seconds
- Click "Add" to sum durations or "Subtract" to find difference
- View result in hours:minutes:seconds format
- Add multiple entries and see running total
About Time Duration Calculator
Calculate time durations easily. Add or subtract hours, minutes, and seconds, or sum multiple time entries together. Perfect for tracking work hours, project time, or any duration calculation.
Frequently Asked Questions
Can I add multiple time entries?
Yes, add as many entries as you need and the tool will calculate the running total.
What if the result is negative?
The tool shows the absolute difference when subtracting times.
What's the maximum duration supported?
There's no practical limit. The tool handles hundreds of hours accurately.