Time Calculator (Add & Subtract)
Calculator ToolsAdd or subtract hours, minutes, seconds
FreePrivateInstant
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All history →Time Calculator (Add & Subtract) — at a glance
Add up or subtract times without getting tangled in 60-minute maths.
2h 45m 30s
+ 1h 30m 45s
Run
4h 16m 15s
How to use it — step by step
Two durations in hours, minutes and seconds, and whether to add or subtract.
1
Enter your values
Fill in the boxes. Sensible example values are already filled in for you.
2
Calculate Time
Press the button. The answer is worked out instantly on your device.
3
Read or copy the result
See the big answer and the extra details, then press Copy to keep them.
Pro tips
Small things that make the result better.
✦Use Subtract to find the difference between two durations.
✦Decimal hours are handy for billing and payroll.
✦Leave unused boxes at 0.
Quick facts
Add & subtractdurations
Decimalhours shown
Secondssupported
Freeno signup
Frequently Asked Questions
Can the answer be negative?+
Yes. If the second time is larger when subtracting, the result shows a minus sign.
How do I add more than two times?+
Add two, then use the result as the first time and add the next one.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
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