kmra.dev

Time calculator

Add and subtract hours and minutes, and find the time between two clock times.

Write times as 2:45, 1:30:15, 2h 45m, 90m or 1.5 (hours).

Total
4:15
4 hours 15 minutes
In hours
4.25
In minutes
255

How it's worked out

2:45 + 1:30 = 4:15

  1. 1Type times like 2:45.
  2. 2Add or subtract them.
  3. 3See the total in hours and minutes.
Are my numbers private?
Yes. Every calculation runs in your browser, and what you type stays on your device.
Does it work offline?
Yes. Once this page has loaded, it keeps working without an internet connection.
How exact are the results?
The maths keeps full precision and only rounds what you see. For loans and taxes, check the final figures with your bank or tax office.

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