Hours & Minutes Calculator
Add or subtract durations written as signed hours:minutes.
Tool inputs stay in your browser · optional AI search sends your query
Good to know: Durations may exceed24hours. Minus applies to the whole duration. Minutes must be00–59. This adds elapsed durations, not timestamps or timezone-aware clock readings.
How to use it (step by step)
- 1Type or paste your text into the “Input” box. There is already an example in it so you can see how it works; press Clear to start with your own.
- 2The answer appears right away in the “Result” box. No button needed.
- 3Press Copy and paste the result wherever you need it.
Words to know
- Time card / hours
- Adding up hours worked (minus breaks) to calculate pay. Overtime is time beyond normal hours, often paid at a higher rate.
- App signing / keystore
- Every app is signed with a private key (kept in a keystore file). Updates must be signed with the same key, so never lose it.
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