Time Calculator

Add/subtract hh:mm — outputs hh:mm and decimal hours.

Result

Result9:15
Decimal hours9.25

Time Calculator — FAQs

How do I add hours and minutes?

Convert to minutes, add, convert back. 7:45 + 1:30 = 555 min = 9:15.

How do I add times together?

Convert to minutes, add, convert back — 1h 45m + 2h 30m = 4h 15m. Decimal time: multiply minutes by 60.

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Free to use — paste this snippet into any webpage. It auto-resizes and includes a small attribution link. Add ?theme=dark to the iframe URL for dark mode.