Dates & Time

Hours & Minutes Calculator (Time Between, Add, Convert)

Three tools in one: find the hours and minutes between two clock times, add or subtract a duration, or turn HH:MM into decimal hours. You can knock off a break when measuring a span.

How to use
  1. Pick a mode: time between two clocks, add/subtract a duration, or HH:MM to decimal.
  2. Enter your start and end times, or the duration you want to apply.
  3. Add a break length if you want it deducted, then read the result.
Date math uses your inputs as given; check time-zone and leap-year edge cases.
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Common questions

How do I turn 8 hours 30 minutes into decimal hours?

Divide the minutes by 60 and add them on, so 8:30 is 8.5 hours. The minute-to-decimal mode does this for you.

Does it handle a shift that crosses midnight?

Yes. If the end time is earlier than the start, it assumes the next day and counts the overnight hours correctly.

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