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Calculators

Time duration calculator

Hours between two times (across midnight too) or the total of a list of durations.

  1. 1Fill in the values
  2. 2Click Run
  3. 3See results instantly

Limits

  • With no dates, an end time earlier than the start is taken to be the next day; equal times give 0.
  • Times are plain clock times: daylight-saving changes and time zones are not applied.
  • Durations in the list accept h:mm, 1h 30m, 45 min, 1.5h, 1d 2h and seconds; a bare number needs a unit.

Ask the AI chat

The AI chat can run this tool for you. Try:

  • “hours between 9:30 and 17:45”
  • “time between 22:00 and 06:30”
  • “duration between 9am and 5:30pm”

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