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Time duration calculator

Calculate the time between two clock times (overnight and with breaks) and add or subtract durations in h:mm:ss and decimal hours.

AvailableIn your browserInput: Text

How to use: Time duration calculator

  1. Choose time between two clock times or adding and subtracting durations.
  2. Enter the times (and an optional break) or one duration per line.
  3. Read the total as h:mm:ss, decimal hours and minutes.

What it accepts and what you get

Input
Times like 09:30 or durations like 1:45, 90m, 1h 30m or 1.5h.
Output
The total duration in several formats.
Where your data is processed
Your data is processed in your browser and is not sent to our servers.

Limitations and notes

  • If the end time is earlier than the start, it is counted into the next day.
  • Daylight-saving changes are not considered.

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