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Time Duration Calculator

How long between two times, or the total of several durations.

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Time Duration Calculator

Duration between two times, or add up durations

Duration

5 hours 45 minutes

Hours (decimal)
5.7500
Minutes
345
Seconds
20,700

How it was calculated

  1. 2:05 PM - 8:20 AM = 5 hours 45 minutes

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How the time duration calculator works

The duration between two clock times is the end minus the start. If the end is earlier, the time runs past midnight, so 24 hours are added.

Durations are added in seconds and converted back to hours, minutes and seconds, carrying every 60 seconds into a minute and every 60 minutes into an hour.

Using and checking your result

Published by JustYourCalculator. Check the units and assumptions above, and compare a known example before relying on the output. Calculations use browser arithmetic and may round displayed values.

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Frequently asked questions