Time Duration

Calculate the duration between a start and end time, even across midnight. Runs entirely in your browser.

Duration
8h 30m
Total hours8.50
Total minutes510

Processed on your device. This file is never uploaded.

  1. 1Enter the start time.
  2. 2Enter the end time.
  3. 3Read the duration in hours and minutes.

How long between two times

Working out the gap between two clock times means carrying minutes and watching for midnight — the sort of small sum that is easy to get wrong on a timesheet. This tool does it instantly, in hours and minutes, and also as decimal hours for billing.

Overnight handled

When the end time falls before the start time, the calculator assumes the period runs past midnight rather than producing a negative result, so night shifts and late sessions come out right. It all runs on your device.

Frequently asked questions