About the Time Duration Calculator
Work out shift lengths, billable hours or travel time. Enter a start and end time; if the end is earlier, the calculator assumes the period crosses midnight. Subtract an unpaid break and get the result in hours:minutes and decimal hours ready for timesheets and invoices.
How to use it
- Enter start and end times.
- Enter break minutes if any.
- Read the duration and decimal hours.
Good to know
- For periods longer than 24 hours, use the Date Difference Calculator.