Hours Calculator — Time Between Two Times

This hours calculator finds the time between two clock times — a shift, a flight, a study session or a parking stay — and takes off an unpaid break. It handles shifts that run past midnight and gives the answer as hours and minutes, decimal hours for timesheets and payroll, total minutes and, if you add an hourly rate, the pay.

How to use this tool

1. Enter the start time and the end time.
2. Enter any unpaid break in minutes, or 0.
3. Optionally add an hourly rate to see the pay for the period.
4. Copy the duration as h:mm:ss or as decimal hours, whichever your timesheet uses.

Formula

Duration = (end − start, + 24 h if the end is earlier) − break

Both times are converted to seconds after midnight. If the end is earlier than the start, the shift is assumed to cross midnight once, so 24 hours are added. Decimal hours are seconds ÷ 3,600; 15 minutes is 0.25 h and 45 minutes is 0.75 h.

Example

A night shift from 22:00 to 06:15 with no break: 2 hours until midnight plus 6 hours 15 minutes after it gives 8:15:00, or 8.25 decimal hours. At $20 an hour that is $165.00.