Work Hours Calculator
Work out hours worked from start and end times, minus an unpaid break, in decimal and h:m form.
Clock in (start)
Clock out (end)
min
8h 0m worked
8
8h 0m
480
8h 30m
30 min
Formula
Examples
| Input | Result |
|---|---|
| 09:00 to 17:30, 30 min break | 8.0 hours (8h 0m) |
| 22:00 to 06:00, 45 min break | 7.25 hours (7h 15m) |
About this calculator
The work hours calculator turns a clock-in time, a clock-out time and an unpaid break into the number of hours actually worked. The gross span is the time between clock-in and clock-out; the unpaid break is then subtracted to give net worked time. Results are shown in decimal hours (handy for payroll) and in hours and minutes.
Overnight shifts are supported: if the clock-out time is earlier than the clock-in time, 24 hours are added so a shift from 22:00 to 06:00 is measured correctly. Enter the break as a number of minutes; if the break is longer than the shift, the calculator flags it instead of returning a negative value.
Frequently asked questions
Most payroll systems multiply an hourly rate by decimal hours, so 8 hours 30 minutes is entered as 8.5 rather than 8:30.
Yes. If the clock-out time is before the clock-in time, the calculator assumes the shift ended the next day and adds 24 hours.
The break minutes you enter are treated as unpaid and subtracted from the total. Leave it at 0 if your break is paid.
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