Time Card Hours Calculator
Enter the clock-in time, clock-out time, any unpaid break, and your hourly rate to work out the hours on your time card and the gross pay for the shift. Overnight shifts are handled automatically: if the clock-out is earlier than the clock-in, the calculator assumes the shift crossed midnight. The result is shown both as decimal hours and as hours and minutes.
How time card hours are calculated
span minutes = clock-out - clock-in (add 24 h if overnight)
worked minutes = span minutes - unpaid break
worked hours = worked minutes / 60
gross pay = worked hours * hourly rate
Times are read on a 24-hour clock. If clock-out is earlier than clock-in, a full day is added so overnight shifts compute correctly.
Worked example
A shift from 09:00 to 17:30 is 8 hours 30 minutes of span. Subtracting a 30-minute unpaid break leaves 8.00 worked hours. At $20 per hour that is $160.00 gross pay.
Time card hours: frequently asked questions
How are time card hours calculated?
The calculator finds the time between clock-in and clock-out, subtracts any unpaid break minutes, and reports the net worked hours as a decimal and in hours and minutes. It then multiplies the net hours by your hourly rate to give gross pay.
How do I enter an overnight shift?
If the clock-out time is earlier in the clock than the clock-in time, the calculator assumes the shift crossed midnight and adds a day, so a shift from 22:00 to 06:00 counts as 8 hours before any break.
Is the break paid or unpaid?
The break minutes you enter are treated as unpaid and subtracted from the worked time. If your break is paid, enter 0 break minutes so the full span counts.
Does this calculate overtime?
This calculator returns total worked hours and pay at a single rate. Overtime rules vary by jurisdiction and employer. The US Fair Labor Standards Act sets federal overtime at time-and-a-half beyond 40 hours in a workweek; check your local rules for daily overtime thresholds.
Official sources
- U.S. Department of Labor, Fair Labor Standards Act: dol.gov (overtime and hours rules).
- Time arithmetic follows the standard 24-hour clock.
Reviewed by the CalculatorHub team, edited by James Graham, 19 June 2026. See our methodology.