Day shift
9:00 AM–5:00 PM is 8 elapsed hours. Subtract a 30-minute break: 7h 30m (7.50 hours).
8h 00m
If the end time is earlier than the start time, the calculator assumes the shift ends the following day.
Use this result with your time card
These calculators are intended for arithmetic and planning. They do not determine tax, overtime entitlement, payroll compliance or employment-law obligations.
Calculate shift hours after breaks
Worked time = elapsed time − unpaid break time
First find the time between the start and end. If the end is earlier than the start, add the time remaining until midnight and the time after midnight. Then subtract unpaid breaks.
Overnight shift
10:00 PM–6:30 AM is 8h 30m. Subtract a 30-minute break: 8h 00m (8.00 hours).
12-hour span
6:00 AM–6:00 PM is 12 elapsed hours. Subtract a one-hour break: 11h 00m (11.00 hours).
Are paid breaks subtracted?
Enter only unpaid break minutes. If a break counts toward your paid hours, leave it in the worked total.
What are the limits of this calculator?
It uses clock times for a span of less than 24 hours. Equal start and end times mean zero elapsed time, not a full day. It does not account for dates, time zones or daylight-saving clock changes. For several shifts, use the weekly time card.