How to calculate a night shift
Enter the clock times and the unpaid break.
1
Enter the start time
Use decimal 24-hour time, so 22.5 means 22:30.
2
Enter the end time
An earlier end time is treated as the following morning.
3
Deduct the break
Add unpaid break minutes to get paid shift length.
What does this tool do?
When the end time is earlier than the start time, the shift has crossed midnight. This calculator adds 24 hours before subtracting the unpaid break, so a 22:00 to 06:30 shift is measured correctly.
The Formula
Duration = (End time − Start time + 24h if end is earlier) − Unpaid breakFrequently Asked Questions
What if the shift ends at the same time it starts?
A same start and end is ambiguous between zero hours and a 24-hour shift, so the calculator returns no result. Split a full-day shift into two entries.
Are breaks deducted automatically?
Only the unpaid break you enter is deducted. Paid rest breaks stay in the shift length.