About the Night Shift Hours Calculator
Hours worked on a shift that crosses midnight, with the night-hours premium.
Also known as: overnight shift calculator, shift crossing midnight, night hours calculator, unsocial hours.
How to use this calculator
- Enter shift starts, shift ends, unpaid break, night hours start and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
hours = end − start (+24 h across midnight) − break
Worked example
Using the values pre-filled in the calculator above:
- Shift starts: 22:00
- Shift ends: 06:00
- Unpaid break = 45 min
- Night hours start: 23:00
- Night hours end: 06:00
- Base hourly rate = 16
- Night premium = 25 %
the calculator returns:
- Hours worked: 7 h 15 min
- Decimal hours: 7.25
- Night hours: 6.344
- Day hours: 0.906