About the Monthly Shift Hours Calculator
Total monthly hours and pay from a shift pattern, with the annual equivalent.
Also known as: monthly hours calculator, shift hours per month, hours per month from rota.
How to use this calculator
- Enter shifts per month, shift length, unpaid break, hourly rate 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
monthly hours = shifts × (shift length − unpaid break)
Worked example
Using the values pre-filled in the calculator above:
- Shifts per month = 15
- Shift length = 12 hours
- Unpaid break = 60 min
- Hourly rate = 17
- Extra or overtime shifts = 2
the calculator returns:
- Monthly hours: 187
- Regular hours: 165
- Extra shift hours: 22
- Average weekly hours: 43.01