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Shift Work Calculators

Rotating Shift Calculator

Shifts worked, days off and average weekly hours for a rotating pattern.

Enter values

Results update as you type.

Result

Average weekly hours

38.5

Shifts in the period
182
Total paid hours
2,002
Days off
182
Cycle length
8 days (4 on, 4 off)
Cycles in the period
45.5
Paid hours per shift
11
Share of days working
50%

About the Rotating Shift Calculator

Shifts worked, days off and average weekly hours for a rotating pattern.

Also known as: shift pattern calculator, four on four off, continental shift pattern, rota calculator.

How to use this calculator

  1. Enter days on, days off, shift length, unpaid break per shift and the other fields.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

weekly hours = shifts per week × paid hours per shift

Worked example

Using the values pre-filled in the calculator above:

  • Days on = 4
  • Days off = 4
  • Shift length = 12 hours
  • Unpaid break per shift = 60 min
  • Over how many weeks = 52

the calculator returns:

  • Average weekly hours: 38.5
  • Shifts in the period: 182
  • Total paid hours: 2,002
  • Days off: 182