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Shift Work Calculators

Work Rest Ratio Calculator

Ratio of working time to rest, with the rest between shifts and recovery assessment.

Enter values

Results update as you type.

Result

Work to free time ratio

1 : 1.29

Committed hours per week
52
Sleep hours per week
49
Free hours per week
67
Rest between shifts
11 hours
Week spent working or commuting
31%
Assessment
Reasonable balance

About the Work Rest Ratio Calculator

Ratio of working time to rest, with the rest between shifts and recovery assessment.

Also known as: rest period calculator, work life balance hours, shift recovery time, rest between shifts.

How to use this calculator

  1. Enter hours worked per week, sleep per night, commute per working day, working days per week.
  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

free time = 168 hours − work and commute − sleep

Worked example

Using the values pre-filled in the calculator above:

  • Hours worked per week = 48
  • Sleep per night = 7
  • Commute per working day = 1 hours
  • Working days per week = 4

the calculator returns:

  • Work to free time ratio: 1 : 1.29
  • Committed hours per week: 52
  • Sleep hours per week: 49
  • Free hours per week: 67