Pro-Rata Salary Calculator
Work out what a part-time role should pay from the full-time salary and the difference in weekly hours.
Enter your details below.
How to use
- Enter the full-time annual salary.
- Enter the full-time weekly hours and the part-time weekly hours.
- Click Calculate Pro-Rata Salary to see the annual, monthly and hourly figures.
About this tool
Pro rata means in proportion: a part-time salary is the full-time salary scaled down by the fraction of full-time hours actually worked. Enter the full-time annual salary, the full-time weekly hours and the part-time weekly hours, and the tool returns the pro-rata annual salary, the monthly equivalent, the full-time hourly rate (full-time salary divided by full-time hours times 52 weeks) and the part-time fraction. The same principle works with days instead of hours, provided the working day is the same length. Holiday entitlement is usually calculated pro rata too, so part-time staff receive a proportion of the full-time allowance — check your contract for the exact terms.
Frequently asked questions
What does pro rata mean?
In proportion. A part-time salary is scaled down from the full-time salary in proportion to the hours or days actually worked.
What if I work fewer days, not fewer hours?
Use the same principle with days: full-time salary times part-time days divided by full-time days, provided the working day is the same length.
Does pro rata affect holiday entitlement?
Yes, holiday is usually also calculated pro rata, so part-time staff receive a proportion of the full-time holiday allowance. Check your contract for the exact terms.