Skip to content
Finance Charts Explore tools

Income calculator

Pro Rata Salary Calculator

Scale a full-time salary using the weekly hours and paid weeks in the proposed schedule.

Pro-rata annual salary—
Average per month—
Pay per paid week—
Schedule detail

How the salary scales

Full-time salary—
Pro-rata factor—
Full-time hourly equivalent—
Your annual paid hours—
—

—

Formula

Pro-rata salary = full-time salary × (your weekly hours ÷ full-time hours) × (your paid weeks ÷ full-time paid weeks).

Method

Weekly hours and paid weeks are separate adjustments.

A 30-hour schedule against a 40-hour full-time week is 75% before any part-year adjustment. If both roles cover the same paid weeks, only the hours ratio changes the annual salary.

Read the hourly versus salary comparison →

Contract check

Confirm what the quoted salary covers.

Employers may quote a full-time equivalent, an actual part-time salary or a term-time figure. Ask which number is shown and whether paid leave is already included.