Calculation guide
How it works
Use the full-time annual salary for the same role, then multiply it by your share of paid weekly hours. Enter contracted paid hours for both schedules, excluding unpaid breaks. This calculator assumes the same basic rate and an all-year contract. Monthly amounts are annual pay divided by 12; weekly and hourly figures use a stated 52-week comparison convention.
part-time annual salary = full-time annual salary × (part-time hours / full-time hours)Worked example
For £30,000 a year at 37.5 hours a week, working 22.5 hours gives 22.5 / 37.5 = 0.6 FTE. Annual gross pay is £18,000, or £1,500 per month before deductions.
Frequently Asked Questions
Is this my take-home pay?
No. This is gross basic pay before deductions. Tax, National Insurance, pension contributions and other deductions are not calculated.
Can I use days instead of hours?
A days ratio works only when paid hours per day are equal. For three 7.5-hour days, enter 22.5 weekly hours. Four compressed days totalling the full-time hours do not reduce the salary in this model.
What does 0.6 FTE mean?
FTE means full-time equivalent. Here it is your weekly hours divided by the full-time weekly hours. A ratio of 0.6 means 60% of that full-time schedule and basic salary.
Does the weekly figure predict my payslip?
Not necessarily. It is annual gross pay divided by 52 for comparison. Four-weekly pay, calendar-based payroll and partial periods can differ. Check the calculation basis in your contract.