Pro Rata Holiday Calculator
Use this UK pro rata holiday calculator for statutory or company holiday entitlement. Statutory days = working days per week × 5.6, capped at 28. Statutory hours = weekly hours × 5.6. Company pro rata = full-time holiday days × part-time days ÷ full-time days. Estimates only.
UK pro rata holiday calculator covering the 5.6-week statutory minimum (days or hours) and pro rata company holiday allowances above the minimum. Useful for part-time, term-time and reduced-hours workers.
Note: Estimates only. Holiday entitlement depends on your contract terms, working pattern, start date and employer policy. Irregular-hours and part-year workers should use the 12.07% accrual method (April 2024 rules).
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What this calculator does
Estimates UK statutory paid leave in days or hours per year, or pro rata company holiday allowance, from working days per week, weekly hours, full-time days and full-time allowance.
Who it is for
UK part-time, term-time and reduced-hours workers, HR teams checking pro rata leave on flexible-working requests, and employees comparing a contractual offer against the statutory minimum.
How to use it
Choose statutory (days), statutory (hours) or company allowance. Enter working days per week or weekly hours. For the company mode, also enter the full-time days per week and the full-time annual holiday allowance. Optionally enter average hours per day to estimate days as hours.
How the calculation works
Statutory days = working days per week × 5.6, capped at 28. Statutory hours = weekly hours × 5.6. Company pro rata holiday = full-time holiday days × part-time days ÷ full-time days. The 28-day cap applies to days-based statutory entitlement only.
Worked example
Statutory, days: 3 working days × 5.6 = 16.8 days. Statutory, hours: 22.5 weekly hours × 5.6 = 126 hours. Company allowance: 28 full-time days × 3 ÷ 5 = 16.8 days for a 3-day pattern.
Assumptions and limitations
- UK statutory minimum: 5.6 weeks per leave year, capped at 28 days
- Assumes regular weekly hours and days — irregular-hours and part-year workers use 12.07% accrual
- Bank holidays may or may not be inside the 5.6 weeks — depends on your contract
- The calculator does not allocate carry-over, sickness adjustments or first-year accrual rules
- This is general guidance, not legal advice — see ACAS and GOV.UK for definitive rules
Frequently asked questions
What is the UK statutory holiday minimum?
5.6 weeks of paid leave per year, which works out at 28 days for a 5-day week. The statutory cap is 28 days even if you work more than 5 days.
How is pro rata holiday calculated for part-time workers?
Multiply your working days per week by 5.6 for days-based entitlement, or multiply weekly hours by 5.6 for hours-based entitlement. For company schemes that exceed the statutory minimum, multiply the full-time allowance by your days and divide by the full-time days.
Does pro rata holiday include bank holidays?
It depends on your contract. The 5.6 weeks can include bank holidays — they do not have to be given in addition.
Are irregular hours handled differently?
Yes — from April 2024 the UK uses 12.07% accrual for irregular-hours and part-year workers. This calculator covers the regular-hours case.
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Sources and references
GOV.UK: Holiday entitlement (5.6 weeks, 28-day cap). GOV.UK: Calculating holiday pay for workers without fixed hours or pay. ACAS: Holiday entitlement and pay guidance. General reference — not legal advice.
Last updated
Last reviewed: 2026-05-20.