Calculator / Part-Time
Part-Time Holiday Entitlement Calculator UK 2026
Calculate your pro-rata holiday entitlement based on the days or hours you work each week. Includes worked examples, bank holiday fairness rules, and the hours-based method.
Updated 11 April 2026
Part-Time Calculator
Your part-time entitlement
16.8 days
134.4 hours
5.6 x 3 = 16.8 days
The Pro-Rata Formula
Part-time workers receive the same 5.6 weeks of holiday as full-time workers, but scaled to match their working pattern. The Part-time Workers (Prevention of Less Favourable Treatment) Regulations 2000 make it unlawful to treat part-time workers less favourably than comparable full-time colleagues.
Pre-Calculated Reference Table
| Days/week | Holiday days | Hours (8h day) | Hours (7.5h day) |
|---|---|---|---|
| 1 | 5.6 | 44.8 | 42 |
| 1.5 | 8.4 | 67.2 | 63 |
| 2 | 11.2 | 89.6 | 84 |
| 2.5 | 14 | 112 | 105 |
| 3 | 16.8 | 134.4 | 126 |
| 3.5 | 19.6 | 156.8 | 147 |
| 4 | 22.4 | 179.2 | 168 |
| 4.5 | 25.2 | 201.6 | 189 |
| 5 | 28 | 224 | 210 |
Capped at 28 days. Workers doing 6 or 7 days per week still receive a maximum of 28 days.
Worked Examples
3 days per week (retail worker, Mon/Wed/Fri)
5.6 x 3 = 16.8 days per year
If each shift is 8 hours, that is 16.8 x 8 = 134.4 hours. The 16.8 days should be rounded up to 17 days in practice.
2.5 days per week (care worker, 2 full days + 1 half day)
5.6 x 2.5 = 14 days per year
Because the half day is shorter, calculating in hours is often more accurate. If you work 20 hours per week: 20 x 5.6 = 112 hours of holiday.
4 days per week (office worker, 4-day contract)
5.6 x 4 = 22.4 days per year
This is distinct from compressed hours, where you work full-time hours over 4 days. A 4-day part-time contract means fewer total weekly hours.
Irregular pattern (different hours on different days)
Weekly hours x 5.6 = annual holiday hours
If you work 6 hours Monday, 8 hours Wednesday, and 4 hours Friday (18 hours total), your entitlement is 18 x 5.6 = 100.8 hours per year.
Bank Holidays and Part-Time Workers
The "Monday Problem"
Most bank holidays in England and Wales fall on a Monday. If you work Tuesday to Thursday, you never get a bank holiday off while your full-time colleagues get 8 days. This is potentially unlawful less favourable treatment under the Part-time Workers Regulations 2000.
The fair solution is for employers to either give you equivalent time off on your working days, add the pro-rata bank holiday entitlement to your annual leave total, or express all entitlement in hours (the simplest approach). If your employer includes bank holidays in the 28-day total and you never work on bank holiday days, you should receive the equivalent time off elsewhere.
Hours-Based Calculation
When your working days are not all the same length, calculating in hours is more accurate and avoids confusion. The formula is straightforward:
For a worker doing 24 hours per week across varying shifts: 24 x 5.6 = 134.4 hours of annual holiday. This is the same entitlement regardless of how those 24 hours are spread across the week.
Rounding Rules
There is no legal requirement for employers to round up holiday entitlement. However, employers must not round down below the statutory minimum. In practice, most employers round up to the nearest half-day or full day for simplicity.
For example, 16.8 days is commonly rounded up to 17 days. If your employer rounds down to 16 days, they are giving you less than the statutory minimum and you should raise this with them.