Fte Calculator Uk
Determine your Full-Time Equivalent ratio instantly
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UK FTE Calculator
FTE (Full-Time Equivalent) is a standardised metric that expresses a part-time worker's hours as a decimal proportion of full-time hours. An FTE of 1.0 means full-time, 0.5 means half-time, and 0.6 means three-fifths of full-time. UK employers, particularly in the public sector, use FTE extensively for payroll, workforce planning, and budget allocation.
FTE Conversion Table
| Your Hours | FT Standard (37.5h) | FTE | Salary at £30k FTE |
|---|---|---|---|
| 37.5 | 37.5 | 1.00 | £30,000 |
| 30 | 37.5 | 0.80 | £24,000 |
| 22.5 | 37.5 | 0.60 | £18,000 |
| 18.75 | 37.5 | 0.50 | £15,000 |
| 15 | 37.5 | 0.40 | £12,000 |
| 7.5 | 37.5 | 0.20 | £6,000 |
How FTE Is Used in Practice
FTE serves multiple purposes beyond salary calculation: Workforce planning — a team of 10 employees at various FTEs might total 7.2 FTE, meaning the team has the capacity of 7.2 full-time workers. Budget allocation — training budgets, equipment allowances, and departmental costs are often allocated per FTE. Reporting — NHS workforce statistics, DfE school census data, and ONS employment figures all use FTE to standardise comparisons.
For salary-to-FTE or FTE-to-salary conversions, use this calculator. To understand how FTE affects your take-home pay, try the take-home calculator. For calculating FTE salary specifically, see our FTE salary guide.
How to Use the Fte Calculator Uk
Using our fte calculator uk is straightforward. Follow these steps to get accurate results for your situation:
- Enter your full-time salary — This is the annual salary for the equivalent full-time role, before any deductions. You'll find this on the job advert or your contract.
- Set the full-time hours — The standard working week for the role. Most UK employers use 37.5 or 40 hours per week.
- Enter your actual hours — Your contracted weekly hours. This is the number you actually work.
- Click Calculate — The fte calculator uk displays your results instantly, with annual, monthly, weekly, daily, and hourly breakdowns.
Worked Example: Fte Calculator Uk
Here's a practical example. An NHS band 5 nurse works 30 hours per week where the full-time contract is 37.5 hours.
FTE calculation: 30 ÷ 37.5 = 0.8 FTE (or 80%)
If the full-time salary for band 5 is £29,970:
- Pro rata salary: £29,970 × 0.8 = £23,976
- Pro rata holiday: 28 days × 0.8 = 22.4 days
- Pro rata bank holidays: 8 days × 0.8 = 6.4 days
The FTE ratio affects everything proportionally — salary, holiday, pension contributions, and even London weighting if applicable. Use our fte calculator uk above to calculate your own FTE.
Tips for Using This Calculator
- Always use gross salary: Enter the salary before tax and deductions — the fte calculator uk works with gross figures.
- Check your contract: Your employment contract should state your full-time equivalent hours. Common UK standards are 35, 37, 37.5, and 40 hours per week.
- Know your rights: Under the Part-time Workers Regulations 2000, part-time employees must receive the same hourly rate, holiday entitlement (pro rata), and benefits as full-time colleagues.
- Tax personal allowance: For 2025/26, the first £12,570 of earnings is tax-free. If your pro rata salary falls below this, you pay no income tax at all.
- National Insurance: Employee NI is 8% on earnings between £12,570 and £50,270 (2025/26 rates). Check HMRC NI rates for the latest figures.
Pro Rata Holiday Entitlement
Under the Working Time Regulations 1998, all UK workers are entitled to a minimum of 5.6 weeks' paid holiday per year (28 days for full-time). If you work part-time, your entitlement is calculated pro rata based on your actual hours or days worked.
| Days Worked/Week | FTE Ratio | Statutory Days/Year | Bank Holidays (pro rata) |
|---|---|---|---|
| 5 days (full-time) | 1.0 | 28 days | 8 days |
| 4 days/week | 0.8 | 22.4 days | 6.4 days |
| 3 days/week | 0.6 | 16.8 days | 4.8 days |
| 2.5 days/week | 0.5 | 14 days | 4 days |
| 2 days/week | 0.4 | 11.2 days | 3.2 days |
Holiday entitlement is always rounded up — never down — when the result is not a whole number, per ACAS guidance on holiday entitlement. Bank holidays may be included in or added on top of your statutory 28 days, depending on your contract.
All calculations on this page follow ACAS pro rata pay guidelines and are consistent with the UK Employment Rights Act 1996. Tax figures use HMRC 2025/26 rates. The April 2025 National Living Wage of £12.21/hour is applied where relevant.
Related Salary Calculators
Our fte calculator uk is just one of the tools available on ProRataCalculator. You may also find these useful: pro rata calculator, term-time salary calculator, overtime calculator.
Last updated: February 2026. Verified against HMRC 2025/26 tax rates and April 2025 National Living Wage (£12.21/hour).
Frequently Asked Questions
FTE stands for Full-Time Equivalent. It is a unit that measures the workload of an employee compared to a full-time role. An FTE of 1.0 = full-time, 0.5 = half-time, etc.
Divide your actual weekly hours by the full-time hours. For example: if you work 22.5 hours and full-time is 37.5, your FTE = 22.5 ÷ 37.5 = 0.6 FTE.
FTE is used to calculate pro rata salary, holiday entitlement, pension contributions, and for workforce planning. It ensures fair and proportional treatment of part-time workers.
Typically yes. If full-time is 5 days, then 0.8 FTE represents 4 days per week. However, it could also mean 5 shorter days — FTE is based on hours, not days.