What is FTE?
FTE stands for Full-Time Equivalent. It is a way to measure employee workload against a full-time role. In simple terms, 1.0 FTE means one full-time employee, while 0.5 FTE means someone working half those hours.
Since full-time hours can differ between businesses, employers use FTE to standardise staffing, salaries, budgets, and workforce planning, as recognised in the UK’s Working Time Regulations guidance.
How is FTE Calculated?
FTE calculation is fairly simple once you know your business’s full-time weekly hours. You divide the total hours worked by all employees by the standard full-time hours.
FTE = Total employee hours worked ÷ Full-time weekly hours
FTE calculation example
For example, if your company treats 40 hours per week as full-time:
- Employee A works 40 hours = 1.0 FTE
- Employee B works 20 hours = 0.5 FTE
- Employee C works 10 hours = 0.25 FTE
Together, that equals 1.75 FTE.
According to GOV.UK guidance on working hours, UK employees generally cannot work more than an average of 48 hours a week unless they opt out.
What do FTE numbers actually mean?
FTE numbers simply show how much of a full-time role someone works. The closer the number is to 1.0, the closer the employee is to full-time hours. Handy for HR teams. Slightly less handy for anyone who hates spreadsheets.
| FTE value |
What it means |
Example |
| 1.0 FTE |
Full-time employee |
40 hours per week |
| 0.8 FTE |
Reduced full-time hours |
32 hours per week |
| 0.5 FTE |
Half of a full-time role |
20 hours per week |
| 0.25 FTE |
Quarter-time role |
10 hours per week |
Exact hours can vary between businesses depending on their standard working week.
Why FTE matters for UK businesses
FTE helps businesses understand the real size and capacity of their workforce, especially when teams include a mix of full-time, part-time, freelance, or contract staff.
Instead of simply counting employees, FTE shows how many full-time workloads your business actually has.
UK employers commonly use FTE to:
- Compare staffing costs accurately
- Manage workloads across teams
- Calculate salaries and resource needs
It is also useful for reporting and workforce planning, particularly for growing SMEs juggling flexible working arrangements and hybrid teams.
FTE vs headcount - What's the difference?
Headcount tells you how many people work for your business. FTE tells you how much work those employees actually cover. A company may have 10 employees on paper, but if several work part-time, the total workforce could equal just 7.5 FTE.
| Scenario |
Headcount |
FTE |
| 5 full-time employees working 40 hours |
5 |
5.0 |
| 2 part-time employees working 20 hours each |
2 |
1.0 |
| Total workforce |
7 employees |
6.0 FTE |
