Understanding full-time equivalent (FTE): A comprehensive guide to calculations and applications

Full-time equivalent (FTE) is a way to convert the working hours of part-time, contract, or seasonal hours workers into the equivalent of a full-time worker, allowing you to see the total number of working hours contributed across the company. 

Understanding FTE allows you to allocate resources effectively, manage workload distribution, and assess staffing needs. FTE is used across HR, business, and finance to calculate labour costs, plan budgets, and support effective workforce planning.

FTE plays a key role in HR decision-making, such as optimising headcount, managing labour costs and ensuring compliance with employment laws. FTE also plays a role in making informed decisions about promotions, dismissals and training programs.

HR managers can apply FTE calculations in various contexts:

• Salary determination: To calculate fair salaries for part-time employees.

• Resource allocation: To effectively plan and distribute resources across projects.

• Performance analysis: To assess team productivity and optimise workforce distribution.

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Let's say your company considers a full-time workweek to be 40 hours. In your team, you have Jennifer who works 40 hours per week, and you have 3 part-time employees: Daniel, who works 5 hours per week, Nicole, who works 15, and Bobby, who works 20.

Now, Jennifer is a full-time employee, so her FTE is 1.0. Daniel, Nicole and Bobby do not work a full 40 hours a week, and to calculate the full-time equivalent of the hours they work, you must divide each employee’s working hours by the company’s hours for a full-time workweek.

FTE calculations are used in different ways. Sometimes you’ll want to know how many FTEs you employ across the company, but in others you need to calculate what the FTE of a part-time role is. Here’s how to arrive at the FTE figures you need in different scenarios.

To calculate your company’s total full-time equivalent you need two figures: the total hours worked by all employees and the figure that represents your standard full-time hours.

The calculation for FTE is: 

• FTE = Total hours worked by all employees ÷ standard full-time hours 

If you’re planning to hire, understanding the FTE of the role allows you to be transparent with potential candidates about how many hours they’ll work. It’s also easier for you to work out what the salary for the role is, as you can use the FTE to pro-rata the salary accurately.

To find out what an individual role’s FTE is, use this calculation: 

• Individual role FTE = Total hours worked ÷ standard full-time hours

Not every business has a straightforward mix of full-time and part-time workers. If you deal with shift workers, annualised hours contracts, a 9-day fortnight, or hire across different countries, the calculations are slightly different.

To calculate the FTE of shift workers: 

• FTE = Total hours worked by all shift employees ÷ standard full-time hours for one employee

To calculate the FTE of annualised hours workers: 

• FTE = Total annual hours ÷ standard full-time annual hours

Calculating the FTE of employees that work a 9-day fortnight depends on whether they work compressed or reduced hours. A full-time employee on a compressed hours schedule still equals 1 FTE. If you run a reduced hours schedule, the calculation is: 

• FTE = Total fortnightly hours of work ÷ Standard full-time fortnightly hours

To calculate your company’s FTE across different countries, you first need to calculate the FTE of all employees in each country or region where the standard full-time hours differ. Next, add these figures together to find your global FTE.

Here’s an example of calculating the global FTE of a company with employees in the UK, Germany, and Japan: 

• UK FTE = (20 + 35 + 25) ÷ 37.5 = 2.13

• Germany FTE = (35 + 35 + 15 + 25) ÷ 35 = 2.86

• Japan FTE = (40 + 25 + 25) ÷ 40 = 2.25

• Global FTE = 2.13 + 2.86 + 2.25 = 7.24

It’s easier to understand your company’s total working hours or productivity measured in FTE, but in some cases it’s helpful to know how many hours an FTE figure represents—like when you’re recruiting or considering a flexible working request.

To calculate FTE in hours:

• Hours = Full time equivalent figure x standard full-time hours

For example, if the business’ standard full-time hours are 37.5 per week, an employee on a 0.8 FTE contract works 30 hours per week.

An electronics company has a production team of five people. Three of them work full-time (40 hours per week each) and the rest work 10 and 5 hours in total.

If you want to calculate the FTE, you first need to understand the total hours worked by all employees: 

• Total hours worked by all employees = 40 + 40 + 40 + 10 + 5 = 135

Next, divide this figure by the standard full-time hours at this company—40 hours: 

• FTE = 135 ÷ 40 = 3.375 (or 3.8 rounded up)

The FTE of this production team is 3.8, meaning that the five workers contribute the same amount of working hours as nearly 4 people (3.8) working in a full-time role. 

Using these metrics, the company can then ensure it has the right number of employees in place to meet customer demand, avoid inefficiencies, and optimise labour costs during peak periods.

Understanding and calculating FTE is crucial for HR managers to improve organisational efficiency and make informed decisions. FTE provides a standardised way to measure workforce size, allocate resources effectively, and manage workload distribution.

Personio offers a host of valuable reporting and analytics features that simplify HR management, improve reporting accuracy, and support compliance efforts so that you can have access to critical HR KPIs, such as FTE, at your fingertips.

Choose Personio for: 

• People analytics that includes FTE-based people insights

• Accurate, easy-to-use time tracking and absence management

• Workforce planning tools that allow you to adapt to changing needs

• AI assistant that surfaces data insights and answers employee questions about FTE

Personio enables you to centralise HR data in one platform, then use it for everyday HR tasks and long-term decision-making. With calculations and reporting taken care of automatically, HR teams are freed up to focus on strategic work.

There’s no set standard for full-time hours in the UK, but in most businesses it’s between 35 and 40 hours per week. The Working Time Regulations 1998 introduced a maximum of an average of 48 hours per week, but there’s the opportunity for employees to sign an opt-out agreement to go above this.

Headcount is the total number of employees, while FTE is the equivalent number of full-time employees needed to perform the same amount of work. FTE takes into account the hours worked by part-time and contract employees, providing a more accurate representation of the organisation's labour costs and workload distribution.

FTE is a unit of measurement that represents the equivalent number of full-time employees needed to perform the same amount of work. FTE 1.0 means a full-time employee, 0.75 means three-quarters of a full-time workweek, and 0.5 means half of a full-time workweek.

To adjust FTE calculations for different full-time definitions, you need to determine the standard workweek for your organisation. Once you have this information, divide the average weekly hours worked by an employee by the standard workweek hours to calculate their FTE.

For example, if the standard workweek is 40 hours and an employee works 30 hours per week, their FTE would be 0.75. This adjustment ensures that FTE calculations accurately reflect the actual workload and staffing needs based on your organisation's specific definition of full-time employment.