Full-time Equivalent (FTE)

Full-time Equivalent (FTE) is a unit of measurement that converts the hours worked by different people into a standardized full-time workload, making it possible to express total workforce capacity as a single comparable number.

One FTE equals one person working a standard full-time week, typically 40 hours. A person working 20 hours a week represents 0.5 FTE. This lets you talk about staffing capacity in consistent terms even when your team has a mix of schedules, contract types, and availability.

How FTE is calculated

The formula is simple: divide total hours worked by the number of hours in a standard full-time week. If four people each work 10 hours a week, that’s 40 hours total, which equals 1.0 FTE. If your full-time week is 40 hours and a part-timer works 30, they count as 0.75 FTE.

FTE measures workload, not headcount. Ten part-time workers might represent fewer than two FTEs depending on their hours. That distinction matters when you’re trying to assess whether you have enough coverage, not just enough people.

Where FTE comes up

FTE is most common in budgeting and workforce planning. Finance teams use it to estimate labor costs, and operations teams use it to check whether current staffing levels match expected workload. It also appears in government reporting, grant applications, and compliance contexts where raw headcount doesn’t capture the full picture.

For teams with mixed schedules, including full-timers, part-timers, and people picking up occasional shifts, FTE gives you a single number that reflects total available capacity rather than a list of individual arrangements.

Common challenges with FTE

FTE calculations get complicated when hours vary week to week, which is typical in shift-based work. A fixed snapshot can misrepresent actual capacity. A rolling average over several weeks gives a more accurate picture.

It’s also worth separating FTE from productivity. Two people at 0.5 FTE each don’t automatically deliver the same output as one full-time person. Role, context, and continuity all affect that.

How Zelos helps

Zelos tracks hours worked across shifts and team members, giving you the raw data needed to calculate FTE without manual spreadsheet work. When your team has varying availability and schedules, having accurate hours in one place makes it straightforward to assess coverage and plan for upcoming demand.