Definition · Workforce planning and analytics
Full-Time Equivalent
Definition
Full-time equivalent (FTE) is a unit that converts all hours worked or scheduled into the number of full-time employees those hours represent. One FTE equals one person working a full-time schedule, commonly 40 hours a week or 2,080 hours a year. Two employees working 20 hours a week each equal 1.0 FTE.
Also called: FTE, Full time equivalent, Whole-time equivalent, WTE
Formula
FTE = Total hours worked (or scheduled) in the period ÷ Full-time hours for one employee in the same period
- Total hours
- All paid hours for the group in the period. Decide whether to count scheduled, worked or paid hours and stay consistent.
- Full-time hours
- The employer's standard full-time schedule for the period: for example 40 a week, about 173 a month, or 2,080 a year at 40 hours a week.
Worked example
A team has 6 full-time agents at 40 hours a week, 4 part-timers at 24 hours and 3 at 16 hours. Total weekly hours = 240 + 96 + 48 = 384. FTE = 384 ÷ 40 = 9.6 FTE, from a headcount of 13.
How to calculate FTE
Pick three things before you calculate: the period (week, month, year), what full-time means in your organization (40, 37.5 or 35 hours a week), and which hours you count.
- Scheduled hours are best for capacity and staffing plans.
- Paid hours match the payroll budget and include paid time off.
- Worked hours exclude paid leave and suit productivity analysis.
Then divide the total by the full-time standard for the period. For annual FTE using a 40-hour week, the standard is 2,080 hours (40 × 52). A part-time employee who works 1,040 hours in the year is 0.5 FTE.
For positions rather than people, assign an FTE value when the position is created: a 30-hour role on a 40-hour standard is a 0.75 FTE position, even if it is vacant.
FTE vs headcount
Headcount counts people. FTE counts capacity. The two diverge as soon as you have part-time, seasonal or variable-hour staff.
A grocery chain store might employ 85 people but only 52 FTE because most cashiers and stockers work part-time. Use headcount for anything that scales with people: recruiting volume, onboarding, benefits enrollment, uniforms, laptops, licenses, manager span of control. Use FTE for anything that scales with hours: labor budget, staffing requirements, productivity ratios like revenue per FTE, and comparing teams with different part-time mixes.
In headcount planning, you typically need both numbers for every team: FTE to check you have enough capacity, and headcount to know how many people to hire.
FTE in contact center and capacity planning
Contact centers use FTE everywhere. Capacity planning works out the FTE required to answer forecast volume at a target service level, then adds shrinkage. For example, if Erlang-based modeling says 48 agents must be on the phones on average, and shrinkage is 32%, the center needs 48 ÷ (1 − 0.32) = about 70.6 FTE scheduled. If most agents are full-time, that is about 71 people; with a mix of 30-hour part-timers, it is more.
That difference matters for recruiting. A plan that needs 20 additional FTE might mean 20 full-time hires or 27 part-time hires at 30 hours. Recruiters should always ask which.
FTE under US law
FTE has specific legal meanings in some US rules, and they do not always match your internal definition.
- Affordable Care Act. For the employer mandate, a full-time employee averages at least 30 hours of service per week, or 130 hours a month. To decide whether an employer has 50 or more full-time employees including full-time equivalents and is therefore an applicable large employer, the IRS adds full-time employees to a figure for part-time hours: total monthly hours of part-time employees (counting no more than 120 per person) divided by 120.
- Other thresholds. Laws like FMLA (50 employees) and Title VII (15 employees) use their own counting rules, generally based on employees on the payroll rather than FTE.
These are informational summaries. The rules have detailed exceptions and vary by law and state, so confirm with counsel or your benefits advisor when a threshold matters.
Common mistakes
- Mixing full-time standards. If one site uses 37.5 hours and another 40, convert to one standard before comparing.
- Counting paid leave inconsistently. Including PTO in one month and not the next makes FTE trends meaningless.
- Using FTE for recruiting targets. Recruiters hire people, not fractions. Convert to headcount by expected schedule.
- Confusing internal FTE with ACA counts. Your planning definition and the legal test can differ, especially around the 30-hour line.
- Ignoring overtime. Teams that run heavy overtime can show FTE above headcount. That is a capacity warning, not an efficiency win.
Using FTE in labor cost analysis
FTE makes cost comparisons fair. Cost per FTE, revenue per FTE and contacts per FTE strip out the effect of part-time mix, so you can compare a site that runs mostly part-time with one that runs mostly full-time. Pair FTE with labor cost data to see where overtime, premium pay or contractor hours are pushing up cost per unit of capacity.
Frequently asked questions
What does FTE mean?
FTE stands for full-time equivalent. It expresses hours worked or scheduled as a number of full-time employees, so 1.0 FTE equals one person working a full-time schedule and 0.5 FTE equals half of one.
How do you calculate FTE?
Add the total hours worked or scheduled by all employees in a period, then divide by the number of hours a full-time employee works in the same period, such as 40 per week or 2,080 per year.
What is the difference between FTE and headcount?
Headcount is the number of people employed. FTE is the amount of full-time capacity those people represent. Ten employees each working 20 hours a week are 10 headcount but 5 FTE on a 40-hour standard.
Is 32 hours considered full time?
There is no single US definition. Many employers use 40 hours for internal FTE, some use 35 or 37.5, and the ACA employer mandate treats 30 hours a week or more as full-time. Check which definition the policy or law in question uses.
How many hours is 1 FTE per year?
On a 40-hour week, 1 FTE is 2,080 hours a year (40 × 52). Organizations using a 37.5-hour week use 1,950 hours.