FTE Calculator
Convert your mixed workforce into FTE (full-time equivalent) numbers. Enter full-time headcount and total part-time hours — get the FTE figure used for budgeting, ACA compliance, grants, and workforce planning, with the special ACA math explained.
Quick answer: FTE = full-time employees + (total part-time weekly hours ÷ full-time weekly hours). A clinic with 20 full-timers plus part-timers working 120 combined hours at a 40-hour standard has 20 + 3 = 23.0 FTE — even though headcount is 26.
What FTE Means
Full-time equivalent expresses workload as multiples of one full-time schedule, separating capacity from headcount. Two half-time employees are two people but 1.0 FTE. The distinction matters everywhere money or compliance meets a mixed workforce: budgets scale with FTE, not bodies; grants and government reports demand FTE; HR ratios computed per head lie whenever part-timers exist.
FTE Formula
FTE = Full-Time Employees + (Total Part-Time Hours per Week ÷ Full-Time Weekly Hours)
Individual FTE = a person's weekly hours ÷ the full-time standard: 32 hours at a 40-hour company = 0.8 FTE. Annual method: total annual hours ÷ 2,080.
Worked Examples
Example 1 — mixed clinic. 20 full-timers (40 hrs) + six part-timers totaling 120 hrs/week: 120 ÷ 40 = 3.0, so 23.0 FTE from 26 people.
Example 2 — budgeting a team. A support function needs 7.5 FTE of coverage. Options: 7 full-time + one 20-hour part-timer (7.5 FTE, 8 heads) or 6 full-time + three 20-hour (7.5 FTE, 9 heads) — same capacity, different overhead, scheduling flexibility, and benefits cost.
Example 3 — 0.8 FTE offer. "0.8 FTE role" at a 40-hour company = 32 hours/week, with salary and leave usually pro-rated at 80%. A ₹10L full-time package becomes ₹8L.
Common FTE Values
| Weekly hours (40-hr standard) | FTE | Typical label |
|---|---|---|
| 40 | 1.00 | Full-time |
| 32 | 0.80 | 4-day week |
| 30 | 0.75 | ACA full-time threshold* |
| 20 | 0.50 | Half-time |
| 10 | 0.25 | Quarter-time |
*The ACA counts 30+ hours/week as full-time for employer-mandate purposes — a different definition from your company's 40-hour standard. Both are correct in their own contexts; mixing them is the classic FTE error.
ACA FTE: The Compliance Calculation
For the US Affordable Care Act employer mandate, the math changes: employees at 30+ hours/week (130+/month) count as full-time outright, and remaining part-time hours are totaled and divided by 120 per month to get FTEs. If full-time + FTEs ≥ 50 on average, you're an Applicable Large Employer and must offer qualifying coverage. Example: 40 full-timers + 25 part-timers at 60 hrs/month each = 40 + (1,500 ÷ 120) = 52.5 → ALE. Companies hovering near 50 should compute this monthly with payroll data, not annual estimates — the seasonal-worker exception and monthly averaging rules reward precise tracking.
FTE in Budgeting and Workforce Planning
- Position budgeting: departments get FTE allocations, not headcount — 10.0 FTE can be 10 full-timers or 8 + 4 halves, letting managers trade flexibility against coordination overhead.
- Loaded cost per FTE: salary × 1.25–1.4 (payroll taxes + benefits — see the payroll tax calculator). Note benefits often don't scale linearly: two 0.5 FTEs can cost more than one 1.0 FTE where each gets benefits.
- Capacity planning: project managers discount nominal FTE by 15–25% for meetings, leave, and admin — 10 FTE of engineers is 7.5–8.5 FTE of project throughput. Feed real availability from the working days calculator.
FTE as the Denominator of Honest HR Metrics
Per-head metrics distort wherever part-time work exists. Use FTE as the denominator for: revenue per employee (a retailer with heavy part-time staffing looks artificially unproductive per head), absenteeism rate (part-timers' absence days weigh differently), training spend, and span-of-control ratios. Turnover, in contrast, is conventionally computed per person — a 0.5 FTE leaving is still one exit (see the turnover rate calculator).
FTE in Job Offers and Academia
Universities, hospitals, and public agencies advertise roles in FTE ("0.6 FTE lecturer"). What to check before accepting: which hours base the percentage applies to (0.8 of 40 ≠ 0.8 of 37.5), whether benefits have FTE eligibility floors (0.5 FTE minimum is common), how leave and holidays pro-rate, and what happens to the fraction over time — FTE-creep, doing 1.0 work at 0.8 pay, is the known failure mode of fractional roles. Convert the offer to an effective hourly figure with the salary to hourly calculator.
Frequently Asked Questions
What does FTE mean?
Full-time equivalent — workload expressed as multiples of a full-time schedule. A 20-hour-per-week employee at a 40-hour company is 0.5 FTE; two of them equal one full-time capacity.
How do I calculate FTE?
Full-time headcount + (total weekly part-time hours ÷ full-time weekly hours). 20 full-timers plus 120 part-time hours at a 40-hour standard is 23.0 FTE.
What is 0.8 FTE in hours?
32 hours per week at a 40-hour standard — the typical 4-day week. Salary and leave usually pro-rate to 80% of full-time.
How is FTE calculated for ACA compliance?
Employees at 30+ hours/week count as full-time; remaining part-time monthly hours are divided by 120 for FTEs. Fifty or more combined on average makes you an Applicable Large Employer.
What is the difference between FTE and headcount?
Headcount counts people; FTE counts capacity. 26 people including part-timers might be 23 FTE. Budgets and compliance use FTE; badges and laptops use headcount.
How many hours is 1.0 FTE?
Whatever your organization defines as full-time — usually 40 hours/week (2,080/year), sometimes 37.5 or 35. The ACA separately uses 30 for its full-time definition.
How do I calculate FTE for a year?
Total hours worked in the year ÷ 2,080 (or your annual full-time hours). An employee who worked 1,040 hours is 0.5 FTE for the year.
Do 1.0 FTE salaries pro-rate for fractional roles?
Yes — a 0.6 FTE appointment typically pays 60% of the full-time salary with pro-rated leave. Check which weekly-hours base the fraction uses and the benefits eligibility floor.
Why do grants and government reports require FTE?
FTE normalizes effort across different schedules, making funding comparable: "2.0 FTE research staff" means the same capacity whether delivered by two full-timers or four halves.
Does overtime change FTE?
Standard FTE caps individuals at 1.0 — overtime is a cost line, not extra FTE. Sustained overtime above capacity is, however, the classic signal that budgeted FTE is too low.
✓ Formula verified • Last updated: July 10, 2026