By Intious · Updated September 11, 2026
Weekly hours = FTE × full-time weekly hours. On a 40-hour baseline, 0.5 FTE is 20 hours, 0.8 FTE is 32 hours and 0.9 FTE is 36 hours.
FTE percentage-to-hours chart
| FTE | 40-hour week | 37.5-hour week | 35-hour week |
|---|---|---|---|
| 0.05 | 2 hours | 1.875 hours | 1.75 hours |
| 0.10 | 4 hours | 3.75 hours | 3.5 hours |
| 0.25 | 10 hours | 9.375 hours | 8.75 hours |
| 0.50 | 20 hours | 18.75 hours | 17.5 hours |
| 0.60 | 24 hours | 22.5 hours | 21 hours |
| 0.75 | 30 hours | 28.125 hours | 26.25 hours |
| 0.80 | 32 hours | 30 hours | 28 hours |
| 0.90 | 36 hours | 33.75 hours | 31.5 hours |
| 1.00 | 40 hours | 37.5 hours | 35 hours |
Convert weekly FTE hours to annual hours
For a simple 52-week capacity conversion, multiply weekly hours by 52. On a 40-hour baseline, 0.8 FTE is 32 weekly hours and 1,664 annual scheduled hours. This is not the same as actual worked hours after holidays, leave or other unavailable time.
Use the correct full-time baseline
FTE is a ratio, so the baseline is part of the answer. Ask whether the organization defines a full-time schedule as 40, 37.5, 35 or another number of hours. Use the same period on both sides of the calculation.
Frequently asked questions
How many hours is 0.9 FTE?
It is 36 hours per week on a 40-hour baseline, 33.75 hours on a 37.5-hour baseline, or 31.5 hours on a 35-hour baseline.
How many hours is 0.5 FTE?
It is half of the full-time schedule: 20 hours when full time is 40 hours, or 18.75 hours when full time is 37.5 hours.
Is 80% FTE the same as four days?
Only if four normal workdays equal 80% of the chosen full-time week. FTE measures hours, not a guaranteed number or placement of workdays.
Can a person have more than 1.0 FTE?
Many workforce reports cap one person's assignment at 1.0 FTE even when overtime is worked. Confirm the reporting definition before including overtime as extra capacity.
Calculate a mixed team
Add groups of people and weekly hours, then compare headcount with FTE.
Use the FTE & Headcount Calculator