Full-time equivalent calculator for FTE staffing capacity Combine full-time employees, part-time employees, and extra straight-time coverage hours to calculate total FTE, monthly and annual hours, headcount-to-FTE mix, and the staffing gap against your target FTE plan.
Assumptions
FTE is calculated from straight-time hours only using the full-time hours-per-week standard and the working weeks entered. This reflects staffing capacity, not legal worker classification, overtime rules, or benefit eligibility.
Result
24.38 total FTE
30 people scheduled for 975 straight-time hours per week convert to 24.38 FTE on the current basis, or 4,225 average hours per month across the planning year.
Full-time FTE
18
Part-time FTE
6
Other hours FTE
0.38
Monthly hours
4,225
Annual hours
50,700
Average hours per worker
32.5
Target coverage
97.5%
FTE capacity is below the target The current staffing pattern needs 25 more straight-time hours per week to reach the target FTE level.
FTE support sheet
Full-time standard
40 hours/week
Average part-time schedule
20 hours/week
Annual hours per 1.0 FTE
2,080
Average FTE per worker
0.81
Headcount per FTE
1.23
FTE mix from full-time / part-time / other hours
73.85% / 24.62% / 1.54%
Target FTE
25
Target coverage
97.5%
Difference to target
-0.62
Additional weekly hours needed at target
25
Equivalent full-time hires needed
0.63
Equivalent part-time hires at the current average schedule
1.25
Surplus weekly hours above target
—
Planning readout
One 1.0 FTE equals 40 hours per week and 2,080 hours across this planning year.
The current workforce averages 0.81 FTE per person. If the target is short, the gap can be read as either extra straight-time hours, equivalent full-time hires, or equivalent part-time hires at the average schedule entered.
Full-time equivalent calculator guide: headcount to FTE, annual staffing hours
A full-time equivalent calculator turns mixed full-time and part-time schedules into one comparable FTE staffing figure. That is useful when headcount alone is misleading because one team may have more people on payroll but fewer straight-time hours available than another.
What FTE is measuring
FTE expresses staffing capacity in full-time units instead of people. One full-time employee working the standard schedule counts as 1.00 FTE, while two half-time employees together also count as 1.00 FTE.
That makes FTE a better planning denominator than raw headcount when you need to compare teams, service coverage, workload capacity, or productivity across mixed schedules. It is especially helpful when some of the workforce is part-time or when casual hours are used to close gaps.
The formula behind the result
This FTE calculator starts with the full-time weekly standard you enter, then converts part-time and other straight-time hours into the same unit. Weekly hours are then annualized using the working weeks entered so you can compare total annual staffing capacity as well as the weekly FTE figure.
The target FTE input converts a staffing goal back into hours. That allows the calculator to show whether the current schedule mix is above or below plan, how much of the target is covered, and how many extra straight-time hours, full-time hires, or average part-time hires would be needed to close a staffing gap.
Part-time FTE = (Part-time employees x Average part-time hours per week) / Full-time hours per week
Converts part-time schedules into the same weekly basis as one full-time employee.
Total FTE = Total weekly straight-time hours / Full-time hours per week
The combined weekly staffing capacity expressed in full-time units.
How to use the FTE calculator
Start by entering the number of full-time employees and the full-time hours per week that define 1.0 FTE for this planning view. Many examples use 40 hours, but organizations can use a 37.5-hour, 35-hour, or other internal standard if that is the basis used in their reports.
Then enter the part-time headcount and the average part-time hours per week. The calculator converts those part-time schedules into part-time FTE. If you also have casual, temporary, contractor, or unassigned coverage hours that belong in the same straight-time capacity pool, add them as other weekly straight-time coverage.
FTE vs headcount in workforce planning
FTE and headcount answer different questions. Headcount tells you how many people are attached to the team. FTE tells you how much full-time-equivalent work capacity their scheduled hours represent.
That difference matters for staffing dashboards, productivity measures, revenue per employee comparisons, and budget planning. A department with 30 people at an average 0.65 FTE per person has a different capacity profile from a department with 24 people near 1.0 FTE, even if the larger team looks bigger on a headcount report.
Monthly and annual FTE hours
Annual FTE hours are the weekly straight-time hours multiplied by the working weeks entered. On a 40-hour, 52-week basis, one 1.0 FTE represents 2,080 hours per year. If the planning year excludes unpaid shutdowns, seasonal pauses, or unpaid leave assumptions, the annual-hours figure should use that shorter working-weeks basis.
The monthly-hours view simply spreads the annual straight-time hours across 12 months. It is useful for budget pacing and high-level capacity planning, but it should not be read as a detailed payroll calendar because real months have different working days.
Worked example: 18 full-time and 12 part-time employees
Suppose a team has 18 full-time employees on a 40-hour week, 12 part-time employees averaging 20 hours, and another 15 straight-time hours of casual coverage each week. Total weekly straight-time hours are 975, which converts to 24.38 FTE.
If the annual staffing target is 25.00 FTE, the team is short by 0.62 FTE and covers about 97.5 percent of the target. On the same 40-hour basis, that means about 25 additional straight-time hours per week would be needed to reach the target, which is roughly 0.63 of a full-time role or 1.25 part-time roles at the current 20-hour average.
When FTE calculations are used
Businesses often calculate FTE for staffing capacity, labor-cost planning, resource allocation, productivity ratios, grant or program reporting, and compliance conversations where hours need to be converted into a standardized workforce measure.
The same headline FTE number can still mean different things in different contexts. A budget model may use straight-time scheduled hours, a benefits rule may use a legally defined measurement period, and a productivity report may use average paid hours. Keep the denominator and the rule set visible whenever you share the result.
Why FTE still needs context
FTE is a staffing-capacity measure, not a complete employment-definition test. Legal full-time status, benefit eligibility, overtime rules, and collective-agreement terms can all use different thresholds from the planning standard used here.
It is also important to keep the denominator consistent. If one report uses a 40-hour week and another uses a 37.5-hour week, the FTE figures are not directly comparable until the basis is aligned.
Headcount counts people, while FTE counts staffing capacity in full-time units. A team can have a high headcount but a lower FTE figure if many of those workers are part-time.
Does overtime increase FTE in this calculator?
No. This planner is based on straight-time hours because that keeps the FTE denominator consistent. Overtime can matter operationally, but it is usually better treated separately from baseline FTE capacity.
Why do working weeks per year matter?
They affect the annual-hours view. The weekly FTE figure stays the same, but annual hours change if your planning year assumes fewer paid weeks because of shutdowns, unpaid leave, or seasonal operations.
Can I compare FTE across teams with different full-time standards?
Only if you first align the basis. A 35-hour full-time standard and a 40-hour full-time standard will produce different FTE figures from the same raw hours.
What is the formula to calculate FTE?
The core FTE calculation is total straight-time hours divided by the full-time hours for the same period. For a weekly calculation, divide total weekly hours by full-time weekly hours.
How many hours is 1.0 FTE per year?
On a 40-hour, 52-week basis, 1.0 FTE equals 2,080 hours per year. If your organization uses a 37.5-hour week or fewer working weeks, the annual hours per FTE will be lower.
What does 0.5 FTE mean?
A 0.5 FTE schedule is half of the full-time hours basis. On a 40-hour week that is 20 hours per week; on a 37.5-hour week it is 18.75 hours per week.
Should contractors or casual hours be included in FTE?
Include them only when they belong in the staffing-capacity view you are trying to measure. If they are outside the workforce definition used for a compliance report or benefits test, keep them separate.
Is this an ACA or benefits eligibility calculator?
No. It can help translate hours into FTE for planning, but benefits, ACA, tax, and labor-law rules can define full-time status and measurement periods differently. Use the relevant official rule set for compliance decisions.
