Turnover Rate Calculator
12 separations with an average headcount of 80 equals a 15% turnover rate. This turnover rate calculator uses the standard HR formula: separations divided by average headcount for the same month, quarter, or year, multiplied by 100. Enter a whole-number separation count and the average headcount for that same period to get a clean turnover percentage.
Quick answer
Employee turnover rate measures separations as a share of average headcount for the same period.
What this tells you
- •Employee turnover rate measures separations as a share of average headcount for the same period.
- •This tool uses the average headcount you enter directly. It does not estimate headcount from beginning and ending staffing levels.
- •Separations should be a whole-number employee count. Average headcount can be a decimal when you averaged monthly or payroll snapshots.
How to Use
- 1Enter the number of employee separations for the period you want to measure.
- 2Enter the average headcount for that exact same month, quarter, or year.
- 3Click Calculate to convert the ratio into a turnover percentage.
- 4Use the result only against periods that use the same separation policy and averaging method.
How It Works
Formula
Turnover rate = (Separations ÷ Average headcount) × 100Count each employee who left once during the period, divide that total by the period's average headcount, then multiply by 100. The rate can rise above 100% when roles turn over more than once during the period.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
12 separations across an average staff of 80
Divide 12 by 80 to get 0.15, then multiply by 100. That means separations equaled 15% of the average staff size for the period.
9 separations across an average staff of 42.5
Averaging headcount can produce decimals. In this case, 9 ÷ 42.5 = 0.2118, which becomes a 21.18% turnover rate after multiplying by 100.
Turnover rate at 100 average employees
A quick reference that shows how many separations translate into common turnover percentages when average headcount is 100.
| Separations | Average headcount | Turnover rate |
|---|---|---|
| 5 | 100 | 5% |
| 10 | 100 | 10% |
| 15 | 100 | 15% |
| 25 | 100 | 25% |
| 40 | 100 | 40% |
If your average headcount is not 100, divide separations by your own average headcount instead of using this lookup.
Common mistakes
- Using ending headcount instead of average headcount for the period
- Mixing one period's separations with another period's average headcount
- Counting internal transfers as separations when your HR policy does not
- Entering a fractional separation count instead of a whole employee count