Turnover Rate Calculator
Measure employee turnover the standard way. Enter starting and ending headcount plus the number of separations, pick the period (month, quarter, or year), and get the rate along with an annualized figure.
Example: with Headcount at period start 120 · Headcount at period end 110 · Separations during period 18 · Period length One year → Turnover rate: 15.65% per year.
- Annualized15.65% annualized
- Average headcount115 (average headcount used)
Computed by the calculator below using its default values. Change any input to see your own numbers.
Turnover rate = separations ÷ average headcount × 100 (the SHRM-standard method). Average headcount = (start + end) ÷ 2.
The standard formula
Turnover rate divides the number of employees who left during a period by the average number employed during that period, then multiplies by 100. Averaging the starting and ending headcount smooths out growth or shrinkage: a team that went from 120 to 110 people while 18 left has a turnover base of 115, not 120 or 110.
Count every true separation — voluntary quits, terminations, layoffs, retirements. Internal transfers and promotions are not separations, because the person still works for you. Many teams also track voluntary-only turnover separately, since that is the number leadership can most directly influence.
Making rates comparable
A 2% monthly rate and a 24% annual rate describe the same reality, so always compare like periods. This tool annualizes by multiplying the period rate by 12 (months) or 4 (quarters) — a fine approximation as long as the period you measured is typical.
For outside context, the Bureau of Labor Statistics publishes separation rates by industry in its JOLTS series; hospitality churns several times faster than government, so compare against your own industry, not an all-economy average.
How it’s calculated
Turnover rate = separations during the period ÷ average headcount × 100, with average headcount = (starting headcount + ending headcount) ÷ 2 — the method SHRM documents. Annualized rate = period rate × 12 for a month, × 4 for a quarter, × 1 for a year.
Straight multiplication annualizes a single period; if turnover is seasonal, a trailing 12-month count is more honest than one hot month times 12.
What a monthly rate means annualized
| Monthly turnover | Annualized |
|---|---|
| 1.0% | 12% |
| 1.5% | 18% |
| 2.0% | 24% |
| 3.0% | 36% |
| 4.0% | 48% |
Computed as monthly rate × 12 (simple annualization).
Common mistakes
- Dividing by ending headcount instead of the average — after layoffs that inflates the rate.
- Counting internal transfers or promotions as separations; only people who leave the organization count.
- Comparing a monthly rate against an annual benchmark without multiplying by 12.
- Mixing contractors into one measurement but not the other — keep the separation count and headcount describing the same population.
Frequently asked questions
How do you calculate turnover rate?
Turnover rate = separations ÷ average headcount × 100, where average headcount = (start + end) ÷ 2. Eighteen separations against an average of 115 employees is a 15.65% rate.
What's the difference between turnover, attrition, and retention?
Turnover counts everyone who left, however they left. Attrition usually means departures you don't backfill (often via resignations or retirements). Retention measures who stayed — and because hires enter and exit mid-period, it is not simply 100 minus turnover.
What counts as a separation?
Voluntary quits, involuntary terminations, layoffs, and retirements — anyone who leaves the organization. Transfers between departments and promotions stay in headcount and don't count.
What is a good turnover rate?
It varies so much by industry that a single number misleads — hospitality and retail run far hotter than finance or government. Benchmark against your industry's BLS JOLTS separation rates and, more usefully, against your own trend.
How do I annualize a monthly rate?
Multiply by 12. A 2.44% monthly rate implies roughly 29.3% per year if that month is typical; for seasonal businesses, measure a full trailing year instead.