Employee Turnover Calculator
Measure staff turnover rate for a month, quarter or year.
About the Employee Turnover Calculator
Enter the headcount at the start and end of the period and how many people left. The calculator gives the turnover rate on average headcount and the retention of starting staff.
Turnover rate is the number of separations (voluntary and involuntary) divided by average headcount over the period. The US Bureau of Labor Statistics reports total separations of roughly 3.5–4% of employment a month across the economy.
The formula
Turnover = separations ÷ ((start + end) ÷ 2) × 100
Worked example
120 staff at the start of the year, 128 at the end, 18 left
- Average headcount: (120 + 128) ÷ 2 = 124
- Turnover: 18 ÷ 124 = 14.5%
Questions people ask
Should retirements count?
Yes in total turnover; track voluntary turnover separately.
What does turnover cost?
Often estimated at 30–50% of salary for replacing an employee, more for senior roles.
How do I annualise a monthly rate?
Multiply by 12 for a rough figure, or add up the twelve months' separations and divide by the year's average headcount.