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Turnover Rate Calculator

Calculate employee turnover rate from leavers and headcount. Optional average headcount override and annualised turnover.

Use the Turnover Rate Calculator

Enter employees who left, headcount at start and end (or average override), and period length. Turnover rate and optional annualised rate are calculated.

Employee movement

Employees who left and headcount at start and end of period. Optional average headcount override.

Results

Turnover rate
9.8%
Average headcount
51.0

Turnover rate = Leavers ÷ Average headcount × 100. Annualised: 1 − (1 − period turnover)^(12/period months), for comparison across different period lengths.

What this metric means

Turnover rate is the proportion of employees who left during a period relative to average headcount. It signals retention and labour stability and is used for planning and benchmarking.

How to calculate it

Average headcount = (Headcount at start + Headcount at end) / 2 (or use your override). Turnover rate = Leavers / Average headcount x 100. For annualised rate, use the formula that compounds the period rate to 12 months.

How to improve the metric

Reduce voluntary turnover through pay, conditions, career path and culture; manage involuntary turnover through performance and fit. Track exit reasons and segment by role or tenure to prioritise actions.

Common mistakes

Using headcount at one point instead of average; mixing periods (e.g. leavers for 6 months with annual headcount); or including contractors in headcount but not in leavers (or vice versa).

How to interpret your result

Compare to your own history and, if available, industry benchmarks. High turnover increases recruitment and onboarding cost and can affect productivity; context (role, market) matters.

FAQs

How is turnover rate calculated?▾
Turnover rate (%) = (Employees who left / Average headcount) x 100. Average headcount is usually (Headcount at start + Headcount at end) / 2, or you can override it.
What period should I use?▾
Use the period over which leavers and headcount are measured (e.g. 3 months, 6 months, 12 months). The calculator can annualise a shorter period if you enter the period length in months.
What is annualised turnover?▾
If you have turnover for a shorter period (e.g. 3 months), annualised rate estimates what the yearly rate would be if that rate continued: 1 - (1 - period turnover)^(12/period months).
Should I use start/end headcount or average?▾
Standard practice is average of start and end. If headcount changed a lot or you have a known average (e.g. from payroll), use the override.
What counts as a leaver?▾
Anyone who left during the period (voluntary or involuntary). Exclude internal moves if you want external turnover only; the calculator doesn't distinguish—use the same definition consistently.

Related tools

Browse all calculators on NetGrow.

NetGrow

Turnover Rate Calculator

Calculate employee turnover rate from leavers and headcount. Optional average headcount override and annualised turnover.

Use the Turnover Rate Calculator

Enter employees who left, headcount at start and end (or average override), and period length. Turnover rate and optional annualised rate are calculated.

Employee movement

Employees who left and headcount at start and end of period. Optional average headcount override.

Results

Turnover rate
9.8%
Average headcount
51.0

Turnover rate = Leavers ÷ Average headcount × 100. Annualised: 1 − (1 − period turnover)^(12/period months), for comparison across different period lengths.

What this metric means

Turnover rate is the proportion of employees who left during a period relative to average headcount. It signals retention and labour stability and is used for planning and benchmarking.

How to calculate it

Average headcount = (Headcount at start + Headcount at end) / 2 (or use your override). Turnover rate = Leavers / Average headcount x 100. For annualised rate, use the formula that compounds the period rate to 12 months.

How to improve the metric

Reduce voluntary turnover through pay, conditions, career path and culture; manage involuntary turnover through performance and fit. Track exit reasons and segment by role or tenure to prioritise actions.

Common mistakes

Using headcount at one point instead of average; mixing periods (e.g. leavers for 6 months with annual headcount); or including contractors in headcount but not in leavers (or vice versa).

How to interpret your result

Compare to your own history and, if available, industry benchmarks. High turnover increases recruitment and onboarding cost and can affect productivity; context (role, market) matters.

FAQs

How is turnover rate calculated?▾
Turnover rate (%) = (Employees who left / Average headcount) x 100. Average headcount is usually (Headcount at start + Headcount at end) / 2, or you can override it.
What period should I use?▾
Use the period over which leavers and headcount are measured (e.g. 3 months, 6 months, 12 months). The calculator can annualise a shorter period if you enter the period length in months.
What is annualised turnover?▾
If you have turnover for a shorter period (e.g. 3 months), annualised rate estimates what the yearly rate would be if that rate continued: 1 - (1 - period turnover)^(12/period months).
Should I use start/end headcount or average?▾
Standard practice is average of start and end. If headcount changed a lot or you have a known average (e.g. from payroll), use the override.
What counts as a leaver?▾
Anyone who left during the period (voluntary or involuntary). Exclude internal moves if you want external turnover only; the calculator doesn't distinguish—use the same definition consistently.

Related tools

Browse all calculators on NetGrow.