Attrition Rate Calculator
Calculate employee turnover percentage and generate Excel formulas.
Employees at the beginning of the period.
Employees hired during the period.
Employees who left during the period.
Label for your report.
End Headcount:
–
Average Headcount:
–
Attrition Rate:
0.00%
Excel Formula for this calculation:
=Separations / ((Start + End) / 2)
How to Calculate Attrition Rate
Attrition rate, often referred to as employee turnover rate, is a critical HR metric that measures the rate at which employees leave an organization over a specific period. A high attrition rate can indicate issues with company culture, compensation, or management.
The standard mathematical formula used in this calculator is:
Attrition Rate = (Separations / Average Headcount) × 100
Where:
- Separations: The total number of employees who left the company (voluntary and involuntary).
- Average Headcount: (Headcount at Start + Headcount at End) / 2.
Attrition Rate Calculation Formula in Excel
If you are managing your HR data in Microsoft Excel, you can automate this calculation easily. Assuming your data is arranged in columns, here is how to construct the formula.
Scenario 1: You have Aggregate Data
If you have a summary table like the one below:
| Row | A (Start Count) | B (End Count) | C (Separations) | D (Result) |
|---|---|---|---|---|
| 2 | 100 | 95 | 10 | Formula Here |
The Excel formula in cell D2 would be:
=(C2 / AVERAGE(A2, B2)) * 100
Scenario 2: Calculating End Count Dynamically
Often, you only know the Start Count, New Hires, and Separations. To calculate the rate without manually calculating the End Count first, use this formula:
= (Separations) / ( (Start_Count + (Start_Count + New_Hires - Separations)) / 2 ) * 100
Assuming:
- A2 = Start Count
- B2 = New Hires
- C2 = Separations
The formula becomes:
=(C2 / ((A2 + (A2 + B2 - C2)) / 2)) * 100
Interpreting the Result
Generally, an attrition rate below 10% is considered healthy in many industries, while rates above 20% may require immediate attention. However, these benchmarks vary significantly by industry (e.g., retail and hospitality typically have higher rates than finance).