Attrition Rate Calculator
Calculate employee attrition rate. Enter the number of employees who left and your average headcount to get an instant percentage.
Recommended Settings
Pro Tips
- •Attrition rate measures the percentage of employees who leave over a period, whether voluntarily or involuntarily
- •Average headcount is typically calculated as (starting headcount + ending headcount) ÷ 2 for the period
- •A high attrition rate can signal issues with compensation, management, or culture worth investigating further
- •Compare attrition rate across departments or time periods to spot trends rather than looking at a single number in isolation
Most Popular
Most users calculate attrition rate on a monthly or annual basis for HR reporting
When to Use This Tool
Report employee turnover as part of regular HR metrics and dashboards.
Estimate how many new hires you'll need to offset expected attrition.
Compare attrition rates across teams, departments, or time periods to identify trends.
Compare your organization's attrition rate against industry averages.
How It Works
Divide the number of employees who left during the period by your average headcount for that period
Multiply the result by 100 to express it as a percentage
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Frequently Asked Questions
How is average headcount calculated?
A common method is to add your headcount at the start and end of the period, then divide by 2. For more precision over longer periods, some organizations average headcount across each month.
What's a healthy attrition rate?
This varies significantly by industry, but overall annual attrition rates of 10-15% are often considered normal, while rates above 20% may warrant closer investigation.
Is my data sent to a server?
No. All calculations happen instantly in your browser using JavaScript. Nothing you enter is transmitted anywhere.
What's the difference between attrition and turnover?
The terms are often used interchangeably, though some organizations use "attrition" specifically for departures that aren't backfilled, and "turnover" for all departures regardless of replacement.