Free Attrition Rate Calculator
Calculate attrition rates for employees, customers, email subscribers, or students. Includes retention analysis, half-life projections, replacement cost estimates, and industry benchmarks.
Calculate attrition rates for employees, customers, subscribers, or students — with retention analysis, half-life projections, and industry benchmarks
Average annual employee attrition is 15-20%. Under 10% is excellent for most industries.
Include to see net change analysis
Attrition vs Churn vs Turnover
- Attrition is the broadest term — any reduction in your group over time, regardless of whether positions are refilled
- Churn is typically used for customers/subscribers — the percentage who leave or cancel in a given period
- Turnover is typically used for employees — includes both voluntary (resignations) and involuntary (terminations) departures
- The retention rate is simply 100% minus the attrition rate — it tells you the same story from the positive angle
- All three measure fundamentally the same thing: how fast you're losing people. The context determines which word to use
About this tool
Attrition is the silent killer of growth. You can be adding new customers, subscribers, or employees at a healthy clip — but if attrition is eating away at your base just as fast, you're running on a treadmill going nowhere.
This calculator works for any context: employee turnover (HR), customer churn (SaaS), subscriber attrition (email marketing), or student dropout rates. It gives you the attrition rate, retention rate, annualized projections, half-life analysis, and — for employees — estimated replacement costs.
For email marketers, subscriber attrition is especially important. A healthy email list should have less than 0.5-1% monthly attrition (unsubscribes + bounces combined). If your list is shrinking faster than you're growing it, check our list growth calculator to see the net picture, and review your unsubscribe rate and bounce rate to find the root cause.
For SaaS companies, customer attrition is essentially your churn rate — the metric that determines whether your business can sustain long-term growth. Pair attrition data with your MRR and customer lifetime value for a complete health check.
Frequently Asked Questions
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