Churn rate calculator
Measure how many customers you lose in a period. Use the same period every time — month or quarter. Nothing you type is saved or sent anywhere.
- Churn rate
- 5%
- Retention rate
- 95%
- Customers at end
- 220
- Average customer lifetime
- 20 periods
How it is calculated
Churn rate = customers lost ÷ customers at the start of the period.
Average lifetime ≈ 1 ÷ churn rate (in periods), assuming churn stays steady.
Learn how to reduce it in customer churn analysis, then plug the lifetime into the unit economics calculator.