Example: Customers at start of month: 1,200 · Customers lost during month: 42 → Monthly churn: 3.5%.
Annualized churn: 34.8%
Average customer lifetime: 29 months
Frequently asked questions
How do I calculate churn rate? Enter your numbers above and the result updates instantly. For example: Customers at start of month: 1,200 · Customers lost during month: 42 → Monthly churn: 3.5%.
Is this Churn Rate Calculator free? Yes — completely free with no sign-up or paywall. It runs entirely in your browser and keeps working offline; the numbers you enter never leave your device.
How accurate is it? It uses the standard published formula for churn rate. Results are estimates for planning — not financial, tax, medical, engineering, or legal advice.