Churn Rate Calculator
The leak in your customer base.
Runs locally in your browser — your numbers never leave this pageTry: Customers lost=50, Starting customers=1000 → 50, 1000, 5.00%
How to use
Churn rate is the share of customers who leave in a period. High churn silently caps growth no matter how many you acquire.
Formula
Churn = Lost / Starting
FAQ
Monthly or annual?
State the period; annual churn is not just 12× monthly because of compounding.
Why reduce churn?
Keeping a customer is far cheaper than replacing one, and it lifts LTV.
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