Churn Rate Calculator

Measure the share of customers you lose each period.

Customers at start

Customers lost

Churn rate

About this tool

Churn rate = customers lost ÷ customers at the start of the period × 100. Measure it monthly. Small percentages compound: 5% a month is close to half your customers gone in a year.

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Churn rate: what it is and how to cut itChurn is the leak that caps your growth. How to calculate customer and revenue churn, why small percentages compound badly, and where to actually plug it.9 min read

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