Churn Rate Calculator
Work out churn and retention from customers lost and customers at the start of the period, with average customer lifetime.
Work out churn
Frequently Asked Questions
Customers lost divided by customers at the start, with retention and average lifetime alongside.
Use your own, for a period you can actually measure. A calculator like this is only as good as the inputs, and the most common error is using a number that covers a different period or a different set of costs.
No. Everything is worked out in your browser and nothing is sent anywhere or saved.
We do not publish one, deliberately. Benchmarks for these measures vary enormously by sector, stage and how each company defines the inputs, so a number quoted without those definitions tends to mislead more than it helps.