Free tool for SaaS founders
Churn Rate calculator
Enter customers lost, customers at the start of the period, and the period length. Chaser computes period, monthly, and annual churn rate.
Period churn rate
5.00%
over 1 month
Monthly churn
5.00%
Annual churn
45.96%
Formula
How churn rate is calculated
Churn Rate = Customers Lost ÷ Customers at Start × 100
Churn rate is one of the most important SaaS metrics. Even small improvements compound into large revenue gains over time, especially when you separate voluntary churn from involuntary churn caused by failed payments.
While you're here
Up to 40% of churn is involuntary
Expired cards, soft declines, and 3DS friction cause customers to churn without ever deciding to leave. Chaser runs a free 90-day audit against your Stripe ledger and identifies the failed-payment churn you can recover.