📉 Churn Rate Calculator
Monthly churn rate and annual retention
About this calculator
Churn rate measures the customers slipping away each period. Enter customers at the start and end of the month (plus new signups, so growth does not mask losses) and the calculator returns logo churn — and with revenue figures, revenue churn, which weights customers by what they pay.
Logo churn equals customers lost divided by customers at start, times 100. Revenue churn uses MRR lost over starting MRR instead — and it can even go negative when expansions from happy customers outweigh cancellations, the hallmark of healthy SaaS.
Tip: Track both, but manage to revenue churn — losing ten tiny accounts while landing one big expansion is a win the logo number hides.