Churn Rate Calculator
Measure how fast you lose customers and revenue. Enter your period's numbers to get customer & revenue churn, retention, annualised churn and average customer lifetime.
Your period (monthly)
Retention curve: share of today's cohort still subscribed each month at this churn rate.
Customer churn vs revenue churn
Customer churn = customers lost ÷ customers at the start of the period. Revenue churn = MRR lost ÷ MRR at the start — it can differ a lot from customer churn if your churned accounts are bigger or smaller than average. A small monthly number compounds: 3% monthly churn means roughly 30% of a cohort is gone within a year. Average customer lifetime is 1 ÷ churn rate, so lowering churn is the highest-leverage way to raise LTV.
Plan the whole picture in Adlega
Adlega turns these one-off numbers into a live financial model for your SaaS — projections, scenarios, dashboards.