Free tools / Churnor
Understand who stayed.
Calculate customer churn and retention for one period, using the customers you started with.
Your result
A clearer view starts here.
Enter your numbers and calculate to see the result.
Figures are calculated in this browser. They are not submitted to Churnor or saved in your workspace.
The calculation
Customer churn calculator
Churn = customers lost ÷ starting customers × 100. Retention = 100 − churn.
ChartMogul: how to measure customer churn ↗How to read it
Keep the context.
Count lost customers from the starting cohort only. Use one consistent period. This measures observed churn, not individual risk scores.
These calculations do not use Churnor’s customer risk model and do not predict whether an individual customer will cancel.
Go from a metric to a conversation.
Review customer risk and the signals behind it in Churnor.
Get started