Customer Churn Calculator
Customer Churn measures the percentage of customer accounts lost over a given period.
Monthly Customer Churn = Customers Lost During Month / Customers at Start of Month | Variable | Meaning |
|---|---|
Customers Lost During Month | Accounts that cancelled during the month. |
Customers at Start of Month | Active customer accounts at the start of the month. |
Worked example
- Monthly customer churn
- 2%
- → Average customer lifespan (months)
- 50
- → Annualized churn
- 21.5%
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Customer Churn Formula
Monthly Customer Churn = Customers Lost During Month / Customers at Start of Month | Variable | Meaning |
|---|---|
Customers Lost During Month | Accounts that cancelled during the month. |
Customers at Start of Month | Active customer accounts at the start of the month. |
How to Calculate Customer Churn
Worked example
- Monthly customer churn
- 2%
- → Average customer lifespan (months)
- 50
- → Annualized churn
- 21.5%
Full definition, benchmarks, and common mistakes live on the Customer Churn glossary page ; quick answers are in the Customer Churn FAQ .