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Churn Rate Calculator
Use this churn rate calculator to see what percentage of customers you lose during a period.
Churn Rate Calculator
Enter your numbers and the result updates straight away.
Outputs
Planning estimate only. Verify assumptions before making a financial decision.
If you start the month with 1,250 customers and lose 48, churn rate is (48 / 1,250) * 100 = 3.84%.
How this calculation works
This calculator applies the stated churn rate = (customers lost / customers at start) * 100 formula to the values entered above.
How to interpret the result
Calculate customer churn rate. Compare the result with your own historical performance, operating assumptions, and downside case before acting.
Limitations
Results are educational planning estimates. They do not include every tax, legal, accounting, financing, or business-specific consideration and are not professional advice.
Formula and example
If you start the month with 1,250 customers and lose 48, churn rate is (48 / 1,250) * 100 = 3.84%.
Common use cases
- Track retention by month or quarter.
- Compare churn before and after onboarding or pricing changes.
- Monitor leading indicators of MRR growth or contraction.
Churn Rate Calculator FAQ
What is a good churn rate?
It varies by business model and market. The main goal is to reduce churn while maintaining healthy acquisition and margins.
Can customers lost be greater than starting customers?
Usually no. If that happens, re-check the reporting period or data export.
Should churn include downgrades?
Customer churn typically counts lost customers only. Revenue churn and logo churn should be tracked separately.
Why does starting customer count need to be positive?
The churn formula uses starting customers as the denominator, so the value must be above zero.