How it is calculated
Customers lost ÷ customers at the start of the period × 100.
Finance
Churn Rate Calculator
Measure customer or revenue churn for a period. Results are estimates and are calculated locally on your device.
Use this result as a planning estimate, not financial, tax, legal, or professional advice.
How to use this tool
Understand the result before you act on it
Measure the percentage of customers or recurring revenue lost during a period.
Worked example
Starting with 500 customers and losing 20 during the month produces 4% customer churn.
What to do with the number
Use the result as a baseline, test different assumptions, and compare scenarios before changing budgets, staffing, pricing, or processes.
Common questions
Churn Rate Calculator FAQ
How do I calculate churn rate?
Use the calculator with your own business inputs and compare the result over a consistent period. The output is a planning estimate, so validate important decisions against your accounting or operating data.
What is the difference between customer and revenue churn?
Use definitions that stay consistent from one measurement period to the next. Consistency makes the result more useful for comparisons and trend tracking.
What time period should I use?
No. The calculator provides an estimate from the values you enter. Real outcomes depend on pricing, operations, customer behavior, data quality, and other business conditions.
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