Calculators
Free Churn Rate Calculator
Calculate customer churn rate from the customers you started with and the number you lost in a period. See the percentage and the formula.
Your result
4% churn
Customers lost from the starting cohort ÷ customers at start × 100.
How to use this tool
- Enter the customers at the start of the period and the number who cancelled during it.
- Read the churn rate; subtract it from one hundred for your retention rate.
- Try monthly and annual figures separately; they are not directly comparable.
Related free tools
Feedback form generator
Build a feedback form that asks for a name, email and open-ended comments. Add a rating dropdown, preview it and export HTML or React.
Open tool ↗CalculatorsCX ROI calculator
Estimate the return on a customer experience investment from the total benefit and the investment cost. See the ROI percentage and the formula.
Open tool ↗CalculatorsNPS calculator
Calculate your Net Promoter Score from promoter, passive and detractor counts. See the formula and what the score means.
Open tool ↗Frequently asked questions
Churn rate calculator
questions.
How is churn rate calculated?
Divide customers lost during the period by customers at the start of the period and multiply by one hundred.
How do I find out why customers churn?
Ask them. A short cancellation feedback form with a reason dropdown gives you data you can act on.
Is anything I enter saved or sent to Form Koi?
No. Everything you type or upload stays in this browser tab and is processed locally. Copy or download anything you want to keep before leaving the page.
Start with Form Koi Free