Churn Rate Calculator

What is the churn rate calculator?

Churn rate is the percentage of customers who leave in a period, and its inverse — retention — determines how long a customer stays and therefore what they are worth. This calculator returns customer churn, revenue churn, retention and the implied average lifespan in months.

How to use it

1. 1Enter your customers at start and customers lost.
2. 2Adjust mrr at start and mrr lost if they apply — leave them as they are if not.
3. 3Press Calculate. Results update instantly, so you can change a number and compare.
4. 4Read the customer churn rate and retention rate first — those are the numbers that decide the call.
5. 5Save the result to your account if you want to come back to it later.

Frequently asked questions

Is the Churn Rate Calculator free to use?

Yes. The Churn Rate Calculator is free, unlimited and does not require an account. Creating a free account only adds favourites, saved results and history.

Is my data sent anywhere?

No. Everything runs in your browser — your figures never leave the device unless you choose to save a result to your account.