Churn Rate Calculator

Calculate customer churn rate, retention rate, and average customer lifespan.

Customers at Start of Period

Customers Lost During Period

Revenue churn (optional)

MRR at Start ($) - optional

MRR Lost ($) - optional

About Churn Rate Calculator

Churn rate measures the percentage of customers who stop using your product or service during a given period. For SaaS businesses, a monthly churn rate under 5% is generally considered acceptable. Revenue churn is equally important as it measures the actual revenue impact. Average customer lifespan is estimated as 1 / churn rate, helping you forecast LTV and plan retention strategies.