Churn Rate Calculator
Calculate churn rate from customers lost in a period, plus the matching retention rate.
How it works
Churn rate is the percentage of customers who leave over a period, and for any subscription business it is the number that quietly decides whether growth is real or just treading water.
It is customers lost divided by customers at the start, times a hundred. The flip side, retention rate, is simply what is left — the two always add up to 100 percent.
Even a few points of churn compound painfully over a year, so watching this figure and its trend matters as much as chasing new signups.
Frequently asked questions
How do I calculate churn rate?
Divide the customers you lost during a period by the number you had at the start, then multiply by 100. Losing 30 of 500 is a 6 percent churn rate.
What is the difference between churn and retention?
They are two sides of one coin. Retention is the share of customers who stay; churn is the share who leave. Together they make 100 percent.
What is a healthy churn rate?
Lower is better, and a good target depends on your model — many subscription businesses aim for low single-digit monthly churn. Compare against your own history.