Free Churn Rate Calculator Online
Calculate customer churn rate, revenue churn, and average customer lifespan in real time.
Inputs
Churn Metrics
Monthly Churn Rate
How it works
Enter customers at start
Input the number of customers at the beginning of the period.
Add customers lost
Enter how many customers cancelled or churned during the period.
Add MRR lost (optional)
Input monthly recurring revenue lost to see revenue churn rate.
View churn metrics
See churn rate, lifespan estimate, and annualised churn instantly.
Common use cases
SaaS companies
Track monthly subscriber churn and model impact on ARR.
Subscription boxes
Measure cancellation rates and average subscriber lifetime.
Membership sites
Calculate member retention and estimate lifetime membership revenue.
Telecoms & utilities
Monitor customer attrition and forecast revenue impact.
Frequently asked questions
What is a good churn rate?
SaaS industry average is 5–7% annually (0.4–0.6%/month). Best-in-class is under 2% annually.
What is revenue churn?
Revenue churn measures the % of MRR lost in a period — important if customers downgrade as well as cancel.
How do I calculate average customer lifespan from churn?
Lifespan = 1 / Monthly Churn Rate. At 5% monthly churn, average lifespan = 20 months.
What is the difference between gross and net churn?
Gross churn counts all losses; net churn subtracts expansion revenue from upgrades. This tool calculates gross churn.
Is my data private?
Yes — all calculations run in your browser with no data sent to any server.
How do I reduce churn?
Invest in onboarding, proactive customer success, usage-based alerts, and exit interviews to understand cancellation reasons.