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Churn Rate Calculator

Calculate your customer churn rate, retention rate, and average customer lifetime. Optionally enter ARPU to see revenue churn impact.

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Churn Rate Formulas

Monthly Churn Rate = (Customers Lost ÷ Customers at Start) × 100
Annual Churn Rate ≈ 1 − (1 − Monthly Churn Rate)^12
Retention Rate = 100 − Monthly Churn Rate
Avg Customer Lifetime = 1 ÷ Monthly Churn Rate (in months)
Revenue Churn = Customers Lost × ARPU

Frequently Asked Questions

For SaaS businesses, a monthly churn rate below 2% is generally considered good. Enterprise SaaS often achieves below 1% monthly. Consumer apps typically see 3%–8% monthly churn.

Customer churn measures the number (or percentage) of customers lost. Revenue churn (MRR churn) measures the monthly recurring revenue lost. High-value customers churning can have an outsized revenue impact even if customer count churn is low.

Annual churn ≈ 1 − (1 − monthly churn)^12. For example, a 2% monthly churn rate gives an annual churn of approximately 21.5%, not just 24%. This is because you lose customers from a shrinking base each month.

Common causes include poor onboarding, unmet expectations, pricing issues, lack of product-market fit, competition, and poor customer support. Analysing exit surveys and cohort data helps identify root causes.

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