Marketing

Customer Retention Rate Calculator

Calculate customer retention rate and churn rate. Apply the retention formula with start, end, and new customer counts.

Start-of-Period CustomersTotal customers at start of period

End-of-Period CustomersTotal customers at end of period

New Customers (Period)New customers acquired during this period

Customer Retention Rate Formula

Retention Rate = (End Customers - New Customers) / Start Customers × 100

Customer Lifespan = 1 / Churn Rate. 5% monthly churn = 20 months average customer lifespan.

Frequently Asked Questions

Customer retention rate shows what percentage of your existing customers you kept during a specific period. Formula: Retention Rate = (End-of-Period Customers - New Customers Acquired) / Start-of-Period Customers × 100. It's the inverse of churn rate: Churn = 100 - Retention.

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