Free Marketing tool

Customer Retention Calculator

Enter customers at the start and end of a period, plus customers acquired during it, to separate retention from growth.

Your result

Use the example or enter your figures, then calculate.

Use the same period for all counts. This assumes a customer is counted once and does not distinguish reactivations.

Retained customers = end customers − new customers. Retention = retained ÷ starting customers. Churn = 1 − retention.

New customers were not in the starting group, so they should not inflate retention of that group.

Not for a simple customer count. If it does, check definitions or reactivations.

Measure gross profit, return on investment and break-even sales for a campaign.

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The public tool catalogue is free. For a custom website or workflow, tell us what you need.