Retention Rate Calculator

Calculate what percentage of customers you retain over a period, excluding new acquisitions.

Customer Data

Time Period

Customers at Start of Period

Customers at End of Period

New Customers Acquired During Period

Retention = ((End - New) / Start) x 100

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Enter customer data to calculate retention rate

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: Standard Mathematical References

by Various

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.