Calculate the percentage of existing customers retained over time.
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Primary Result—
Secondary Result—
Total / Final Value—
Growth / Percentage—
| Step | Label | Value |
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What this result means
This result shows the most cost-efficient reorder size.
When to use this calculator
Use it when you purchase stock repeatedly throughout the year.
Why it is useful
It helps reduce ordering cost and storage cost together.
About this calculator
This result shows how well your business keeps existing customers.
When to use it
Use it alongside churn and CLV analysis.
Why it matters
It helps show customer loyalty and product-market fit.