Conversion rate and growth calculator.

Compare two periods using visitors and converted visitors. See what changed in your traffic and conversion rate.

Compare your counts

Previous period
Current period

Count each visitor once per period. Converted visitors cannot exceed visitors. Enter whole numbers, including explicit zeros, up to one billion.

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Your comparison

Two periods

Current conversion rate

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Enter all four counts, or try Example.

Previous conversion rate
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Conversion rate change
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Visitor growth
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Converted-visitor growth
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Conversion rate = converted visitors ÷ visitors × 100. Rate change uses percentage points; growth compares counts against the previous period.

More traffic and better conversion are different wins.

This conversion rate and growth calculator helps marketers compare two sets of visitor counts. A converted visitor is someone who completed your chosen action, such as signing up, requesting a demo or buying. Count each visitor once in each period. The tool calculates both conversion rates, the percentage-point difference and relative changes in visitors and converted visitors. It keeps volume growth separate from rate improvement, so extra traffic does not automatically look like better conversion.

Use the same conversion definition and comparable time windows. A zero-visitor period has no conversion rate; growth from a zero baseline is undefined. These totals do not prove statistical significance or explain what caused a change.

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