Definition
Conversion Rate
The percentage of website visitors who complete a desired action (purchase, signup, form submission). Calculated as (conversions ÷ total visitors) × 100.
What does Conversion Rate mean?
Conversion rate is the percentage of visitors who complete a defined goal action, such as a purchase, signup, or form submission, calculated as conversions divided by total visitors. It is the single most referenced metric in conversion rate optimization because it ties traffic directly to business outcomes.
Why does Conversion Rate matter?
It matters because it normalizes performance across different traffic volumes, letting teams compare a low-traffic landing page to a high-traffic homepage on equal footing, and it is the metric that most CRO tactics, including trust signals and social proof, are ultimately trying to move.
How is Conversion Rate applied in practice?
Conversion rate is tracked continuously in analytics platforms and calculated per page, segment, or campaign, and every A/B test is fundamentally a comparison of conversion rate between a control and one or more variants, evaluated for statistical significance before a winner is declared.
Go deeper
Related terms
Where this fits
Conversion Rate sits in the conversion analytics part of the NotiProof resource network.
Read the Conversion Analytics guide