Glossary
Conversion Rate
The percentage of visitors who complete a desired action on a page.
Definition
Conversion rate is the percentage of visitors to a page or campaign who complete a specific desired action — called a 'conversion'. It is calculated as: Conversion Rate = (Conversions ÷ Total Visitors) × 100. Optimizing conversion rate is the focus of Conversion Rate Optimization (CRO).
Why It Matters
Conversion rate is the ultimate measure of how effectively your content drives action. High traffic with a low conversion rate means your content attracts visitors but fails to persuade them. Even small improvements in conversion rate compound into significant revenue gains at scale.
Examples
Email signup rateA blog post with a 2% email signup rate — 2 subscribers per 100 readers
E-commerce conversionA product page converting 3% of visitors to purchases
Landing pageA free tool page converting 15% of visitors to newsletter subscribers
Common Mistakes
Optimizing for traffic without measuring conversions.
Using weak or vague CTAs.
Failing to A/B test page elements.
Ignoring mobile conversion rate separately.