What Is Conversion Rate?

Conversion rate is the percentage of your website visitors who take a specific desired action — called a "conversion." What counts as a conversion depends on your business goals: for a service business, it might be filling out a contact form or calling your office; for an e-commerce site, it's completing a purchase; for a SaaS company, it could be signing up for a free trial. The formula is straightforward: divide the number of conversions by the total number of visitors, then multiply by 100. If 1,000 people visit your website and 30 fill out your contact form, your conversion rate is 3%.

Conversion rate is one of the most important metrics in digital marketing because it directly measures the effectiveness of your website and marketing campaigns at generating business results. A high conversion rate means your traffic is well-targeted and your website effectively persuades visitors to take action. A low conversion rate might indicate a mismatch between your advertising and your landing page, a poor user experience, unclear calls to action, or that you're attracting the wrong type of visitors.

Conversion rate optimization (CRO) is the practice of systematically improving your conversion rate through testing and iteration. Common CRO tactics include A/B testing different headlines, calls to action, and page layouts; improving page load speed; simplifying forms; adding trust signals like testimonials and certifications; and ensuring your pages are mobile-friendly. Even small improvements in conversion rate can have a significant impact on revenue — doubling your conversion rate from 2% to 4% is equivalent to doubling your traffic, but typically far less expensive to achieve.