Conversion Rate

Conversion Rate is the percentage of users who complete a desired action, such as making a purchase, signing up for a newsletter, or downloading an app. It is a critical metric for measuring the effectiveness of a website or app in driving user engagement and achieving business goals. Higher conversion rates generally reflect a successful user experience and effective design.

Conversion rate is the metric that connects design quality to business outcomes. A 2% improvement in trial-to-paid conversion for a SaaS with 1,000 monthly trials is worth far more than almost any new feature. For founders, tracking conversion rate at each stage of the funnel — visitor to signup, signup to activation, trial to paid — identifies exactly where the product is losing people.

Slack's free-to-paid conversion is driven heavily by hitting a 10-message limit in search history — a deliberate product decision that creates a conversion moment at the exact point where the user has proven enough value to justify paying.