Impressions to Conversion Rate / Marketing Terms Impressions to Conversion Rate Impressions to conversion rate is a digital marketing metric that measures the percentage of total impressions that lead to a conversion. This metric shows how effective an ad or piece of content is at turning views into desired actions, such as purchases, sign-ups or donations. While it is more common to calculate conversion rate based on clicks, the impressions-to-conversion version reflects the broader efficiency of brand exposure in driving meaningful outcomes. To calculate the impressions to conversion rate, divide the number of conversions by the number of impressions, then multiply by 100. For example, if an ad receives 100,000 impressions and drives 500 conversions, the impressions to conversion rate would be 0.5 percent. This metric is particularly useful when assessing the full funnel performance of display, video and awareness campaigns where users may convert later, without clicking directly on an ad. Although the impressions to conversion rate tends to be lower than click-based conversion rates, it provides valuable insight into the overall impact of visibility. It helps marketers evaluate the long-term effectiveness of content and ad impressions in influencing behaviour, even if the conversion happens through a different channel. For brand awareness, retargeting and upper-funnel strategies, this metric supports informed decisions about creative formats, frequency and audience targeting. For nonprofits and B2B campaigns, it can highlight the value of sustained exposure in driving eventual actions, even without immediate interaction.