CTR (Click-Through Rate)

CTR (click-through rate) is the percentage of ad impressions that result in a click, calculated as clicks ÷ impressions × 100. If an ad is shown 10,000 times and gets 50 clicks, its CTR is 0.5%.

CTR is one of the most-watched engagement metrics in native and display advertising because it measures how compelling a creative is at the moment of exposure. A higher CTR means the headline, image, and angle are doing their job of earning attention and clicks.

Why it matters#

CTR feeds directly into cost and ranking. On most native ad networks the auction rewards ads that earn clicks, so a strong CTR can lower your effective CPC (Cost Per Click) and win more impressions for the same bid. It's also the first diagnostic when performance dips: a falling CTR often signals creative fatigue.

But CTR is only half the story. A clickbait headline can post a high CTR while sending unqualified traffic that never converts, so media buyers always read CTR alongside Conversion Rate (CVR) and downstream cost metrics. A 1% CTR that converts beats a 5% CTR that doesn't.

When spying on competitors, CTR isn't directly visible, but ad longevity is a useful proxy: ads that run for weeks are almost certainly clearing healthy CTR and conversion thresholds.

Related terms: Ad Impression, Conversion Rate (CVR), and CPC (Cost Per Click).