CTR (Click-through rate)

How to calculate CTR

An impression is one time your ad was shown. A click is someone tapping or clicking it. Click-through rate (CTR) is clicks divided by impressions. Write that result as a percent.

Let's take a drink brand as an example. They sell a low-sugar sports drink for active women over 50, mostly from their own website. The drink brand runs a 15-second Instagram video of a 58-year-old runner opening a can after a long walk. The ad is shown 10,000 times and 200 people tap through to the shop. 200 ÷ 10,000 = 0.02, which we write as a 2% click-through rate (CTR).

Let's take a drink brand as an example. They sell a low-sugar sports drink for active women over 50, mostly from their own website. Compare the drink brand's Instagram ad to itself over time, and to other drink-brand ads in the same place. Search ads, paid social ads (ads in a scrolling feed), and email do not share a scale. A blended click-through rate (CTR) across all of them is a headline, not a decision.

Why CTR matters

Click-through rate (CTR: clicks divided by impressions) is an early signal. Let's take a drink brand as an example. They sell a low-sugar sports drink for active women over 50, mostly from their own website. If a new drink-brand ad aimed at women who have never heard of the drink has a weak CTR, the video or the offer is not earning a look. People are scrolling past. If CTR is strong but almost nobody buys, the wrong people clicked, or the shop page did not match the promise in the ad.

When click-through rate (CTR) is strong and almost nobody buys, the next number is conversion rate (orders divided by visits). CTR asks whether anyone cared enough to click the ad. Conversion rate asks whether the visit to the shop counted as an order.

Teams use click-through rate (CTR: clicks divided by impressions) as a daily check on new ads. CTR is not a goal on its own. It is the first fork: did anyone care enough to tap?

How to read CTR

There is no universal good click-through rate (CTR: clicks divided by impressions). Search ads, paid social ads, email, and organic search results live on different scales. Compare an ad to itself, and to other ads in the same place. Let's take a drink brand as an example. They sell a low-sugar sports drink for active women over 50, mostly from their own website. Do not compare the drink brand's TikTok ad to a blog-post average you found online.

On video ads, the first seconds matter more than the click. Hook rate tells you whether people even stayed long enough to see the offer, let alone click. Click-through rate (CTR) only starts after someone has already seen enough of the ad to tap.

Break click-through rate (CTR) by ad, not only by campaign. A campaign is one group of ads with its own budget. A campaign CTR can look fine while one tired video is dying and a new one is carrying the average. That dying ad is the one to swap.

Common CTR mistakes

• Chasing click-through rate (CTR) with a shocking first line that has nothing to do with the drink. Let's take a drink brand as an example. They sell a low-sugar sports drink for active women over 50, mostly from their own website. Cheap clicks look efficient on CPC (cost per click: ad spend divided by clicks) and wreck conversion rate later, because the visitors did not come for the sports drink.
• Ignoring fatigue. Let's take a drink brand as an example. They sell a low-sugar sports drink for active women over 50, mostly from their own website. The same drink-brand video shown too often loses click-through rate (CTR), then CPM (cost per mille: the price of a thousand views) rises. See creative fatigue.