What does CTR mean?

The click through rate (CTR) is a central performance indicator in digital marketing and in search engine optimization. It measures the ratio between the number of clicks on a given link or ad and the number of times that link or ad was shown (impressions). The CTR is often used to judge how effective an online ad campaign is, or how relevant and appealing a search result or an ad is to users.

CTR explained: the ratio of clicks to impressions for a link, a search result or an ad

The CTR carries the most weight in the context of online ad campaigns and search engine results. A high CTR shows that the content or the ad is relevant and appealing to its audience. A low CTR can point the other way: the ad or the content is not compelling enough, or it does not match the audience it reaches.

How do you calculate the CTR?

Calculating the CTR is straightforward and follows this formula:

CTR = (number of clicks / number of impressions) x 100

In this formula, the number of clicks is how often users clicked the link or the ad. The number of impressions is how often that link or ad was shown to a user. The result is multiplied by 100 to express the CTR as a percentage.

What does the CTR say about SEO?

In search engine optimization, the CTR is an important indicator of how well a page or a piece of content matches what users actually searched for. A high CTR in the search results (SERPs) suggests that the title and the meta description of the page are doing their job and give users a reason to click.

A high CTR can also be a signal to search engines that a page is relevant for a particular query, which can translate into a better position in the SERPs. That said, the CTR is only one of many factors search engines weigh when they decide where a page ranks.

Working on the CTR as part of SEO therefore usually means improving titles and meta descriptions so that they speak to your target audience more directly. It also means making sure the page delivers what the title and the description promised. Done properly, this lifts not only the CTR but also the user experience, which in turn can have a positive effect on the SEO performance of the website.