What Is Click-Through Rate? The Metric That Connects Visibility to Engagement

Click-through rate (CTR) is the share of a link’s impressions that led to a click: clicks divided by impressions. Both are counted events, not people; one searcher can produce several of each. In search it is the point where visibility turns into a visit, which is why the same CTR can mean very different things depending on the query, the position, and what else appeared on the results page. Read alone it is a number; read against those conditions it shows whether your listing is what searchers want to open.

How Search Console Counts It

Google’s Performance report documentation defines click-through rate this way: “The calculation of (clicks ÷ impressions)” and explains how each part is counted, including the result types that count an impression only when they are scrolled or expanded into view. It also notes: “Click, impression, and position data are attributed to the canonical URL of the link,” so a page’s numbers include clicks on the URL Google treats as canonical.

The same ratio is used for ads, email, and social posts. The formula travels; the baseline does not, because each channel and query type has its own normal range.

Where to Read It

CTR for organic search comes from the Performance report in Search Console, which groups data by query, page, country, device, search appearance, and date. The grouping matters more than the site-wide average: a site’s overall CTR mixes brand searches, broad questions, and long-tail queries, and the average hides what is happening in each.

What Changes CTR Without Changing the Page

A page can keep its position and see its CTR move because the page around it changed:

• Position on the page, since results lower down are seen by fewer people.
• The kind of query, since someone looking for a specific site behaves differently from someone exploring a topic.
• Ads and shopping units above the organic results.
• Rich results and other enhanced listings competing for attention.
• An AI Overview answering the question before the results.

Fixed “position one gets X percent” figures come from studies of results pages that looked different from today’s, so they make poor targets. Compare a page with its own history and with similar pages on your site.

What AI Overviews Have Done to CTR

The clearest published measurement comes from Ahrefs. In its updated study, it selected 300,000 keywords, half with an AI Overview and half informational keywords without one, and compared click-through rates for December 2023, before AI Overviews, with December 2025. It found that “the presence of an AI Overview now correlates with a 58% lower average clickthrough rate for the top-ranking page.”

Two limits apply to that number: it describes a correlation across a keyword sample, not the effect on any one page, and it measures the top-ranking page. On your own site, the Performance report shows the change directly. Watch CTR on queries where an AI Overview now appears and compare it with the period before.

What You Can Change

Three parts of a listing are in your hands:

• The title. Google builds the clickable title link from several sources, and its title link guidance asks for descriptive, concise, unique titles.
• The description. Google’s snippet guidance says “Google primarily uses the content on the page to automatically determine the appropriate snippet” and may use the meta description “when it describes the page better than other parts of the content,” and it notes that identical or similar descriptions on every page “aren’t helpful.”
• Structured data. Valid markup can make a page eligible for an enhanced listing, and Google’s structured data guidelines make clear that eligibility is not a guarantee. Some formats have also been retired; FAQ rich results no longer appear in Google Search.

The three do different jobs. The title can bear on relevance as well as presentation: Google’s Search Essentials advise placing the words people search for “in prominent locations on the page, such as the title and main heading of a page.” The description and structured data change how the result presents itself in the position it holds.

Is CTR a Ranking Factor?

The public record has two parts. In 2016, Google’s Gary Illyes told a Pubcon audience, as Search Engine Journal reported, that clicks in general are very noisy, and said click data is used for purposes such as personalization. In 2024, a federal court described a Google system, Navboost, that pairs queries with documents by memorizing what users clicked, in its findings in United States v. Google. User behavior in aggregate does feed ranking systems, then, but nothing in that record shows that raising one page’s CTR moves its position.

What CTR does decide is how much traffic a position is worth. At the same rank, a listing that more people choose sends more visitors.

Using CTR Well

Treat CTR as a comparison. Set a page against its own past and against pages on your site that target similar searches at similar positions. When CTR drops on a page whose position has not changed, look at the results page first: a new AI Overview, new ads, or a competitor’s richer listing can be the reason, and the Performance report will show when the change began. Before crediting a new title or description for a change in CTR, compare the same queries, device, and country over equal periods, since a shift in query mix or position moves CTR on its own.