Click-through rate (CTR)

The click-through rate (CTR) is the percentage ratio between the number of clicks on an ad, link or email and the total number of times they were shown (impressions). It is one of the most important success indicators in digital marketing, showing how relevant and interesting your content is to the target group.

Mathematically CTR is calculated as clicks divided by impressions, multiplied by 100.

Description

CTR is a direct mirror of the quality of your creative, copy and targeting. If your ad was shown 1,000 times and 20 people clicked it, your CTR is 2%. In systems such as Google Ads or Meta Ads, a high CTR has a fundamental effect not only on traffic but also on price. The algorithms treat a high click-through rate as a sign of quality and often reward you with a lower cost per click (CPC).

What affects the click-through rate?

Headline and copy: they have to grab attention and communicate value clearly.
The visual: an attractive image or video in a sea of other content.
CTA (call to action): a clear prompt to act (“Buy now”, “Find out more”).
Position and placement: ads at the top of search results naturally have a higher CTR.
Relevance: whether the offer really matches what the user is looking for.

Practical example

Imagine you have a coffee e-shop running a Google Search campaign on the keyword “speciality coffee”.

Version A: headline “We sell coffee – wide selection”. (10 clicks from 1,000 impressions -> CTR 1%)
Version B: headline “Freshly roasted speciality coffee | Free delivery today”. (50 clicks from 1,000 impressions -> CTR 5%)

Version B has a five times higher click-through rate. That means you brought far more people to the site in the same time, and you probably paid less per click than with version A, because Google judged your ad more useful.