CTR Meaning in Plain English
The formula is CTR = Clicks ÷ Impressions × 100. Platforms apply their own rules for counting impressions and clicks, so compare like with like.
CTR can indicate whether a result, ad, or email link attracted attention. It does not reveal what happened after the click.
Example
An ad with 1,000 impressions and 40 clicks has a 4% CTR.
Why It Matters
CTR is useful for evaluating message and audience alignment when combined with conversion and quality measures.