What Is CTR?
CTR (click-through rate) is the percentage of people who saw an ad and clicked it. It's one of the most widely tracked engagement metrics in digital advertising, used to judge how compelling an ad's creative, copy, and targeting are at the moment someone sees it.
Platforms like Google Ads and Meta also use CTR as a signal in ad ranking and Quality Score — a higher CTR relative to competing ads can lower the CPC you pay for the same position or audience.
CTR Formula
Divide total clicks by total impressions, then multiply by 100 to express it as a percentage.
CTR = (Total Clicks ÷ Total Impressions) × 100
Worked Example
An ad receives 3,000 clicks from 150,000 impressions.
CTR = (3,000 ÷ 150,000) × 100 = 2%
Rearranged, the same formula solves for clicks or impressions, which is what the “Total Clicks” and “Total Impressions” modes above do:
Total Clicks = Total Impressions × (CTR ÷ 100)
Total Impressions = Total Clicks ÷ (CTR ÷ 100)
To go straight from impressions and a target CTR to a projected click count, use the clicks calculator, or convert a known CPC and CTR into CPM with the CPC calculator and CPC to CPM section.
What Affects CTR?
- Ad relevance — ads closely matched to the audience's intent or interests tend to see higher CTR.
- Creative and copy — headline clarity, imagery, and a clear call to action all move CTR directly.
- Placement — above-the-fold or native-feel placements typically out-click banner positions that are easy to ignore.
- Ad format — video and interactive formats often generate different CTR than static display banners for the same audience.
- Audience fit — narrower, well-targeted audiences usually produce higher CTR than broad, untargeted reach.
CTR Calculator FAQ
How is CTR calculated?
CTR is calculated by dividing total clicks by total impressions, then multiplying by 100: CTR = (Clicks ÷ Impressions) × 100. Enter your clicks and impressions above to calculate it instantly.
What's a good CTR?
Average CTR varies widely by platform and ad format — search ads typically see higher CTR than display banners, for example. Compare your CTR against your own historical campaigns and your specific platform's benchmarks rather than a single universal number.
How do you calculate clicks from CTR and impressions?
Multiply impressions by CTR (as a decimal): Clicks = Impressions × (CTR ÷ 100). Use the "Total Clicks" mode above, or the dedicated clicks calculator, to solve this for your own numbers.
Does a high CTR always mean a good campaign?
Not necessarily. CTR measures how compelling an ad is at generating clicks, but it doesn't measure what happens after the click. A high-CTR ad that drives low-quality traffic can still produce a poor CPA or ROAS, so CTR is best read alongside conversion metrics rather than on its own.