Click-Through Rate
The percentage of people who click a link, ad, or CTA out of the total who saw it — a key engagement metric in CRO and paid media.
Click-through rate (CTR) is the percentage of people who click on a specific link, ad, or call-to-action element out of the total number of people who viewed it.
Formula: CTR = (Clicks ÷ Impressions) × 100
If 1,000 people see your email and 45 click a link, your CTR is 4.5%.
Where CTR Matters in CRO
CTR is a leading indicator — it tells you whether your messaging and design are compelling people to take the next step, before you’ve measured the final conversion.
| Channel | What CTR Measures |
|---|---|
| Email campaigns | Link clicks ÷ delivered emails |
| Paid search ads | Ad clicks ÷ ad impressions |
| Display/banner ads | Ad clicks ÷ ad impressions |
| CTA buttons | Button clicks ÷ page visitors |
| Internal links | Link clicks ÷ page visitors |
CTR vs Conversion Rate
A common mistake is optimising purely for CTR without considering what comes after the click.
High CTR, low conversion rate = Your headline is compelling but the landing page doesn’t deliver on the promise. The messaging mismatch is killing conversions downstream.
Low CTR, high conversion rate = Few people click, but those who do are highly qualified and convert well. This can be intentional — a specific CTA filters for serious buyers.
The goal is qualified clicks, not just more clicks.
What Drives CTR on CTA Buttons
The single biggest lever for CTA button CTR is copy. Switching from passive, generic copy to first-person, benefit-led copy consistently increases CTR by 10–30%:
| Weak Copy | Strong Copy |
|---|---|
| Submit | Get My Free Audit |
| Click here | Show Me the Report |
| Learn more | See How It Works |
| Sign up | Start Saving Today |
Visual contrast is the second lever — a button that blends into the page is invisible. Test your button colour against the background using a contrast checker.
CTR Benchmarks by Channel
- Google Search Ads: 6–8% average; top performers 10–15%
- Email (B2B): 2–5% average; top performers 8–12%
- Display advertising: 0.1–0.3% average
- Landing page CTA button: 3–10% depending on offer and page intent
Use these as orientation, not gospel. Your own historical CTR is always the most relevant benchmark. In any CRO programme, CTR improvement on key CTAs is one of the fastest wins available.
Frequently Asked Questions
What is a good click-through rate?
It depends heavily on the channel. Email CTR averages 2–5% (with top performers at 8–10%). Google Search Ads average 6–8% CTR. Display ads average 0.1–0.3%. On landing pages, CTA button CTR should be 3–10% depending on placement and offer. Always benchmark against your own historical performance rather than industry averages alone.
What is the difference between CTR and conversion rate?
CTR measures clicks divided by impressions — how many people clicked. Conversion rate measures conversions divided by visitors — how many people completed the goal. CTR is an engagement metric; conversion rate is an outcome metric. You can have high CTR with low conversion rate (ad attracts clicks but the landing page fails) or low CTR with high conversion rate (few click, but most who do convert).
How do you improve click-through rate on a CTA button?
The four highest-impact CTR improvements for CTA buttons: (1) rewrite the button copy from generic ('Submit', 'Click here') to benefit-led ('Get My Free Audit', 'Start Saving Money'), (2) increase visual contrast — the button must stand out from the surrounding design, (3) add microcopy directly below the button addressing the main objection ('No credit card required', 'Cancel anytime'), (4) test button placement — above the fold performs significantly better than below on most landing pages.