About the CTR Calculator
Click-through rate (CTR): clicks as a percentage of impressions for ads, emails and search results.
Also known as: click through rate, ctr formula, email ctr, search ctr.
How to use this calculator
- Enter clicks, impressions.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Open “Step-by-step” to see how the answer was worked out.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
CTR = Clicks ÷ Impressions × 100
Worked example
Using the values pre-filled in the calculator above:
- Clicks = 450
- Impressions = 18,000
the calculator returns:
- CTR: 2.5%
Working
CTR = 450 ÷ 18,000 × 100 = 2.5%