CTR Calculator (Click-Through Rate)
CTR measures how often people who see something click it. Enter impressions and clicks for the rate — with context benchmarks, because a "good" CTR in display advertising would be a disaster in search.
How to use this calculator
- Enter total clicks and impressions from your platform report.
- Press Calculate and compare against the channel benchmark rows.
- Compare like with like — CTR differs by an order of magnitude across channels.
Formula used
Impressions count how many times the ad/result/email was shown, not unique viewers — one person seeing an ad five times is five impressions. That's also why frequency inflation quietly depresses CTR over a campaign's life.
Example calculation
420 clicks from 12,000 impressions: CTR = 3.5% — healthy for search ads, spectacular for display.
Equivalently, 35 clicks per 1,000 impressions.
What CTR really signals
CTR is a relevance meter: it measures whether the promise (headline, creative, subject line) matches what the audience wants at that moment. Platforms read it the same way — Google's Quality Score and email providers' sender reputation both reward high CTR with cheaper clicks and better placement, making CTR improvements compound.
Its limit: CTR knows nothing about what happens after the click. A clickbait ad can score a brilliant CTR and a terrible conversion rate — so CTR diagnoses attention, while conversion rate diagnoses the promise being kept.
Why use this calculator?
- Grade ad copy and subject lines with the metric platforms themselves reward.
- Benchmark against the right channel instead of a meaningless global average.
- Detect creative fatigue: a sliding CTR at stable spend usually means frequency has crept up.
Frequently asked questions
What is a good CTR?
By channel: search ads 3–6%, display 0.3–0.6%, social feed ads ~1%, email clicks 2–3% of delivered. Branded search can exceed 20%. Compare against your own history first — trend beats benchmark.
How can I improve my CTR?
Tighten the match between promise and audience: put the keyword or pain point in the headline, add specificity (numbers, timeframes), test creatives against each other, and prune placements or audiences where relevance is inherently low.
Does a higher CTR lower my cost per click?
In auction systems, usually yes — expected CTR feeds quality scores, and higher quality wins cheaper placements. Doubling CTR often meaningfully cuts CPC on search platforms.