Amazon glossary
What is CTR?
CTR — Click-Through Rate.
By AIAdKing Editorial Team · Reviewed
- CTR — Click-Through Rate
- CTR (Click-Through Rate) = clicks ÷ impressions × 100. It shows how often shoppers who see your ad actually click it. A low CTR usually means your image, title or price isn’t compelling for that search, or the search isn’t relevant.
In depth
CTR measures how appealing your ad tile is to the shoppers who see it — main image, title, price, review stars and the Prime badge doing their work in a fraction of a second. Typical Sponsored Products CTR sits around a few tenths of a percent, so 0.4% is unremarkable and 1%+ is strong for most categories. Its profitability role is diagnostic: high impressions with low CTR means you are being seen and passed over, and the cause is either a mismatched search (fix with negative keywords) or a weak tile (fix the image, price or title — the listing optimization guide covers the order of operations). CTR also feeds relevance: ads that get clicked win auctions more cheaply over time, so a better main image quietly lowers your effective CPC as well.
Formula
CTR % = (Clicks ÷ Impressions) × 100
Worked example
Two keywords, both with 10,000 impressions in a month. "steel water bottle 1l" gets 180 clicks — 1.8% CTR; "water bottle" gets 40 — 0.4% CTR. For the weak one, ask which half is broken: if the searches are relevant but your tile loses, the main image or price is the problem; if the searches are mismatched ("water bottle for dogs" against your gym bottle), negate them. And remember CTR pays no bills by itself — a 1.8%-CTR keyword converting 2% of clicks is a worse buy than a 0.9%-CTR keyword converting 12%.
When to use it
Read CTR whenever a keyword has plenty of impressions but disappointing clicks, and when testing main images — CTR is the first metric a better image moves. Always read it next to conversion rate; a clicky ad that doesn't convert just spends faster.
Common mistakes
- Treating CTR as a score to maximise — clickbaity images that inflate CTR while conversion collapses raise spend and ACoS simultaneously.
- Comparing CTR across placements — top-of-search naturally clicks far better than product-page placements; compare like with like.
- Ignoring the compounding effect — persistently low CTR degrades your auction relevance, so the same bid buys fewer impressions over time.
How AIAdKing handles CTR
AIAdKing uses CTR and conversion signals together to tell a weak listing apart from a weak search term — harvesting the bad searches as negatives and surfacing listings that need a better image or title.
CTR — quick answers
What is CTR?
How does AIAdKing handle CTR?
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