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Paid Marketing Definition

Ad Rank

Google's system for determining the position and eligibility of ads in search results, based on bid, Quality Score, and other factors.

Full definition

Ad Rank determines whether an ad shows and in what position. It is calculated using: your bid amount, Quality Score (estimated CTR, ad relevance, landing page experience), the context of the search (device, location, time, query), and ad extensions. Crucially, a lower bid with a higher Quality Score can outrank a higher bid with a poor Quality Score. This means improving ad relevance and landing page experience is often more cost-effective than simply increasing bids. Ad Rank thresholds also determine whether an ad shows at all — ads must meet a minimum Ad Rank to appear, regardless of the bid.

Real-world example

Advertiser A bids £2.00 with a Quality Score of 9 (Ad Rank 18). Advertiser B bids £3.50 with a Quality Score of 4 (Ad Rank 14). Advertiser A gets the higher position and pays less per click.

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