Quality Score is one of the most misunderstood metrics in Google Ads. Advertisers treat it like a report card: obsess over the number, try to game it, or ignore it entirely. None of those approaches is quite right.
Here's what Quality Score is actually telling you, and what to do about it.
What Quality Score Is
Quality Score is a 1–10 rating Google assigns to each keyword in your account, updated in real time. It's built from three components: expected click-through rate (how likely someone is to click your ad when shown for that keyword), ad relevance (how closely your ad matches the intent of the keyword), and landing page experience (how useful and relevant your landing page is to someone who clicked).
Each component is rated below average, average, or above average. The combination produces your Quality Score.
Google uses Quality Score as one input in Ad Rank: the calculation that determines where your ad appears and how much you pay per click. Higher Quality Score generally means better placement and lower cost per click for the same bid.
What a Low Quality Score Is Telling You
A Quality Score of 1–4 almost always means one of three things:
- Your ad copy doesn't match the keyword well enough for Google to consider it relevant
- Historical click-through rates for your ads on that keyword are low, suggesting your ads aren't compelling
- Your landing page doesn't closely reflect what the keyword is about
A low score on expected CTR usually means the ad copy needs work. The headline isn't creating enough reason to click. A low score on ad relevance means the keyword and ad aren't talking about the same thing. A low landing page experience score means your page isn't what someone expected to land on.
The most common cause of a low score across the board: someone added a broad set of keywords to a single ad group and pointed them all at the homepage. The keyword, ad, and page are all misaligned with each other.
What a High Quality Score Is Telling You
A Quality Score of 7–10 means the keyword, the ad, and the landing page are well-aligned. People searching for that keyword are finding your ad relevant and clicking, and the landing page is delivering what they expected.
This is good for your costs and your placement, but it doesn't tell you whether the keyword is actually driving business results. A keyword can have a Quality Score of 10 and still produce zero conversions if the search intent doesn't match the stage in the buying process you're targeting.
What Quality Score Is Not
Quality Score is not a real-time bidding signal. Google uses a calculation called Ad Rank in each auction, which factors in bid, auction-time Quality Score signals, and context. The Quality Score you see in the interface is a diagnostic tool, a historical average, not the exact number used in each auction.
It's also not the only thing that matters. A low Quality Score on a keyword that drives profitable conversions is worth more than a high Quality Score on a keyword that doesn't convert. Don't pause keywords based on Quality Score alone.
The Practical Fix for Most Accounts
If you have widespread low Quality Scores, the structural fix is tighter ad groups. Group keywords by specific intent, write ad copy that directly addresses that intent, and build or designate landing pages that match what someone who searched that keyword is looking for.
The classic structure: one or two closely related keywords per ad group, ad headlines that include or directly reflect the keyword, landing page content that opens with the same topic the keyword addressed.
This is more work to set up than broad groupings, but the payoff in lower CPCs and better placement is significant over time.
One Number Worth Watching
Rather than tracking individual keyword scores obsessively, calculate a spend-weighted average Quality Score across your account. Sum (Quality Score × Impressions) divided by total impressions for a given period.
If that average is below 6, you have a structural issue worth addressing systematically. If it's 7 or above, focus your attention on conversion rate and bid efficiency rather than Quality Score.
Quality Score is Google telling you whether your keyword, your ad, and your page are speaking the same language. When they're not, you pay more for worse placement. When they are, the auction works in your favour.
Frequently Asked Questions
Does Quality Score directly affect my cost per conversion?
Indirectly, yes. A higher Quality Score lowers your cost per click by improving your Ad Rank position without requiring a higher bid. Lower CPC with the same conversion rate means lower cost per conversion. The relationship isn't always linear, but the direction is consistent.
Should I pause low Quality Score keywords?
Not automatically. If the keyword is driving conversions at an acceptable cost, a low Quality Score is a signal to improve the alignment, not a reason to pause. If a keyword has a low Quality Score and isn't converting, that's a stronger case for pausing or restructuring.
How long does it take for Quality Score to improve after I make changes?
Quality Score is updated based on historical data as new impressions accumulate. Changes to ad copy or landing pages start influencing the score as new data comes in, but you typically need 30–90 days of data for a reliable read. Don't make multiple changes at once if you want to understand which one drove the improvement.
Does Quality Score matter for Performance Max campaigns?
Performance Max doesn't use keyword-level Quality Score in the same way. PMax uses asset quality signals and audience signals instead. Quality Score is most relevant to standard Search campaigns with keyword targeting.
