It’s easy to treat Quality Score like a dial you can turn. You might see a 3 or a 4 next to a keyword, decide that you need to “fix the Quality Score,” and go looking for a lever to pull. There usually isn’t one.
Quality Score is a diagnostic, not a control. It’s a number that reports back on decisions you’ve already made about your ads, your structure, and your landing pages. You don’t optimise the score. You fix the things the score is measuring, and the number tends to follow.
Once that clicks, Quality Score stops being a vanity metric you feel guilty about and becomes what it was designed to be: a faster way to find weaker links in your account.
Here’s how it works, and what to do with it.
What Quality Score is really measuring
The 1-10 number you see in the keywords tab is a composite of three separate judgements Google makes about each keyword:
- Expected CTR – how likely someone is to click your ad.
- Ad Relevance – how closely your ad matches the intent behind the search.
- Landing Page Experience – how relevant and useful your page is to the clicker.
Each one is reported as a status: Above Average, Average, or Below Average. That distinction matters more than the headline score. A keyword sitting at 5/10 tells you something is wrong. The three component statuses tell you what’s wrong.
This is the first mistake to unlearn. Staring at the composite number is like staring at a car’s temperature and revving the engine. Look at the components. That’s where the information is.
A quick note on how the score is calculated: Google bases Quality Score on exact-match impressions. If a broad match keyword triggers a search, Google judges you as if that query were an exact match. So, a keyword with very little exact-match traffic may show “–” for Quality Score and simply changing match types will not change it.
The Three Components, and What Actually Moves Them
Expected CTR is a competitiveness signal. It answers a simple question. When your ad shows, do people click it more often than when they click your competition?
Position is normalised out, so you can’t buy your way to a better Expected CTR by bidding higher. What moves it is message strength, such as sharper headlines, a clearer offer, real differentiation, social proof. If your ad reads like every other ad in the auction, this is where it shows up. Expected CTR updates in real time, every auction.
Ad Relevance is a structural signal, and this is the one people misdiagnose most often. When Ad Relevance is Below Average, the instinct is to rewrite the ad. Usually the real problem is the ad group. If you’ve stuffed keywords with different intents into one ad group, no single ad can be relevant to all of them. The fix isn’t better copy, its tighter structure, i.e. split the ad group so each one holds a single, coherent theme, then let the ad speak to that theme. Ad Relevance usually updates over weeks.
Landing Page Experience is about whether the page keeps the promise the ad made. Message match is the big lever here. Does the page headline represent the ad, or does the visitor land somewhere generic and must browse around? Speed, mobile usability, and trust signals all matter too. Google also leans on behavioural signals, and conversion rate acts as a proxy. Pages that convert well are telling Google that visitors found what they came for. This component is the slowest to update, often taking several weeks.
Notice that each component has a different lever, and they don’t overlap. Rewriting your ad will not fix a slow landing page. Speeding up your page will not fix a scattered ad group. If you try to fix everything at once, you’ll never know what worked.
Where Quality Score Sits in the Auction
To understand why Quality Score matters commercially, you must understand Ad Rank, because Ad Rank is what actually decides whether your ad shows and where.
The formula:
Ad Rank = Bid x Ad Quality x Expected Impact of Extensions (+ thresholds)
Quality is the multiplier. Two advertisers can bid the same amount and land in completely different positions because one is of stronger quality. Better quality means you either win a higher position at the same bid or hold the same position at a lower cost. That’s the whole commercial case for caring about this. Essentially, quality is what lets you pay less than the advertiser sitting next to you.
Now the part almost nobody talks about, and the reason so much Quality Score advice is a waste of time.
The 1-10 number you see in the interface is not what runs in the auction.
The visible Quality Score is a lagging, simplified snapshot at the keyword level. The quality Google uses in the auction is calculated fresh for every single auction, at the level of the individual query, device, location, time of day, and audience. It draws on far more signals than the three you can see. Your visible score might read 7 while the real-time quality Google assigns can vary auction by auction.
Fix the components, and the number and auction performance both improve, because they’re both downstream of the same work.
The Bottom Line
Quality Score isn’t a button. It’s a readout.
The 1-10 number tells you a keyword is struggling, the three components tell you why, and the auction rewards you for fixing the underlying cause rather than the symptom.
Stop asking “how do I raise my Quality Score.”
Start asking “which component is Below Average, and what’s the reason.”
Fix that, one at a time, and give it time to register. Do that consistently and the score climbs on its own, your CPCs fall, and your ads win more of the auctions that matter.
The number was never the point. It was always just pointing you at the work you needed to do to improve it.
