Is Domain Authority a Google Ranking Factor?
It's one of the most persistent myths in SEO: that improving your Domain Authority will lift your Google rankings. The short answer is no — Google does not use Domain Authority. But the longer answer is more useful, because it explains why DA still seems to predict rankings and how to use it correctly without being misled.
The honest answer: no, Google doesn't use DA
Domain Authority is a metric created by Moz, a third-party SEO company. It is not part of Google's algorithm, and Google has no access to it. The same is true of Ahrefs' Domain Rating and every other third-party "authority" score. These tools were built to give marketers a comparable estimate of authority — they are external models, not inputs Google reads. (For the full set of metrics and where they come from, see our guide to website authority.)
What Google has actually said
Google representatives have stated plainly and repeatedly that there is no single "domain authority" or "website authority score" used in ranking. Google evaluates pages on hundreds of signals — relevance, content quality, links, user experience, and more — but it does not maintain one overall authority number for a domain, and it certainly doesn't pull Moz's or Ahrefs' figures. So when someone claims "Google rewards high DA," that's a misunderstanding of what DA is.
So why does DA seem to predict rankings?
Here's the nuance that trips people up. High-DA sites do tend to rank well — not because of the score, but because of what the score measures. DA is built largely on a site's backlink profile, and a strong, trustworthy backlink profile genuinely helps a site rank. So DA correlates with ranking ability because it's a proxy for something real that Google does value (via its own link assessments and other signals).
The distinction matters: correlation, not causation. Raising your DA number doesn't cause better rankings — but the work that raises DA (earning quality links, publishing great content) is the same work that genuinely improves rankings. They move together, which is why the myth is so sticky.
How to use DA correctly
Once you accept DA is a proxy, it becomes genuinely useful — for the right jobs:
- Competitive benchmarking — compare your authority to the sites ranking for your keywords. See what is a good DA score?
- Link prospecting — gauge the relative strength of a site before pursuing a link from it. See evaluating a site before a backlink.
- Tracking progress — watch your own trend over time as a rough health signal.
What you should not do is treat a DA target as your goal, or assume a higher number automatically means more traffic. Check scores with our Domain Authority Checker and use them as a comparison tool, not a scoreboard.
What to optimize instead
If DA isn't the goal, what is? Focus on the things Google actually rewards, which conveniently also strengthen your authority:
- Relevant, high-quality content that answers real search intent.
- Quality backlinks earned editorially from relevant sites.
- Strong user experience — speed, mobile-friendliness, clear structure.
- Technical health — crawlability, HTTPS, no broken links.
Do these well and your rankings improve and your DA rises — without ever chasing the number directly.
The same applies to DR and MozRank
Domain Rating (Ahrefs) and MozRank (Moz) are also third-party metrics Google doesn't use. Everything here applies equally to them. If you track DR, the logic is identical — see DR vs DA for how they compare. Whichever you watch, it's a proxy, not a ranking input.
Frequently asked questions
Does Google use Domain Authority?
No. DA is a Moz metric and is not part of Google's ranking algorithm. Google has confirmed it doesn't use a single domain authority score.
Then why do high-DA sites rank well?
Because DA reflects a strong backlink profile, which genuinely helps rankings. The score correlates with ranking ability but doesn't cause it.
Is Domain Rating (DR) a ranking factor?
No. DR is Ahrefs' metric and, like DA, isn't used by Google. It's another third-party estimate of link strength.
Should I stop caring about DA entirely?
No — it's still useful for benchmarking against competitors and screening link prospects. Just don't treat it as a goal Google rewards.
Check and benchmark your authority
Use DA the smart way: check your score and your competitors' with our free Domain Authority Checker, then put your energy into the content and links that move both rankings and authority together.