Domain Authority Checker: What DA Does and Doesn’t Mean

A domain authority checker is a tool, often free, that gives your website a score from 1 to 100, predicting how well it might rank compared with other sites. You type in your domain, the tool returns a number, and that is it.

Here is the catch: the number is not a Google score. It is an estimate made by a third-party company. It can be a useful yardstick, but it should never be the thing that steers your SEO. Dex will show you why, and what to look at instead.

What is domain authority?

Domain authority (DA) is a metric created by Moz. It estimates how likely a whole website is to rank in search results, on a scale of 1 to 100. Higher means stronger. Other companies have their own versions, such as Domain Rating (Ahrefs) and Authority Score (Semrush). They all aim at the same idea, but they calculate it differently, so the numbers do not match from tool to tool.

What goes into the score

Each vendor keeps its formula private, but the big input is generally the backlink profile: how many other sites link to you, and how trustworthy those linking sites look. Some tools also factor in things like the number of linking domains and link quality.

Why the score is relative

The scale is logarithmic in most tools, which means going from 20 to 30 is easier than going from 60 to 70. The score also moves when the tool updates its own index, even if you did nothing. A drop of a few points does not necessarily mean your site got worse.

• It is a comparison tool. It is most useful for comparing your site against competitors, using the same checker for each.
• It is a prediction. It describes likelihood, not a guaranteed outcome.
• It is domain-wide. It does not tell you how a single page will perform.

Does Google use domain authority?

No. Google has said publicly that it does not use Domain Authority, and the metric belongs to Moz, not Google. Google does use links as a signal, and it has long used ideas about site-level quality and trust. But there is no public number inside Google that matches a DA score.

So think of DA as a shadow on the wall. It is cast by real things (links, age, reputation), but it is not the thing itself.

Why people still care

Because the score often correlates with real-world strength. Sites with many good links tend to rank for competitive searches, and DA tends to be higher for those sites. Correlation is useful for a quick sense check. It is not proof that raising the number will raise your rankings.

What not to do

• Do not buy links just to bump the score. Paid link schemes can break Google’s spam policies.
• Do not treat a rise in DA as a win by itself. Clicks and rankings are the win.
• Do not compare your DA from one tool to a competitor’s from another.

How do you check your domain authority for free?

Several tools offer a limited free check. The steps are almost the same everywhere:

1. Pick one checker (Moz’s free Link Explorer, Ahrefs’ free authority checker, or similar).
2. Enter your domain, such as yourbakery.com.
3. Note the score and the number of linking domains.
4. Repeat for three to five competitors that rank for searches you want.
5. Write the numbers down in one place and re-check on a schedule, for example monthly.

Stick to one tool. Switching mid-way ruins the comparison, since each has its own scale and index.

New sites often show a low or empty score

If your site is new, a score of 1 or a message saying there is not enough data is normal. It does not mean something is broken. It means few other sites link to you yet, or the tool has not seen those links.

What the free checkers leave out

A DA number will not tell you which keywords you could rank for, which pages need work, or what you are already close to ranking for. For that, you need keyword and Search Console data. Google Search Console is free and shows the searches your site already appears for, with real clicks and impressions. That is why Dex starts from keywords and Search Console, not from a DA number.

Can a low-authority site still rank?

Yes. This is the part most DA articles skip. Rankings happen search by search, not site by site. A small site can beat a large one on a specific query when it answers that query better, is more relevant, or targets a niche the big site ignores.

Think of a local dentist. A national health portal has far more authority, but it will usually struggle to compete for “emergency dentist open Sunday in your town”. A small, focused page often can.

Where low-authority sites win

• Long, specific searches. Fewer people search them, but the competition is thinner and the intent is clearer.
• Local searches. Proximity and relevance count for a lot.
• Topics where the big sites are vague. A precise, well-fact-checked answer can stand out.
• Fresh topics. New products, new regulations or new trends often have not been claimed yet.

Where they struggle

Broad, high-volume head terms such as “insurance” or “running shoes” are dominated by sites with years of links and brand searches. Going after those with a new site is usually a slow grind, and results depend on competition and site history.

How do you pick keywords that fit your authority?

This is where DA becomes practical. Instead of asking “how do I raise my score?”, ask “which searches can my site realistically win now?” To answer, weigh three things together:

1. Volume: how many people search it per month.
2. Difficulty: how strong the pages already ranking are (often shown as a KD score).
3. Proximity: how close your site already is to ranking, for example a page sitting on page two.

Here is an illustrative example. Say a bakery site has a low DA. One keyword has 8,000 searches and a KD of 70. Another has 300 searches and a KD of 12. The first sounds great, but the top results are probably strong sites. The second is small, yet it is realistic, and a handful of those wins adds up. (These numbers are illustrative only.)

A simple rule of thumb

Start with keywords where the difficulty looks reachable for your site, then climb as your pages earn rankings and links. Check what the current top results look like. If they are all giant brands, move on. If you see small sites or thin pages, there is room. Dex’s take: winnable beats impressive.

Where Dex fits

This is exactly the job Dex does. It scores every keyword by volume, difficulty and how close your site already is to ranking, so the plan focuses on searches you can actually win rather than ones that only look impressive. You can see it for yourself: paste your website into the free SEO plan, and Dex reads your pages, learns what you sell, who you sell to and how you talk, then delivers a plan in 60 seconds. No card required.

FAQ

What is a good domain authority score?

It depends on your competitors. A score of 25 can be strong in a quiet local niche and weak in a crowded one. Compare against the sites you actually compete with, using the same tool.

Is domain authority a Google ranking factor?

No. It is a third-party metric. Google has said it does not use it. Links and overall quality still matter, but DA is only an outside estimate of them.

How can I increase my domain authority?

Earn links from relevant, reputable sites by publishing useful content people want to reference. Avoid buying links. Scores move slowly, and the timeline depends on your competition and site history.

Why do different checkers show different scores?

Each company uses its own data and formula. Scores are not interchangeable, so pick one tool and track changes in that tool only.

Should I ignore DA completely?

Not completely. Use it as a rough comparison with competitors, then base your decisions on keywords, rankings and real clicks from Search Console.

Want a plan built around your site, not a score?

A domain authority number is a starting point, not a strategy. If you want to know which searches your site can win, get in touch with Dex SEO or run the free SEO plan on your website. Dex does the keyword research, writing, publishing and reporting, so you can focus on the business. Results depend on your competition and site history, but you will know where to aim. Stop chasing a number. Start winning searches.

Dex SEO

Dex SEO is an AI SEO agent for small businesses. Every article here is planned from search data, drafted by Dex, fact-checked against the sources it cites, and reviewed by the team before it is published.

How this article was made: drafted with AI, fact-checked against the sources listed above, then edited and approved by the Dex SEO team.