Moz Domain Authority Checker Review

The Moz Domain Authority checker is one of the best known ways to get a single number that estimates how strong a website's link profile is. It is genuinely useful for comparing sites and tracking your own progress, but it is easy to misread if you treat the score as a verdict from Google. This honest review explains what the checker does, what it costs in 2026, where it falls short, and which free alternatives cover the same ground.

What Domain Authority actually is

Domain Authority is a comparative score created by Moz and popularised by its Link Explorer tool. It uses a machine-learning model trained largely on the size and quality of a site's backlink profile, then scales the result from 1 to 100. A higher number suggests a site is more likely to rank well, relative to other sites, based on its links.

The word "relative" is the whole point. DA is designed for comparison, not as an absolute grade. A score of 40 is meaningful only when you set it next to your competitors' scores. Because the scale is logarithmic, climbing from 20 to 30 is far easier than climbing from 60 to 70, and the top of the scale is crowded with the largest sites on the web.

Is Domain Authority a Google ranking factor?

No. This is the single most important thing to understand before you spend money on any authority checker. Google does not use Domain Authority, and Google's own representatives have repeatedly said there is no internal "domain authority" score of this kind. DA is a third-party estimate built by Moz to model ranking potential, not a signal Google reads.

That does not make DA worthless. Links remain a real ranking factor, and because DA is largely link-driven it correlates loosely with ranking strength. The right way to use it is as a directional gauge: is my authority trending up, and how do I compare with the sites I compete against? Treat it as a thermometer, not a diagnosis.

The Moz Domain Authority checker: features

The checker lives inside Moz Link Explorer and the free MozBar browser extension. Depending on your access level you can typically see:

• The Domain Authority and Page Authority scores for any URL.
• Linking root domains, the number of unique sites that link to the target.
• A Spam Score that flags potentially low-quality link patterns.
• Top linking pages and anchor text, which help you understand where authority comes from.

For a quick competitive glance, MozBar overlays DA and PA directly on search results. For deeper work, Link Explorer inside a Moz Pro account lets you export link lists and track them over time.

Moz pricing in 2026

Moz offers a free tier and several paid Moz Pro plans. Pricing changes, so confirm the figures on Moz's current pricing page before you buy, but as a guide in 2026:

• Free account: access to DA and PA through MozBar, plus a small monthly allowance of free Link Explorer and keyword queries.
• Entry Moz Pro plan: starts around 49 US dollars per month, less if you pay annually, aimed at solo owners and small sites.
• Higher Moz Pro plans: rise into the low hundreds of dollars per month as you add tracked keywords, sites, and crawl capacity.

The paid plans bundle far more than the DA checker: rank tracking, site crawls, keyword research, and reporting. If all you want is an occasional authority score, the free options are usually enough and you do not need a subscription at all.

Where the checker falls short

• It is not a Google metric, so chasing DA for its own sake can distract from work that actually moves rankings.
• Score fluctuations happen on Moz's schedule, not yours. When Moz updates its index and model, your DA can move even if nothing about your site changed.
• The free allowance is limited. Serious link research quickly runs into query caps unless you upgrade.
• Different tools report different numbers. Moz DA, and the equivalents from other vendors, are separate estimates and will not agree, so never compare a Moz score against a rival tool's score.

Free alternatives to the Moz DA checker

Several reputable tools report their own authority-style metric, and most offer a free tier that is plenty for spot checks:

• Ahrefs Website Authority Checker reports a free Domain Rating (DR) score for any domain. See our Ahrefs backlink checker review for how its free tools work.
• Google Search Console does not give an authority score, but it shows your real backlinks and top linking sites for free, which is more actionable than any single number.
• Bing Webmaster Tools similarly reports inbound links to your verified site at no cost.
• Various free web-based authority checkers query Moz's public API and show DA without a Moz login, though they inherit the same limits.

If you mainly want a quick number for your own domain, start with a general-purpose domain authority checker or a broader site authority checker, then verify the underlying links in Search Console. For a like-for-like comparison of Moz's shorter-branded tool, see our Moz DA checker review.

Should you pay for Moz just for DA?

For most site owners, no. The DA score is available for free through MozBar and limited Link Explorer queries, and other vendors offer comparable free authority metrics. Pay for Moz Pro only if you will use the full platform: rank tracking, ongoing site crawls, keyword research, and reporting. Buying a subscription to watch one number tick up is rarely worth it, and the number itself is a proxy, not the goal. The goal is more relevant content earning more genuine links.

Frequently asked questions

Is Moz Domain Authority a Google ranking factor?

No. Domain Authority is Moz's own predictive score and Google does not use it. Google representatives have said there is no internal domain authority metric of this kind. DA is useful for comparing sites and tracking trends, but it is a third-party estimate rather than a signal Google reads.

How can I check Domain Authority for free?

You can install the free MozBar browser extension to see DA and Page Authority on any page and in search results, and you get a limited number of free Link Explorer queries with a free Moz account. Other vendors, such as the Ahrefs Website Authority Checker, also report a free authority score for any domain.

How much does Moz Pro cost in 2026?

Moz Pro plans start around 49 US dollars per month, with a discount for annual billing, and higher tiers rise into the low hundreds of dollars per month as you add tracked keywords, sites, and crawl capacity. Pricing changes over time, so check Moz's current pricing page before subscribing.

What is a good Domain Authority score?

There is no universal "good" score because DA is comparative and logarithmic. A score only means something next to your competitors. In a low-competition niche a DA in the 20s to 30s can be strong, while in a competitive one you may need much more. Focus on trending upward relative to the sites you compete against.

Why does my Domain Authority change on its own?

DA can move when Moz updates its index and recalculates the model, even if your site did not change. Your competitors' link profiles and the overall scale can shift too. Because of this, treat short-term swings as noise and watch the longer-term trend instead.

What are the best free alternatives to the Moz DA checker?

Good free options include the Ahrefs Website Authority Checker for a Domain Rating score, Google Search Console and Bing Webmaster Tools for your real backlinks, and various free web tools that display Moz DA without a login. For your own domain, combining a free authority checker with Search Console gives the most actionable picture.