7 Best Domain Authority Checkers Compared (2026)

The best domain authority checker is the one that gives you a trusted authority score in seconds, without a paywall or a signup form in the way. Most people typing that search aren't shopping for a metric definition; they want a box where they paste a domain and get a number. We tested seven real tools that do exactly that, then compared them on the metric they use, their free limits, whether they force a login, and who each one actually suits.

One quick disclosure up front: tool #1 on this list is ours. We built it, so treat that ranking with healthy skepticism and judge it on the same criteria as the rest. Everything below is based on hands-on use as of 2026.

What "domain authority" actually means before you pick a checker

"Domain authority" gets used as a catch-all, but no single company owns the concept. Moz coined Domain Authority (DA), a 1-to-100 score predicting how likely a site is to rank, calculated from its link profile using a machine-learning model trained against Google results. Ahrefs has its own metric, Domain Rating (DR), a 0-to-100 logarithmic score based purely on the strength of a site's backlink profile. Semrush uses Authority Score, which blends backlinks, organic traffic, and spam signals.

These numbers are not interchangeable. A site can sit at DR 60 on Ahrefs and DA 45 on Moz because the underlying link indexes and formulas differ. If you want the full breakdown, we cover it in DR vs DA: Domain Rating and Domain Authority Explained. The practical takeaway: pick a checker, then compare every site against that same tool so your numbers stay consistent.

If you'd rather skip the theory and just see a live score, you can paste any domain into our free domain rating checker and read its Ahrefs-based DR instantly. No account, no trial countdown.

The 7 best domain authority checkers compared

Here's the side-by-side. "Metric" is the authority score each tool reports. "Free limit" reflects what you can pull without paying as of 2026 — these caps change, so treat them as a guide.

Tool	Metric used	Free limit	Signup required	Best for
Indexed Domain Rating Checker (ours)	Ahrefs-based DR	Unlimited single lookups	No	Fast, free DR checks on any domain
Ahrefs free DR checker	Domain Rating (DR)	Limited daily lookups	No	Checking DR straight from the source
Moz Link Explorer / Domain Analysis	Domain Authority (DA)	~10 queries/month	Yes (free account)	Anyone who specifically needs DA
Semrush Authority Score	Authority Score	Limited daily requests	Yes (free account)	Authority blended with traffic data
Small SEO Tools DA Checker	Reports DA/PA	Bulk, several domains at once	No	Quick bulk DA spot-checks
Ubersuggest	Domain Authority (own model)	~3 searches/day	Yes for full data	Beginners wanting extra metrics
SEO Review Tools DA Checker	Reports DA/PA	Bulk lookups, no login	No	Free bulk DA without an account

1. Indexed Domain Rating Checker (ours) — best free DR checker

We built our checker to remove the friction that frustrated us in other tools. You enter a domain, and it returns that site's Ahrefs-based Domain Rating right away. There's no signup, no email gate, and no trial timer. Because it draws on live Ahrefs DR data, the number lines up with what you'd see inside Ahrefs itself, which matters when you're vetting backlink prospects or tracking your own progress.

It does one job and does it cleanly: free, instant DR for any domain. If you also want link counts, keyword data, or a full audit, you'll still want a paid suite. But for the single most common task — "what's this site's authority?" — it's the fastest path we know of, which is exactly why we list it first as the best free DR checker.

2. Ahrefs free DR checker — the metric from the source

Ahrefs publishes a free Website Authority Checker that returns DR with no login. Since DR is Ahrefs' own metric, this is as authoritative as it gets for that number. The catch is a tight daily lookup cap, after which you're nudged toward a paid plan. Ahrefs is also transparent about how DR works in its guide to Domain Rating, which is worth reading once so you understand what the score does and doesn't measure.

Use the Ahrefs free tool when you want DR directly from the company that invented it and you only need a handful of checks per day.

3. Moz Link Explorer / Domain Analysis — the home of DA

If your workflow, your client, or your link-building spreadsheet is built around Moz's Domain Authority, go to the source. Moz's Link Explorer reports DA and Page Authority along with linking domains and spam score. You'll need a free Moz account, and the free tier limits you to roughly ten queries a month before prompting an upgrade.

Moz documents its model clearly; its Domain Authority explainer notes the score is a comparative, machine-learning-based prediction of ranking strength, not a Google ranking factor. Pick Moz when DA specifically is the number you're held to.

4. Semrush Authority Score — authority plus traffic

Semrush's Authority Score is the most composite metric on this list. Rather than scoring links alone, it factors in backlink quality, organic search traffic, and a spam-detection layer, which Semrush outlines in its Authority Score documentation. That makes it useful when you want a single number that already accounts for whether a site actually pulls traffic, not just whether it has links.

The trade-off is access. You'll want a free Semrush account, and meaningful daily request limits apply before the paywall. Choose Semrush when you live in its ecosystem already and value the traffic dimension baked into the score.

5. Small SEO Tools DA Checker — quick bulk spot-checks

Small SEO Tools offers a no-login DA checker that accepts several domains at once and returns DA and PA figures. It's convenient for a fast bulk glance — say, scanning a list of guest-post targets. Treat the numbers as approximations of Moz-style DA rather than gospel; third-party scrapers can lag or round. It's a handy convenience tool, not a system of record.

6. Ubersuggest — beginner-friendly with extras

Ubersuggest reports its own domain authority score alongside keyword ideas, traffic estimates, and backlink data, which makes it approachable for people newer to SEO. The free tier is generous on features but stingy on volume — roughly three searches a day before it asks you to register or upgrade. Good as a starter dashboard; less suited to high-volume authority checking.

7. SEO Review Tools DA Checker — free bulk, no account

SEO Review Tools rounds out the list with a free bulk DA/PA checker that doesn't require an account. Like Small SEO Tools, it's built for speed over precision and surfaces Moz-style authority figures. If you need to eyeball authority across a batch of domains without logging in anywhere, it does the job.

How to choose the best DA checker tools for your workflow

The right pick comes down to which metric you're accountable to and how many checks you run. A few rules of thumb:

• You need a fast, free number on any domain: use our checker or the Ahrefs free DR tool — both skip the signup.
• Your reports or clients are pinned to Moz DA: use Moz Link Explorer so the number matches what they expect.
• You want authority weighted by real traffic: Semrush Authority Score is the most complete single figure.
• You're checking many domains at once: bulk tools like SEO Review Tools work, with the caveat that accuracy is approximate.

Whatever you choose, the cardinal rule is consistency: never compare a DR from one tool against a DA from another and conclude one site is "stronger." They're different scales. To ground all of this in what authority actually represents and how to track it over time, read Website Authority: What It Is and How to Check It.

Why a free DR checker is enough for most people

Paid suites are worth it when you're doing deep backlink analysis or competitive research. But for the everyday question — "is this domain authoritative enough to matter?" — a free DR check answers it in seconds. Remember that all of these scores are relative predictors built by third parties, not signals Google reads directly. Google has repeatedly said it has no concept called "domain authority" in its SEO documentation. So use authority scores to compare sites and track trends, not as a literal ranking guarantee.

FAQ

What is the best domain authority checker in 2026?

For a fast, free score on any domain with no signup, our Indexed Domain Rating Checker and the Ahrefs free DR checker are the strongest picks because both return an Ahrefs-based DR instantly. If you specifically need Moz's Domain Authority metric, Moz Link Explorer is the authoritative source for that number.

What is the best free DR checker?

The best free DR checker is one that returns Ahrefs Domain Rating without a paywall or login. Our checker does this for unlimited single lookups, and Ahrefs' own free tool returns DR straight from the source within a daily limit. Both report the same DR scale, so they're directly comparable.

Are free domain authority checkers accurate?

Tools that pull DR or DA directly from Ahrefs or Moz are accurate to those companies' published scores. Third-party bulk scrapers that report "DA" can lag or round, so treat their figures as approximations. For a number you can trust, use a checker that sources the metric from Ahrefs or Moz directly rather than estimating it.

Is Domain Rating or Domain Authority better?

Neither is universally better — they measure different things. DR scores backlink-profile strength, while Moz's DA predicts ranking ability using a broader link-based model, and Semrush's Authority Score adds traffic and spam signals. Choose the metric your team or clients already use, and stay consistent so comparisons remain valid.

Do I need to pay for a domain authority checker?

No. For the common task of checking a site's authority score, free tools are enough. You only need a paid plan for deep work like full backlink exports, historical tracking, or large-scale audits. Most people are well served by a free DR or DA lookup.

Related reading

• DR vs DA: Domain Rating and Domain Authority Explained
• Website Authority: What It Is and How to Check It
• What Is a Good Domain Rating? DR Benchmarks Explained
• How to Improve Moz Domain Authority
• 150+ High Domain Authority Sites for Backlinks (Free List)