Make the metric fit the decision
Domain Rating vs Domain Authority: What’s the Difference?
A practical comparison for understanding two familiar scores without treating either one as a Google verdict.
The short answer
Domain Rating (DR) belongs to Ahrefs. Domain Authority (DA) belongs to Moz. They are separate third-party metrics built from different link indexes and models, so a DR score cannot be converted into a DA score.
Both use a roughly 0–100-style range, but neither is a Google metric or a direct Google ranking factor. Use one consistently for a defined comparison, then inspect the actual page, audience, and context behind the number.
DR and DA answer different questions
Ahrefs defines Domain Rating as a measure of the relative strength of a website’s backlink profile compared with other websites in its database. Moz describes Domain Authority as a proprietary 1–100 metric that predicts how well a domain may rank in Google using a machine-learning model of link metrics. Those descriptions overlap around links, but they are not the same job.
The distinction matters because “authority” sounds like a property that belongs to the domain itself. In practice, DR and DA are measurements produced by their vendors. Google does not publish either score, and a high number does not guarantee visibility, traffic, or a ranking outcome.
If you need the Ahrefs metric for a quick check, the free Domain Rating checker returns Ahrefs DR. It does not calculate Moz DA.
Domain Rating vs Domain Authority: the comparison
Use this table as a map, not as a way to rank the vendors. The important operational rule is simple: compare DR with DR and DA with DA.
| Factor | Ahrefs DR | Moz DA | Practical reading |
|---|---|---|---|
| Provider | Ahrefs | Moz | These are vendor metrics, not a shared industry standard. |
| Purpose | Shows the relative strength of a website’s backlink profile in Ahrefs’ database. | Predicts how likely a domain is to rank in Google using Moz’s machine-learning model of link metrics. | Read each definition on its provider’s terms; do not translate one score into the other. |
| Scale | 0–100, plotted on a logarithmic 100-point scale. | 1–100 proprietary score. | A similar-looking range does not create an exchange rate. |
| Underlying data | Ahrefs’ own backlink index and domain-level link graph, including referring-domain strength and outbound-link distribution. | Moz’s own link data and a model trained to estimate ranking potential from link metrics. | Different crawls, discoveries, models, and timing produce different inputs. |
| Relative nature | Relative to other websites in the Ahrefs database. | A predictive score whose meaning is comparative within Moz’s system. | Use the same provider and scope when comparing sites. |
| Update behavior | Changes as Ahrefs discovers links, recalculates the link graph, and other sites move around the scale. | Changes as Moz refreshes its link data or model inputs. | Do not expect both vendors to refresh a domain on the same day. |
| Appropriate uses | Consistent backlink prospect sorting, competitor comparisons, and directional tracking inside Ahrefs-based workflows. | Consistent prospect sorting, competitor comparisons, and directional tracking inside Moz-based workflows. | Choose the metric your workflow can collect consistently, then add page-level evidence. |
| Limitations | Does not measure editorial quality, topical fit, real traffic, or Google rankings by itself. | Does not prove editorial quality, topical fit, real traffic, or Google rankings by itself. | Neither score should be a stand-alone acceptance rule. |
Why the same domain can have different DR and DA
A large gap is not automatically evidence that one tool is broken. It usually means the tools are observing and modelling different versions of the link graph.
01The crawlers found different links
Ahrefs and Moz maintain separate link indexes. One may have discovered a referring domain that the other has not, or one may have classified a link differently.
02The models answer different questions
DR summarizes backlink-profile strength in Ahrefs’ system. DA is designed by Moz as a prediction of a domain’s ranking potential. Similar inputs do not mean identical outputs.
03The link graph is weighted differently
Ahrefs documents that DR considers the strength of linking domains and how many other domains those sites link to. Moz’s model uses its own link metrics and training approach. The weights are not public as a shared formula.
04The snapshots are not synchronized
A score viewed today may reflect a different crawl or update window than a score viewed in the other tool. Record the provider and date before drawing a trend.
Do not create a private conversion rule such as “DA 40 equals DR 30.” Even if that relationship appears true for one sample, it will not be a stable exchange rate across niches, dates, or providers.
Which metric is useful for each SEO decision?
The useful question is not “which score wins?” It is “which measurement can I collect consistently for this decision, and what evidence is still missing?”
Evaluating competitors
Pick one provider and compare every competitor with that provider. A DR comparison can show how sites differ inside Ahrefs; a DA comparison can do the same inside Moz. A DR 42 versus DA 38 comparison mixes two measurement systems and should not be presented as a meaningful gap.
Sorting prospects
Use DR or DA as a first-pass filter only. Then check the exact page, audience, topical relevance, visible maintenance, and whether the site has a credible editorial owner. A score can help order a list; it cannot approve a placement.
Reviewing a backlink opportunity
Start with the page where the link would appear. Read the paragraph, inspect the destination, look for real referral paths, and review disclosure and link attributes. The domain score is secondary to the specific page and context.
Estimating keyword competition
A domain metric can add context when you compare the current SERP or a known competitive set in one tool. It is not a keyword-difficulty score and it cannot account for search intent, page quality, relevance, or the strength of the exact ranking URLs.
Monitoring one site over time
Choose one provider, keep the domain scope and country settings consistent where possible, and record the date. Look for direction and investigate material changes; do not treat every point movement as a business result.
Why you should not mix DR and DA in one shortlist
If half of a prospect sheet uses DR and the other half uses DA, the sorted order implies a comparison that the tools never promised. A DA 50 is not “higher” or “lower” than a DR 50 in a meaningful shared scale. They only share a familiar-looking number range.
Keep the provider in the column name, record the check date, and use one vendor for the same analysis. If a partner reports DA and your process uses DR, keep both labels instead of silently translating one into the other. The honest conclusion may simply be that the datasets are not directly comparable.
What neither score tells you
A domain-level metric is a filter, not a page review. Before you accept a backlink opportunity or spend time on a publisher relationship, check the evidence closest to the reader:
Relevance
Would the site’s audience reasonably care about the topic or destination?
Exact-page quality
Is the actual page maintained, readable, useful, indexable, and appropriate for the proposed context?
Real traffic
Is there evidence of an audience or referral path for this page, rather than only a domain-level screenshot?
Editorial ownership
Can a real publisher review, edit, qualify, move, or reject the link without a seller dictating the outcome?
Link context
Does the surrounding sentence explain why the destination helps the reader, with a natural anchor and honest relationship?
Use the backlink quality checklist when the question is whether a specific site, page, and proposed placement are worth pursuing. Use the opportunity guide when you still need to find candidate publishers.
Illustration: what Indie Chains’ DR 30 does—and does not—mean
Illustration, not a ranking prediction: imagine a founder is reviewing Indie Chains and sees a Domain Rating of 30. That is an Ahrefs DR reading about the relative strength of Indie Chains’ backlink profile in Ahrefs’ system. It is not a DA score, a Google score, or a promise that an article on Indie Chains will rank.
For a link decision, the founder would still ask whether the relevant page reaches the right audience, whether the content is maintained, whether the publisher owns the editorial decision, whether a real referral path exists, and whether the proposed context helps the reader. A higher score from an unrelated domain could be less useful for that specific audience than a relevant DR 30 site. That is an editorial-fit observation, not a claim that DR determines rankings.
The Indie Chains checker returns Ahrefs Domain Rating only. It does not calculate Moz Domain Authority, and it does not turn either score into a quality grade.
Which metric should I use?
Use this short decision tree to keep the measurement honest:
- Are you checking a domain in the Indie Chains tool? Use the returned Ahrefs DR and label it as DR.
- Does your team already report Moz metrics? Use DA consistently for that report instead of adding a second score for appearance.
- Are you comparing competitors or prospects? Choose one provider, keep the scope and date consistent, and compare within that provider.
- Are you deciding whether a backlink is worth pursuing? Treat DR or DA as a sorting signal, then evaluate the exact page with relevance, traffic, ownership, and context.
- Are two reports using different providers? Keep both labels. Do not invent an exchange rate or a universal winner.
Where Indie Chains fits
Indie Chains gives founders a reviewed discovery surface for relevant sites and voluntary editorial collaboration. Membership does not buy a link, a publication, a specific score, or a ranking outcome. Site owners keep control over what they publish and how they qualify relationships.
Use the backlink exchange platform to discover potential sites, then use the opportunity guide to research the exact page. For broader founder context, see link building for startups. The metric is one small input into that process.
Questions founders ask
Is DR the same as DA?
No. Domain Rating is Ahrefs’ metric for the relative strength of a website’s backlink profile. Domain Authority is Moz’s proprietary metric for predicting a domain’s ranking potential. They use different data and models, so their values are not interchangeable.
Which is better, DR or DA?
Neither is universally better. Use the metric that matches the tool and workflow you already use, compare like with like, and add relevance, page quality, traffic, ownership, and context before making an SEO decision.
Why are my DR and DA so different?
Ahrefs and Moz crawl different parts of the web, update on different schedules, and apply different models to the links they discover. A large gap does not automatically mean that one provider is wrong; it means the scores answer different vendor-defined questions.
Does a higher DR or DA mean a site will rank better?
No. DR and DA are third-party estimates, not Google metrics or direct Google ranking factors. They can provide comparison context, but they do not replace page relevance, content quality, search intent, technical accessibility, or the publisher’s actual audience.
What metric does the Indie Chains Domain Rating checker return?
The Indie Chains checker returns Ahrefs Domain Rating. It does not calculate or return Moz Domain Authority. Use the result as one backlink-profile signal, then evaluate the specific site and page before acting.
Sources
Ahrefs and Moz documentation are the primary sources for the metric definitions. Provider definitions and models can change, so check the linked documentation when you need the current details.
Use the metric you can compare honestly, then inspect the page behind it.
If you want a quick Ahrefs DR reading, start with the free Domain Rating checker. If you are evaluating a specific backlink, follow it with the backlink quality checklist.