# Ahrefs vs Moz: Domain Rating, Domain Authority and Backlinks

Compare Ahrefs and Moz for link building. Domain Rating vs Domain Authority, backlink analysis features, pricing, and which tool is right for you.

Canonical: https://backlinkgrid.com/comparisons/ahrefs-vs-moz


**Ahrefs vs Moz** is best decided by the backlink research you need to do, not by which tool gives your domain the higher score. Ahrefs Domain Rating (DR) and Moz Domain Authority (DA) are different third-party metrics. Neither is Google's score, and neither can tell you whether a particular link will improve rankings.

This is a workflow comparison, not a claimed hands-on benchmark. We do not have a reproducible test dataset proving that one vendor is universally more accurate. To make a purchase decision, test the same domains, date range and URL scope in both products.

## Quick comparison: what each metric tells you

| Question | Ahrefs | Moz |
| --- | --- | --- |
| Domain-level metric | Domain Rating (DR), a relative measure of backlink-profile strength | Domain Authority (DA), a predictive comparative metric |
| Page-level metric | URL Rating (UR) | Page Authority (PA) |
| Link research | Site Explorer backlink and referring-domain reports | Link Explorer inbound-link and linking-domain reports |
| Best starting use case | Investigating source pages and comparing competitor link profiles | Working with DA/PA reporting and investigating link opportunities |
| Can it confirm a Google penalty? | No | No; Spam Score is not a manual-action diagnosis |
| Can it prove every backlink exists now? | No; check the source page | No; check the source page |

See our [Moz Link Explorer walkthrough](/blog/moz-link-explorer-guide) for a practical starting workflow and our [backlink audit hub](/backlink-audit) for interpreting what you find.

## Domain Rating vs Domain Authority: why scores differ

Both metrics use their own inputs and calculations. They are not interchangeable scales. A site with DR 60 and DA 35 does not have a measurable 25-point discrepancy in Google authority. You cannot average those scores into a more accurate Google metric or reliably convert one into the other.

Use the same vendor and scope when comparing a prospect with its peers. Record the date and assess the site itself: is the article relevant, can readers find it, does the publisher exercise editorial judgment, and is the referring page useful? A strong domain-level score cannot rescue an irrelevant or abandoned page.

For example, imagine a small specialist association with modest scores and a large general-purpose platform with high scores. A resource page on the association may reach exactly the audience you need. A profile buried on the larger platform may attract no readers. That is a relevance decision, not a contest between DA and DR.

Our [authority metrics guide](/backlink-quality/authority-metrics) explains how to use scores alongside direct review. [Domain Authority](/glossary/domain-authority) and [Page Authority](/glossary/page-authority) cover the terminology.

## Is Ahrefs more accurate than Moz?

There is no universal answer without defining accuracy. A tool can discover more URLs while also showing redirects, duplicates or links that no longer exist. Another can report fewer links but still include the source pages that matter to your campaign. Freshness, coverage and classification are separate questions.

Define your evaluation before opening either product:

1. Choose your own domain and two relevant competitors. Use the same root-domain or exact-URL scope in both tools.
2. Assemble a small reference set of links whose source pages you can inspect. Include recent links, older links, redirects and different link attributes.
3. Export available results on the same day. Keep source URL, target URL, first-seen information, link status and attributes.
4. Normalize duplicate URLs carefully. A link repeated across a thousand pages on one domain is different from a thousand independent referring domains.
5. Open a sample of source pages. Record whether the link is present, points to the expected destination and is classified correctly.
6. Compare which tool supports your actual decision with the least manual cleanup. Include export access and account limits in the comparison.

A hypothetical tool finding 18 of 20 reference links has 90% coverage of **that reference set**, not 90% coverage of the web. Do not generalize a small convenience sample into an industry-wide accuracy claim.

## Why are my backlink totals different?

First check the scope. Comparing an exact page in one tool with a whole domain in another can create a large apparent difference. Then compare live versus historical links, one-link-per-domain filters, subdomains, redirects and the date of collection.

Next, open a few differing results. A source page might be blocked, newly published, removed, canonicalized or simply not yet revisited by one vendor. These are investigation clues. A missing result does not prove the link was removed, and a listed result does not prove Google credits it.

Google Search Console is useful for a verified property, but its Links report is not a comprehensive list of every link. Use it as another source of evidence, not a complete ground-truth dataset for ranking vendor indexes.

## Which should a small business choose?

Start with the job you repeat. If your clients report on DA and you mainly review a shortlist of domains, Moz may fit your reporting workflow. If you spend most of your time investigating competitor source pages and need particular Ahrefs reports, evaluate that workflow in Ahrefs. Check current features and account limits directly before subscribing.

Write down three tasks you must complete in a normal month. For example: review new referring domains, research ten competitor opportunities and export a client report. Count how often a plan limit stops those tasks. Subscription value is the cost of completing those jobs, including your time, rather than the number of features in a comparison table.

You may not need a paid subscription for occasional checks. Start with [free backlink checking options](/blog/best-free-backlink-checkers), Search Console for your own property, and a manual review sheet. If you need a starter prospect list rather than an existing-link index, the [Complete Backlink Database Bundle](/bundle) serves that different purpose. It is a CSV to shortlist and verify, not a replacement for Ahrefs or Moz.

## Avoid these comparison mistakes

- Choosing whichever score makes your site look better.
- Treating a score increase as proof of traffic or revenue growth.
- Buying a link solely because the host domain has high DA or DR.
- Disavowing links automatically because a vendor flags them.
- Repeating exact price or free-tier limits without checking the current plan.
- Mixing historical results with live links in a client report.

## What to read next

Continue with [Semrush vs Moz](/comparisons/semrush-vs-moz), [Ahrefs vs Semrush](/comparisons/ahrefs-vs-semrush-link-building), or [Moz alternatives](/comparisons/moz-alternatives). For a campaign workflow, read [backlink audit tools](/backlink-audit/audit-tools) and [backlink quality](/backlink-quality).

## Sources and verification

- [Ahrefs: Domain Rating definition](https://ahrefs.com/seo/glossary/domain-rating)
- [Ahrefs: search engines and third-party authority metrics](https://help.ahrefs.com/en/articles/907673-do-search-engines-use-domain-authority-domain-rating-as-a-ranking-factor)
- [Moz: Domain Authority methodology](https://moz-static.s3.amazonaws.com/products/landing-pages/announcements/Guide_to_Domain_Authority_2.0.pdf)
- [Google: Links report and limitations](https://support.google.com/webmasters/answer/9049606)

Product access and plan limits can change. This page deliberately avoids unsupported index-size, current-price and universal accuracy claims.