Domain authority is a way to understand how strong or influential your website is in terms of ranking potential. It reflects the overall trust, relevance, and credibility your site has built over time, based on things like backlinks, content quality, and structure. This isn’t something Google officially uses. It’s a score created by SEO platforms like Moz (DA), Ahrefs (DR), or SEMrush (Authority Score). Each one uses its own method to calculate it, so the numbers will vary from tool to tool. Here we discuss 7 Best Domain Authority Checker Tools to Use in 2025.
Best Domain’s Authority Checker Tools (Free and Paid)
There are plenty of tools out there, but not all give accurate or detailed results. Below are 7 of the best domain authority checker tools—some are free, some are paid, and all are trusted by marketers and SEO pros.
Let’s take a look:
1. Moz Domain Authority Checker
Moz is the company that created the Domain Authority (DA) metric, so it makes sense that their tool is one of the most trusted. The Moz Domain Authority Checker lets you check your website’s DA score, the number of backlinks, and the number of linking domains—all for free. You simply enter your website URL in the Moz Link Explorer, and it gives you a clear overview of your site’s authority, spam score, and backlink profile.
Features:
- Free domain authority checker (limited daily checks)
- See DA, spam score, and inbound links
- Compare your site with competitors
- Simple and beginner-friendly interface
2. Ahrefs
Now that you are aware of Moz, another excellent tool to assess your website authority is Ahrefs. While Moz, however, deals with Domain Authority and Page Authority as two distinct measures, Ahrefs employs Domain Rating (DR) and URL Rating (UR). The nomenclature might be different, just like the names are, but the purpose is the same: both inform you of how powerful your website and some pages are. One of the most helpful features in Ahrefs is its backlink analysis. When you enter a domain, it not only shows your DR score but also gives you a full list of linking websites and backlinks.
Features:
- Domain and page-level authority tracking (DR and UR)
- In-depth backlink profile analysis
- See referring domains, anchor text, and link types
- Great for spying on competitor link-building strategies
3. SEMrush
If you prefer an SEO tool that serves as a domain authority checker too, SEMrush is another strong option. It doesn’t technically refer to a “Domain Authority,” but it does give you an “Authority Score” that does the same thing—it measures how well and well-respected a domain is based on backlinks, organic traffic, and overall, SEO wellness. Authority Score in SEMrush is built from a number of data points, so it’s a good measure of domain strength and the quality of a site in general.
Features:
- Analyze backlinks
- Check referring domains
- Monitor competitor authority
- Get insights into keyword rankings and traffic
- Custom “Authority Score” system
- Deep backlink and keyword analysis
- Track competitors’ domain performance
- Includes a free version with limited checks
4. Small SEO Tools
If you need a totally free domain authority checker, Small SEO Tools is the best option. It is a lightweight, no-signup-required tool that enables you to check the DA and PA (Page Authority) of any website within seconds. You simply put the domain into the box, click “Check Authority,” and receive instant results. It even includes a multiple-domain bulk check, which comes in handy if you’re conducting outreach, audits, or link research.
Features:
- 100% free domain authority checker
- Shows DA, PA, spam score, and IP address
- No login required
- Bulk check option available
5. Website SEO Checker
Website SEO Checker is another handy tool that offers a free domain authority checker along with other useful SEO metrics. It’s simple to use and great for anyone who wants to analyze a site’s authority without getting overwhelmed by too much data. Just enter your domain, and it instantly shows your Domain Authority, Page Authority, Moz Rank, backlinks, and even social signals—all on one clean dashboard. What makes this tool helpful is that it gives you a well-rounded SEO snapshot, so you can understand how your domain performs beyond just DA.
Features:
- Free and easy-to-use domain authority check
- Includes DA, PA, backlink count, and page speed
- Good for quick audits and competitive research
- No sign-up is required for basic use
6. SEO Review Tools
SEO Review Tools offers a wide range of free SEO utilities, and its Domain Authority Checker Tool is one of the most popular on the site. It’s powered by Moz, so the DA and PA scores you see are accurate and trusted. Unlike some basic checkers, this tool also gives you insights into link metrics, social shares, and the number of referring domains—which makes it useful for both beginners and advanced users. You can even compare multiple websites at once, making it a great option for outreach, competitive analysis, or quick audits.
Features:
- Free domain authority checker using Moz data
- Shows DA, PA, backlinks, social shares, and more
- Supports side-by-side competitor comparison
- No login required
7. Majestic
Majestic is another powerful SEO tool that takes a slightly different approach from Moz or Ahrefs. Instead of using Domain Authority, it uses two unique metrics: Trust Flow and Citation Flow to measure website strength.
- Trust Flow reflects the quality of the backlinks pointing to your site.
- Citation Flow measures the quantity or influence of those links.
Features:
- Uses Trust Flow & Citation Flow instead of traditional DA
- Shows detailed backlink data and referring domains
- Strong historical index for backlink tracking
- Free limited checker with paid plans available
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