5 Best Domain Authority Checkers 2026 (Free, No signup)

Domain authority is no doubt a popular SEO metric among many SEO professionals. It gives a quick estimate of a website’s comparative authority.

However, it is not an official ranking factor by Google. It is a third-party SEO metric that estimates how likely a website is to be ranked in the SERPs. It is measured on a scale ranging from 1 to 100. A higher score generally indicates greater ranking potential.

To check your website’s domain authority, you should opt for a tool that delivers accurate results. However, with so many options available online, choosing the right tool can be confusing. Bearing this in mind, we have made a list of five best free domain authority checkers that are worth trying in 2026.

5 Best Free Domain Authority Checkers

The following are the top domain authority checkers offering free access without requiring users to sign in.

DA PA Checker

DA PA checker is the free domain authority checker offers a simple yet practical interface. It provides users with a quick way to check the domain authority of any website.

Once you open the site, you’ll see the input box upfront. You can easily paste URLs into it and get results in a single report. In addition to domain authority, it provides page authority and spam score.

This tool can be very helpful when performing competitor analysis or backlink prospecting. You can also download the results as an Excel sheet.

Key Features

• Easy interface
• Offers Spam Score and Page Authority as well
• Quick access without signing in
• Provides insights about domain age
• Allows downloading results in Excel

DA-Checker

This is another free domain authority checker allowing users to evaluate the authority of a website.

This tool offers a simple way to check multiple SEO metrics that would otherwise require using several tools separately. Instead of just domain authority, it allows checking page authority, spam score, and domain age.

The interface is straightforward and doesn't demand a learning curve. Beginners can find it pretty useful to compare competitors for link building. The results are easily downloadable in an Excel spreadsheet. This makes this tool a practical choice.

Key Features

• Offers page authority score as well
• Free access without signing in
• Gives other useful metrics such as spam score and domain age
• Downloadable results

Prepostseo

Developed and marketed by Prepostseo, this Domain Authority checker offers a simple way to evaluate the domain authority of a website.

Other useful SEO metrics it provides include domain authority, page authority, spam score, and domain age, along with the index status of the entered URLs.

This is a handy tool if you want a quick overview of a domain. For instance, if you are looking for backlink opportunities and you come across a website. You can check the DA of the site and compare it with other potential sources instead of judging the site by appearance only.

If you are preparing an SEO audit report, it becomes quite easier with this tool, as it allows downloading the results in an Excel sheet.

Key Features

• Allows checking both DA and PA scores
• Free access without signing in
• Shows spam score as well
• Allows checking the index status of pages
• Download Excel report

Koala

Koala offers a free domain authority checker, providing SEO professionals with a quick way to estimate the domain authority.

Koala is a simple tool. Enter the domain you wish to analyze and execute the check. The tool is built around several common SEO use cases. These include competitor analysis, link-building research, and SEO audits.

It also provides an estimate of the spam score and links root domains. You can use these results to identify whether the domain is worth exploring further.

Key Features

• Free access
• Shows the number of linking root domains
• Allows checking spam score

SEOmator

This domain authority checker allows users to check the domain authority along with a few other SEO metrics.

Last but not least, this is another of the best free domain authority checkers we found quite useful. It also works on Moz data and shows the domain authority score along with the spam score, Moz rank, linking root domains, and total inbound links. It also displays DA history.

For example, two websites can have the same DA. But they could have very different authority histories. Studying their history may help you understand more about them.

Key Features

• Shows DA history
• Check spam score
• Shows MozRank
• Linking root domains
• Estimates inbound link count

Final Thoughts

Many SEO professionals utilize a domain authority checker to evaluate a website’s strength. They allow you to get a quick estimate and are generally good for comparative analysis.

There are a number of DA checkers available online that allow free access. We tested a few and made our list of the top 5 free domain authority checkers.

These tools allow you to check other metrics in addition to domain authority, like spam score, domain age, and a few others. If you are looking for a free domain authority checker, these tools are worth trying in 2026.