Domain Authority Checker (Free Website Authority Score)
Check any website’s global popularity rank, a 0–100 authority score, 30-day trend and domain age — free, no sign-up.
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Free public data: ranks from the Tranco list and dates from RDAP registries. We do not store the domains you check.
- Instant results
- 100% free
- No sign-up
Website Authority Checker shows how established a website is. Enter up to five domains and you get each one’s global popularity rank, a simple 0–100 Popularity Score, the rank change over the last 30 days, and the domain’s age, expiry date and registrar.
Step-by-step guide: What Is Domain Authority? How to Check It for Free
More about Domain Authority Checker (Free Website Authority Score)How to use, good to know & FAQ
The rank comes from the free Tranco list, a research ranking of the top one million websites that combines several public popularity lists and averages them over 30 days. Domain dates come from public RDAP registry data. This is not Moz Domain Authority or Ahrefs Domain Rating — those are paid, private metrics — but it gives you an honest, free way to compare sites. For a full check of one site, run the Website SEO Report.
How to use Website Authority Checker
- Type or paste up to five domains, one per line (for example example.com).
- Click “Check authority”.
- Compare the scores, ranks, trends and domain ages, then download the results as CSV if you need them.
Good to know
- Popularity Score = 100 − 15 × log10(rank). Rank #1 scores 100, #100 scores 70, #10,000 scores 40 and #1,000,000 scores 10.
- Sites outside the top one million are shown as “Not in top 1M” with a score below 10 — this is normal for new and small sites.
- A “▲” trend means the site moved up the ranking over the last 30 days; “▼” means it moved down.
- Some domain endings (country codes) do not publish RDAP data, so age and expiry may show “—”.
Frequently asked questions
Is this the same as Moz DA or Ahrefs DR?
No. Moz Domain Authority and Ahrefs Domain Rating are calculated from those companies’ private link databases and are only available through their paid products. This tool uses a free, public ranking instead and shows exactly how the score is calculated.
Why does my website show “Not in top 1M”?
The Tranco list only includes the one million most popular websites. Most new or niche sites are not in it yet. Grow your traffic and links, and check again later.
How often is the data updated?
The Tranco ranking is published daily, and this tool reads the latest list each time you check. Registry dates are read live from RDAP.
Can I check competitors?
Yes. Enter your site and up to four competitors to compare them side by side.
When to use Website Authority Checker
- Comparing your website with competitors
- Checking how established a site is before buying a link or guest post
- Vetting a domain before you buy it
- Tracking whether a site is gaining or losing popularity