Domain Authority Checker
A domain authority checker is an SEO tool that estimates a website’s relative strength or ranking potential using a third-party authority score, usually based heavily on backlink data.
Key takeaways
- Domain authority is a relative metric — compare with competitors, not in isolation.
- It is not a Google ranking factor; use it as a proxy for link strength.
- Different tools use different scales and calculations — never mix scores.
- Always pair authority scores with backlink quality and organic performance data.
- Use a domain authority checker to prioritize link building and track progress over time.
SEO practitioners use authority checkers to compare sites, prioritize link prospects, and track whether a domain’s overall link profile is improving over time.
What People Use a Domain Authority Checker For
- Benchmark your site against competitors to gauge relative link strength.
- Prioritize link prospects by checking which domains have higher authority scores.
- Track link profile progress over time as you build backlinks.
- Evaluate guest post opportunities or partnership sites.
- Assess a domain before buying or for link reclamation.
- Bulk check many URLs at once for large-scale audits (e.g., Moz or Semrush).
Quick Start: How to Use a Domain Authority Checker
- Choose a tool – Moz Domain Analysis, Semrush Website Authority Checker, or Ahrefs Website Authority Checker.
- Enter your domain (e.g.,
example.com) and optionally a competitor’s domain. - Review the score – typically 0–100. Higher = stronger link profile.
- Check supporting metrics – referring domains, inbound links, spam score, Page Authority.
- Compare with competitors – the score is relative, so context matters.
- Export or bookmark results for tracking over time.
When Not to Start Here
- If you need a Google ranking factor – authority scores are not used by Google.
- If you want to compare across tools – each tool’s score is proprietary and not interchangeable.
- If you only care about organic traffic – use a [Website Traffic Checker](/seo-tools/website-traffic-checker/) instead.
- If you’re new to SEO – start with [What Is SEO](/fundamentals/what-is-seo/) to understand the basics.
Alternatives to Domain Authority Checkers
| Tool | Focus |
|---|---|
| [Backlink Checker](/link-building/backlink-checker/) | Detailed backlink analysis (anchor text, link type, follow/nofollow) |
| [Semrush](/seo-tools/semrush/) | Authority Score + keyword research + competitor analysis |
| [Ahrefs](/seo-tools/ahrefs/) | Domain Rating (DR) + backlink audit + content gap |
| [Moz](/seo-tools/moz/) | Domain Authority + Page Authority + Spam Score |
| Google Search Console | Free, first-party data on clicks, impressions, and queries |
Next step
FAQ
Is domain authority a Google ranking factor?
No. Domain authority is a third-party metric and not used by Google in its ranking algorithm.
Can I compare DA scores from different tools?
No. Each tool uses its own proprietary calculation, so scores are not interchangeable.
What is a good domain authority score?
There is no universal benchmark. Compare your score with direct competitors in your niche.
Related topics
Sources
- Moz Domain Analysis / Free Domain Authority Checker — Primary source for the best-known DA metric and checker interface.
- Google Search Central — Authoritative source for Google’s guidance that SEO metrics from third-party tools are not ranking factors.
- Semrush Website Authority Checker — Useful for explaining that authority scores are proprietary estimates based heavily on backlink signals.
- Ahrefs Website Authority Checker — Useful for showing that different providers use their own authority-style metrics.
- Moz Domain Authority Whitepaper / documentation — Best source for how DA is modeled and why it is predictive rather than a Google metric.
Reviewed by Lucía Marín, Founding editor.