Free Domain Authority Checker
Check any website's domain authority score, backlink count, and referring domains in seconds — for free.
- 🏅Domain Authority (DA) score
- 🔗Total backlink count
- 🌐Number of unique referring domains
- ⚡Instant results — no account needed
What Is Domain Authority?
Domain Authority (DA) is a score from 0–100 that predicts how well a website is likely to rank in search engine results. Developed by Moz, it's calculated from the number and quality of backlinks pointing at a domain. A higher DA generally means more ranking power — though Google uses its own (unpublished) PageRank algorithm, DA is a widely-used proxy metric for link authority. Checking DA alongside backlink count and referring domains gives you a complete picture of a site's link profile strength.
Why Check Domain Authority?
Assess link-building targets
Before pursuing a backlink, check the DA of the linking site. Higher DA links are more valuable for your own authority.
Benchmark against competitors
Compare your DA to competitors in your niche. A lower DA suggests you need more link-building; a similar DA means other factors determine rankings.
Evaluate guest post opportunities
When evaluating a guest post pitch, check DA to understand the authority benefit you'd receive.
Track your authority over time
Run monthly DA checks on your own domain to see whether your link-building efforts are moving the needle.
Client audits and pitches
Use DA data in SEO audits and proposals to benchmark the client's current link authority against their competitors.
Completely free
Check as many domains as you need. No sign-up. No credit card. No limits.
How It Works
Enter a domain
Type any website domain into the field above (e.g. example.com — no need for https://).
We query backlink data
RankSpark queries a comprehensive backlink index to retrieve the domain's link profile data.
DA is calculated
Domain Authority is computed from the quantity and quality of inbound links using Moz's scoring model.
Results are displayed
You see the DA score, total backlinks, and unique referring domains in a clean results card.
What the Results Show
Your domain overview includes three key metrics:
- Domain Authority score (0–100): overall link-based ranking power
- Total backlinks: the total number of inbound links pointing at the domain
- Referring domains: the number of unique domains linking to the site (more meaningful than raw backlink count)
How to Use Domain Authority Data
DA is most valuable when you use it comparatively and over time:
- 1Don't obsess over absolute DA — what matters is your DA relative to the sites you're competing with for the same keywords.
- 2Referring domains is often more useful than raw backlink count. 100 links from 100 different domains is much stronger than 100 links from 1 domain.
- 3If you're link-building, only target sites with DA 30+ — links from low-DA sites have minimal impact.
- 4Run a monthly DA check on your own domain to track whether your link-building is translating into authority growth.
- 5When auditing a prospect or client, check their DA against 3–5 top-ranking competitors. If they're significantly below, link-building should be a core part of the strategy.
OUR FAQ AREA IS THE BEST PLACE TO LOOK TO FIND ANSWERS TO YOUR QUESTIONS.
Frequently Asked Questions
What is a good Domain Authority score?
It depends on your niche. A DA of 30 is strong for a local business; a DA of 60+ is needed to compete in highly competitive national markets. What matters most is your DA relative to your direct competitors.
Does Google use Domain Authority?
No — Google uses its own PageRank algorithm, which is not published. DA is a third-party metric developed by Moz that correlates with ranking ability, but it is not a Google signal.
How do I increase my Domain Authority?
DA increases when you earn high-quality backlinks from other authoritative domains. Focus on creating link-worthy content, guest posting on relevant sites, and building digital PR.
Is this tool free?
Yes, completely free with no sign-up required.
How often is DA data updated?
Our backlink data is refreshed regularly, but DA changes slowly over time — you're seeing a recent snapshot of the domain's authority.
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