Site Authority Score (SAS) Checker

Most SEO tools throw multiple metrics at you - rankings, authority scores, backlink data - but leave you to figure out what actually matters.

This tool simplifies that.

The Site Authority Score (SAS) combines key authority signals into a single, easy-to-understand score from 0-100, helping you quickly assess how strong a domain really is.

What This Tool Measures

Your SAS score is calculated using a combination of:

Open PageRank (OPR) - A modern approximation of link-based authority (0-10 scale)
Global Rank - A domain's relative position across the web (lower = stronger)
Score Consistency - Balances the data to avoid misleading spikes

These signals are weighted into a single composite score, giving you a realistic snapshot of a domain's authority without needing multiple tools.

Quick Tip

Don't look at SAS in isolation. Compare multiple domains side-by-side - the real value comes from spotting the gaps between you and your competition.

Domain, Site Authority Score (SAS) is a proprietary 0-100 metric combining Open PageRank strength, global site rank, and score consistency. Not affiliated with Moz DA or Ahrefs DR. Data sourced from Common Crawl

Enter any domain above and hit Analyze.

How to Read Your Results

0-20: Very low authority - minimal visibility and backlink strength
21-40: Low authority - early growth stage, limited SEO impact
41-60: Moderate authority - gaining traction and ranking ability
61-80: Strong authority - competitive and trusted domain
81-100: High authority - dominant presence in search results

Why This Matters

Understanding authority isn't just about vanity metrics - it directly affects how easily a site can rank, how much value its backlinks carry, and how competitive it is in search.

Compare your site against competitors
Evaluate backlink opportunities
Identify weak vs strong domains instantly
Prioritize SEO efforts more effectively

What Your Site Authority Score Means

Your Site Authority Score (SAS) gives a quick snapshot of how strong a domain is in search - but the real value comes from understanding what that score actually means for your SEO.

0 - 20: Very Low Authority

This level typically indicates a new or inactive domain with little to no backlink strength. Ranking will be difficult without significant SEO work.

Focus on building foundational backlinks
Create consistent, quality content
Improve indexing and internal linking

21 - 40: Low Authority

Early growth stage. The domain has some presence but lacks enough authority to compete consistently in search results.

Target low-competition keywords
Build relevant backlinks steadily
Strengthen on-page SEO structure

41 - 60: Moderate Authority

This is where domains start gaining traction. You can rank for mid-level keywords and begin competing in your niche.

Scale content production
Target stronger backlinks
Optimize for user engagement and CTR

61 - 80: Strong Authority

A well-established domain with solid trust and backlink profile. Ranking becomes significantly easier.

Compete for high-value keywords
Leverage authority for faster indexing
Focus on topical dominance

81 - 100: High Authority

Top-tier domains with strong influence across search. These sites benefit from powerful link equity and brand trust.

Maintain authority with consistent updates
Expand into competitive markets
Leverage brand-level SEO strategies

Pro Tip: The real insight comes from comparison. Check your competitors and see where you stand - that gap is your opportunity.

How SAS Compares to Other SEO Metrics

There are several authority metrics used in SEO. Each tool measures things differently - but here's how SAS stacks up against the most common ones.

Metric	Provider	Scale	Based On	Best For
SAS	This Tool	0-100	OPR + Global Rank + Weighted scoring	Quick, practical authority checks
Domain Authority (DA)	MOZ	0-100	Link profile + proprietary model	Industry-standard comparison
Domain Rating (DR)	Ahrefs	0-100	Backlink strength	Link building analysis
Trust Flow (TF)	Majestic	0-100	Link quality/trust signals	Evaluating backlink quality

Key Difference: SAS is designed for clarity and speed - combining multiple signals into one score without overwhelming you with data.

The Professor's Free online Site Authority Score (SAS) Checker