Reading Level Score
Analyze any text against 6 readability metrics — Flesch Reading Ease + 5 grade-level formulas (Flesch-Kincaid, Gunning Fog, SMOG, ARI, Coleman-Liau). Identifies whether content matches your target audience.
What powers the Reading Level Score
Flesch Reading Ease (0-100 score)
Flesch-Kincaid Grade Level
Gunning Fog Index
SMOG Index
Automated Readability Index (ARI)
Coleman-Liau Index
Average across all formulas
Instant
Why the Reading Level Score is different
Browser-native
The Reading Level Score runs entirely in your browser. Input is processed locally — never uploaded, never logged, never cached anywhere outside your device.
No artificial limits
No daily quotas, no character ceilings, no "upgrade for more" walls. Every feature is the complete feature — the same on the first use as the thousandth.
Production-grade quality
Built to the same engineering bar as paid SaaS tools — accurate algorithms, audited logic, responsive design and accessibility-tested interactions.
Common use contexts
- Blog posts for general audiences
- Government / health content compliance
- Educational content matched to grade level
- Marketing copy review
Private and secure
Zero upload
All processing happens in your browser. Input is never transmitted, logged or cached.
Works offline
Once the page loads, the tool runs without an internet connection. No network calls happen during use.
No tracking
No accounts, no cookies for tool state. Only aggregate analytics count visits at the page level.