Analyze Text Readability
Paste your text. Get Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, and a reading level recommendation. Essential for writers, educators, and content creators.
📝 Why This Matters for Writing
Why It Matters
Readability affects comprehension and accessibility. Technical manuals, patient handouts, and web content benefit from matching text difficulty to audience.
How It Helps
We apply Flesch-Kincaid, Flesch Reading Ease, Gunning Fog, Coleman-Liau, and SMOG. Each uses sentence length, word complexity (syllables), and vocabulary. Combined they give a fuller picture.
Key Insights
- ●Flesch-Kincaid = US grade level
- ●SMOG for health content
- ●Shorter sentences = easier
- ●Vocabulary richness = unique/total
🎯 Quick Examples
Readability Indices Comparison
Counts Breakdown
Average Lengths
For educational and informational purposes only. Verify with a qualified professional.
📖 Literary Insights
Newspapers aim for 8th–10th grade
Legal documents often score 12+
Flesch-Kincaid Grade Level outputs US school grade (8 = 8th grade). Flesch Reading Ease 0–100: higher = easier (60–70 = standard). SMOG often used for health/medical content. Shorter sentences and simpler words = lower grade level.
Sources: Flesch-Kincaid, SMOG Index (Mc Laughlin 1969)
Key Takeaways
- • Flesch-Kincaid Grade Level = US school grade (8 = 8th grade)
- • Flesch Reading Ease 0–100: higher = easier (60–70 = standard)
- • SMOG often used for health/medical content
- • Shorter sentences and simpler words = lower grade level
Did You Know?
How Does Readability Work?
Formulas
Readability formulas predict difficulty using sentence length, word length (syllables), and vocabulary complexity. Flesch-Kincaid outputs US grade; Flesch Reading Ease is 0–100.
Inputs
Paste or type text
Outputs
Flesch-Kincaid, Flesch Ease, Gunning Fog, Coleman-Liau, SMOG, vocabulary richness
Expert Tips
Grade Level by Content
| Grade | Content | Audience |
|---|---|---|
| 4–6 | Children's books | Kids |
| 7–9 | News, web | General |
| 10–12 | HS, college | Students |
| 12+ | Legal, academic | Experts |
Frequently Asked Questions
What is a good Flesch-Kincaid score?
General public: 6–8. Academic: 10–12. Legal: 12+.
What is Flesch Reading Ease?
0–100 scale. Higher = easier. 60–70 = standard.
Why do different formulas give different results?
Each weights sentence length and word complexity differently. Use multiple for a fuller picture.
How is syllable count estimated?
Heuristic from vowel groups. Approximate but consistent.
What is vocabulary richness?
Unique words ÷ total words. Higher = more varied vocabulary.
Which formula for health/medical content?
SMOG is often recommended for patient education materials.
Key Statistics
Official Data Sources
⚠️ Disclaimer: Readability formulas are estimates. Use alongside human judgment. Not a substitute for professional editing.
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