Readability Score Analyzer
Find out how easy your text is to read based on the Flesch Reading Ease formula.
Understanding Readability Scores
Readability scores estimate how easy a piece of text is to understand. They're calculated using factors like sentence length, syllable count, and word complexity. Content aimed at the general public should target a 6th–8th grade reading level (Flesch-Kincaid Grade Level 6–8).
Key Readability Formulas
- Flesch Reading Ease: 0–100 scale; higher = easier. 60–70 is "standard" (7th–8th grade). Most web content targets 60–70
- Flesch-Kincaid Grade Level: corresponds to U.S. school grades. Grade 8 = readable by 8th graders
- Gunning Fog Index: estimates years of education needed. Below 12 = accessible to most adults
- SMOG (Simple Measure of Gobbledygook): focuses on polysyllabic words; tends to give higher scores than other formulas
Target Readability by Content Type
- Blog posts / web content: Grade 6–8 (Flesch 60–70)
- News articles: Grade 8–10
- Academic papers: Grade 12+ (expected dense content)
- Medical / legal documents: Grade 12–16 (though plain language initiatives aim lower)
How do I improve my readability score?
The most effective changes: (1) Break long sentences into shorter ones — aim for 15–20 words average. (2) Replace polysyllabic words with simpler alternatives (utilization → use, facilitate → help). (3) Use active voice instead of passive. (4) Break long paragraphs — 3–4 sentences max for web content. (5) Use subheadings every 200–300 words to create natural breaks.
Does readability affect SEO?
Indirectly, yes. Google doesn't measure readability scores directly, but readable content has lower bounce rates, higher time-on-page, and more shares — all signals that correlate with good rankings. Google's Helpful Content guidelines explicitly emphasize writing for people, not search engines. Content that's hard to read scores poorly on user satisfaction metrics.