Free readability checker
Readability Checker
Paste a draft to estimate reading level, sentence length, syllables, Flesch Reading Ease, Flesch-Kincaid Grade, and Gunning Fog. Use it to find text that is hard to scan before publishing.
How to use the readability result
Start with the reading level and average sentence length. If the score looks difficult, scan for long sentences, stacked clauses, and repeated abstract words. Then shorten the hardest sentences before changing the entire draft.
Flesch Reading Ease is useful for quick scanning. Higher is easier. Flesch-Kincaid Grade estimates the grade level needed to read the text. Gunning Fog highlights sentence length and complex words, so it is useful for business, technical, and SEO content.
Related tools and guides
Word Counter, Reading Time Calculator, Keyword Density Checker, and Readability Score Guide.
FAQ
What readability score should I target?
There is no universal target. Product pages, support docs, and landing pages usually benefit from shorter sentences and clearer wording. Technical docs may need precise terms, but sentence structure should still be easy to follow.
Why do non-English texts show a limited result?
Flesch-style formulas rely on English syllable estimation. For non-Latin text, the tool still counts words and sentences, but it avoids pretending the English readability score is precise.
Does readability affect SEO?
Readable text can improve user experience, scanning, and engagement. It is not a guaranteed ranking factor, but it helps content serve readers better.