Free Readability Checker — Flesch Reading Ease Score
If visitors have to work to read your page, they leave — and search engines notice. Paste any article, landing page, or email draft and get its Flesch Reading Ease score, US grade level, average sentence length, count of over-long sentences, and reading time, all updating as you type. Aim for an ease score of 70+ and a grade level of 6–9 for general web audiences.
Readability Checker
Know before you publish: Flesch Reading Ease, US grade level, sentence stats, and reading time for any text.
1 Paste your text
2 Readability scores
📊 Scores
How it works
The checker counts sentences, words, and syllables (using the standard vowel-group heuristic), then applies the published Flesch formulas: Reading Ease = 206.835 − 1.015 × (words/sentences) − 84.6 × (syllables/words), and Flesch–Kincaid Grade = 0.39 × (words/sentences) + 11.8 × (syllables/words) − 15.59. Everything is computed in your browser; your text is never sent anywhere.
Everyday uses
- Bloggers — tune posts to grade 6–9 so ideas land fast and readers stay.
- Marketers — simplify landing pages and ads that underperform.
- Students — check essays hit the reading level your teacher expects.
- Writers — spot the 40-word sentences that are quietly killing your flow.
Frequently asked questions
What is a good Flesch score for a blog?
70–90 (easy to very easy) is the sweet spot for general audiences. News sites sit around 60–70; legal and academic text often falls below 40.
Does readability affect SEO?
Not as a direct ranking formula, but readable pages earn more time-on-page, shares, and links — the signals that do move rankings.
Why is my grade level different from other tools?
Syllable counting is a heuristic, so tools vary slightly on unusual words. Use the score as a guide, not gospel.