Readability Checker
Check how easy your text is to read: Flesch Reading Ease, Flesch-Kincaid grade, Gunning Fog, SMOG and more, with long sentences and passive voice highlighted.
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About the Readability Checker
The Readability Checker scores how easy an English text is to read. Paste text to score it in your browser as you type, or enter a URL to score a page's main content. It reports the Flesch Reading Ease score with the audience it suits, five grade-level formulas (Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau and the Automated Readability Index) and their average. It also lists sentences over 25 words and sentences that may be in the passive voice, with word, sentence and reading-time counts.
Pasted text is scored in your browser and never uploaded. For a URL: our server requests the URLs you enter, like a crawler: it reads the response without running the page's scripts, and the analysis runs in your browser. The URLs and results are not stored.
How to use the Readability Checker
- Paste your text, or switch to Page URL and enter an address.
- Read the Flesch Reading Ease score: 60 or higher is plain English for most web readers.
- Split the long sentences listed and rewrite passive sentences in the active voice where it reads better.
- Check the grade levels: general web content usually aims for grade 8 or below.
Works well with the Readability Checker
- SEO Content Editor: score keyword use and structure while you write.
- Keyword Density Checker: check which words you repeat most.
- Word & Character Counter: count words, characters and reading time.
Frequently asked questions
What is a good Flesch Reading Ease score?
Scores run from 0 to 100; higher is easier. 60–70 is plain English that most adults read comfortably, and it is a sensible target for web pages, product copy and emails. Technical and academic texts often score 30–50, which is fine for their audience.
How is Flesch Reading Ease calculated?
206.835 − 1.015 × (words ÷ sentences) − 84.6 × (syllables ÷ words). Long sentences and long words lower the score. The Flesch-Kincaid grade uses the same two measures: 0.39 × words per sentence + 11.8 × syllables per word − 15.59.
Does readability affect Google rankings?
Google does not use a readability score as a ranking factor. Readable text keeps people reading, answers questions clearly and is easier for AI answers to quote, which all help indirectly.
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