Readability Checker
Flesch, Flesch–Kincaid and fog scores for your writing.
About Readability Checker
Readability Checker scores your writing with Flesch Reading Ease, Flesch–Kincaid Grade Level and the Gunning fog index, plus word, sentence and reading-time counts. The scores measure sentence and word length, which correlates with difficulty but is not the same as clarity — a short sentence of jargon still scores well.
How to use it
- Paste at least ten words of text.
- Read the three scores and what grade level they imply.
- Long average sentence length is usually the thing to fix first.
Questions
What score should I aim for?
A Flesch Reading Ease of 60–70 is plain English, suitable for a general audience. Most journalism sits around there. Academic writing is typically 30–50.
Why do the three scores disagree?
They weight syllables, sentence length and complex-word count differently. Treat them as a range rather than a single verdict.
Do these work on Arabic?
No. All three were built for English prose and depend on English syllable patterns. The word and sentence counts are still valid.
Readability Checker is free and runs entirely in your browser. No account, no upload, no watermark, no limit on use.