Readability checker
Measure how readable an English or French text is: Flesch reading ease, Flesch-Kincaid grade level and Gunning Fog index.
- Free
- No sign-up
- No file uploaded
- Windows, Mac, Android, iPhone
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About this tool
Clear writing is read faster and persuades better. Paste an article, a manual or an email: the tool computes the standard readability scores from sentence and word length, in English and French.
How to use
- Choose the text's language.
- Paste at least a few sentences.
- Shorten long sentences and words to improve the score.
Common problems and fixes
My score is very low
Split sentences over 20 words and replace long words with everyday ones.
The score changes with the language
The formulas differ: choose the text's real language.
A very short text gets an odd score
The formulas are reliable from around a hundred words.
Frequently asked questions
What score should I aim for?
At least 60 for a general audience; 70+ for text meant for everyone.
What is the Flesch-Kincaid grade?
The US school grade needed to understand the text: 8 means an average 13–14 year old.
How are syllables counted?
By an estimate based on vowel groups, accurate to about 10%.
Is my text uploaded?
No, the analysis runs in your browser.
Related searches
Still stuck?
Ask on the forum: the category, the tool, your device sheet and the test result will be filled in for you.