Flesch Reading Ease
A 0 to 100 score; higher is easier. Most business pages should sit between 60 and 70.
Free SEO tool
Score how easy a page is to read, with four standard readability tests
Enter a page address and get its Flesch Reading Ease, Flesch-Kincaid grade level, Coleman-Liau index and Automated Readability Index, plus sentence, word and syllable statistics. Pages that are easy to read keep visitors longer and are easier for AI assistants to quote.
Content Readability Checker
Run the tool above and the result appears here.
What it checks
What the Content Readability Checker looks at
Flesch-Kincaid grade
The US school grade needed to follow the text. Aim for seventh or eighth grade on a service page.
Coleman-Liau and ARI
Two more grade-level estimates based on characters and words, so one odd score does not mislead you.
Text statistics
Sentences, words, average words per sentence and syllables per word, which tell you what to change.
How to read it
How to improve a score
How to improve a score
Shorter sentences move every score. Cut sentences over 25 words in two, replace three-syllable words with plain ones where the meaning holds, and start sections with the answer. A service page written for a seventh-grade reading level is not dumbed down; it is the level most adults read at comfortably on a phone.
Why readability matters for AI search
AI Overviews and assistants prefer passages that state one idea plainly, because those are easier to extract and quote. Readable pages are also the ones that convert: a visitor who has to re-read a sentence usually leaves instead.
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Written and reviewed by
Kateryna QuinnFounder and CEO, aStash. Forbes Next 1000, NOCO Style 30 Under 30Kateryna founded aStash in Fort Collins in 2017. The free tools on this site are the checks her team runs on every client page; the content readability checker is the same check, opened up so you can run it yourself.
FAQ
Questions about this tool
Anything else? (970) 399-9004 reaches a person in Fort Collins, not a call center.
The score looks too hard but my page is simple. Why?
The tool reads everything on the page, including the menu and footer. Long navigation labels and legal text pull the score down. Judge the trend between pages rather than the absolute number.
Should every page score the same?
No. A technical article for engineers can sit at a higher grade than a plumbing service page. Match the reader, then make it as plain as the subject allows.
Which score should I trust?
Flesch-Kincaid grade level is the most widely used. When the four disagree sharply, the text usually has very long words or very long sentences; the statistics table shows which.
Do you rewrite pages for readability?
Yes. SEO copywriting and web content writing both include a readability pass, and every page we publish is checked with this tool.