Check if your content is easy to read.
Paste your text and get instant Flesch-Kincaid readability scores. Know the grade level, reading ease, and complexity before you hit publish.
How to improve readability
Shorten your sentences
Break long sentences into two. Aim for 15-20 words per sentence. Your readers scan, make it easy for them.
Use simpler words
Replace multi-syllable words with shorter alternatives. "Use" beats "utilize". "Help" beats "facilitate". Clarity wins.
Write for your audience
Blog posts should target grade 6-8. Technical docs can go higher. Know your reader and match their level.
What Is a Readability Checker?
A readability checker is a tool that measures how easy a piece of text is to understand by counting words, sentences, and syllables, then applying standard readability formulas. The readability checker on this page uses the two most established formulas: Flesch Reading Ease, which scores text from 0 to 100 (higher is easier), and Flesch-Kincaid Grade Level, which maps text to a U.S. school grade. Because both formulas are published standards, the scores are comparable across any tool that implements them.
Paste your draft into the box above and click Analyze. You get your Flesch Reading Ease score, grade level, average sentence length, word and sentence counts, and average syllables per word, each with a quick verdict. Everything is computed in your browser, so nothing you paste leaves your device.
Readability is one input among several when you prepare content for publication. Check length with the word counter, test your title in the headline analyzer, and brush up on fundamentals in our search engine optimization glossary entry. Clear copy supports every one of those steps.
Why Readability Matters for AI Search
As of June 2026, a growing share of search happens inside AI assistants: ChatGPT, Perplexity, Claude, and Google's AI Overviews answer questions by quoting and citing pages. Those answers are assembled from passages an engine can quote cleanly, so short sentences and self-contained definitions travel better than dense paragraphs. Text that scores well in a readability checker tends to have exactly that shape.
The practical move is to write your key answers as quotable blocks. Open each section with a two or three sentence summary that makes sense out of context, keep the grade level near 8, and put one claim in each sentence. The score above tells you when a passage has drifted into territory only a specialist will parse.
If you want to know how your pages actually perform in search and AI answers today, our live SEO + AEO audit is a paid session where we review your site with you and show where it shows up, and where it does not. For ongoing work, the SEO & AEO service covers content, technical fixes, and answer engine visibility together.
Readability Checker Questions, Answered
What is a good Flesch Reading Ease score?
Scores run from 0 to 100, and higher means easier to read. A score of 60 to 70 is generally considered plain English, and most web content does well at 70 or above, which this checker labels Easy to Read. Anything below 30 reads like dense academic writing.
What does the Flesch-Kincaid Grade Level mean?
It estimates the U.S. school grade a reader needs to understand your text on a first pass, so a grade level of 8 means an eighth grader can follow it comfortably. The formula was developed for the U.S. Navy in 1975 and uses only sentence length and syllables per word, which means it measures structure, not meaning.
Does readability affect SEO?
Readability scores are not a documented Google ranking factor, so a higher Flesch score will not directly lift your rankings. Clear writing still matters: readers stay longer, engage more, and link more often to content they understand. Treat the score as a quality check, not a ranking lever.
How does this readability checker work?
It counts words, sentences, and syllables in your text, then applies the published Flesch Reading Ease and Flesch-Kincaid Grade Level formulas. Everything runs in your browser, so your text is never uploaded or stored. You need at least a few sentences for a stable score, since the formulas average across sentence length.
What reading level should I write for?
For general web audiences, grade 6 to 8 is the common target, and this checker flags grade levels up to 8 as good. Technical documentation and specialist content can run higher because the audience expects domain vocabulary. Match the level to your reader, not to the lowest possible score.
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