Text Tools / Readability Score Checker
Readability Score Checker
Check your text's Flesch Reading Ease and Flesch-Kincaid Grade Level — instantly in your browser.
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Flesch Reading Ease — —
Flesch-Kincaid Grade Level: 0
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Sentences
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Text Tools / Readability Score Checker
Check your text's Flesch Reading Ease and Flesch-Kincaid Grade Level — instantly in your browser.
0
Flesch Reading Ease — —
Flesch-Kincaid Grade Level: 0
Words
0
Sentences
0
Readability Score Checker runs your text through two of the most widely used readability formulas — the Flesch Reading Ease score and the Flesch-Kincaid Grade Level — so you can see how easy your writing is to follow at a glance. Both formulas work from the same three inputs: word count, sentence count, and syllable count, which the tool calculates locally as you type. It's useful for writers, editors, and anyone checking that a document matches its intended audience, whether that's a technical manual or a general-audience blog post. Nothing you type ever leaves your browser.
Paste or type your text
Drop your text into the workspace above. The score recalculates instantly as you type or paste — there's no button to press.
Read the Flesch Reading Ease score
The big number is the Flesch Reading Ease score, on a 0–100 scale — higher means easier to read. The label underneath ("Standard", "Difficult", etc.) translates the number into plain language.
Check the grade level
The Flesch-Kincaid Grade Level estimates the U.S. school grade a reader would need to easily understand the text — useful for matching writing to a target audience.
Review the underlying stats
Word and sentence counts, plus average words per sentence and average syllables per word, are shown below the score — these are the raw numbers the formulas are built from.
It depends on your audience, but as a rough guide: 60–70 reads as "Standard" and is comfortable for most general audiences, 80+ is easy enough for a wide readership, and scores below 30 are considered difficult, dense text more typical of academic or legal writing.
They're calculated from the same inputs (words, sentences, syllables) but with different weightings, and they report on different scales. Reading Ease gives a 0–100 score where higher is easier; Grade Level reports an estimated U.S. school grade, where lower is easier.
It uses a vowel-group counting heuristic, the same approach the original Flesch formulas assume, which is accurate for the vast majority of English words but can miscount some irregular words. This makes the score a strong estimate, not a certified exact figure.
The Flesch formulas and this tool's syllable heuristic were designed for English text. Running non-English text through them will produce a number, but it won't be a meaningful readability measure.
No. All calculations happen locally in your browser as you type. Your text is never uploaded, logged, or stored.