Readability Checker — Check Reading Level & Grade Level

📖 Readability Checker

How easy is your text to read? Get 10 readability scores, your grade level, and tips to make it clearer — free, in your browser; your text never leaves your device.

How to use: paste your text below, or upload a file. You will get 10 readability scores, your grade level, your hardest sentences, and simple tips to improve. Scores are most reliable with at least 100 words of text.

Your text0 / 1,000,000

Try: Easy textSchool paragraphHard academic text

Words

Characters

Sentences

Syllables

Avg. sentence (words)

Avg. syllables / word

Complex words (3+ syll.)

0 sec

Reading time

0 sec

Speaking time

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Paste some text to see your score

Flesch Reading Ease score (0–100) · higher = easier to read

Target grade

Your average grade level will appear here.

All 10 readability formulas

Flesch Reading Ease

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The classic 0–100 score. 90–100 is very easy (a 5th grader can read it); below 30 is very difficult.

Flesch-Kincaid Grade Level

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The U.S. school grade a reader needs to understand your text.

Gunning Fog Index

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Years of school needed to understand the text on a first reading.

SMOG Index

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Years of school needed to fully understand the text — often used for health information.

Coleman-Liau Index

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Grade level from letters and sentence length — no syllable counting needed.

Automated Readability Index (ARI)

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Grade level from characters and sentence length — made for technical writing.

Dale-Chall Score

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Checks your words against a list of 3,000 familiar words.

LIX

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Under 30 is very easy, over 60 is very difficult — from sentence length and long words.

Linsear Write

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Grade level from easy vs hard words in your first 100 words.

Spache Score

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Made for young readers — checks words against about 1,000 familiar words.

Flesch Reading Ease → grade level chart

Flesch score	Grade level	Reading difficulty
90–100	5th grade	Very Easy
80–89	6th grade	Easy
70–79	7th grade	Fairly Easy
60–69	8th–9th grade	Standard
50–59	10th–12th grade	Fairly Difficult
30–49	College	Difficult
0–29	College graduate	Very Difficult

Hardest sentences

Your hardest sentences will appear here.

💡 How to make it easier to read

Paste some text to get tips for making it easier to read.

Download readability report

Your text auto-saves in your browser only — it is never uploaded or sent anywhere.