Readability Score Checker

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Paste English text to estimate reading difficulty with English-language formulas. Get Flesch Reading Ease, Flesch-Kincaid grade, Gunning Fog, SMOG, Coleman-Liau, and ARI scores, plus word, sentence, and syllable statistics to tighten your writing.

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Awaiting textFlesch Reading Ease
Flesch-Kincaid Grade0
Gunning Fog0
SMOG Index0
Coleman-Liau0
ARI0
Avg grade level0
Words0
Sentences0
Syllables0
Complex words0
Avg words/sentence0
Avg syllables/word0

Runs in your browser. Your text is never uploaded.

How the Readability Checker Works

  1. Paste text, drop in an article, landing page, or email copy.
  2. It counts the units, sentences, words, syllables, characters, and complex words.
  3. It applies the formulas, six standard readability scores are calculated at once.
  4. You revise, review long sentences and unfamiliar words for your intended audience; preserve necessary meaning and terminology.

Why Readability Matters

  • Higher engagement, clear writing keeps readers on the page longer.
  • Wider reach, plain English serves more visitors, including non-native speakers.
  • Better conversions, easy-to-scan copy makes offers and CTAs land.
  • Machine-readable clarity, self-contained, clearly written answers are easier for parsers to interpret, although readability alone cannot earn a citation.

Combine readability with the on-page SEO checklist for content that ranks and converts.

Flesch Reading Ease Score Bands

A detailed breakdown of every Flesch Reading Ease band, the reading ease it describes, and the matching school grade level or audience. These English-language bands are rough estimates. Choose language for the intended audience and task, not a universal minimum score.

Score Reading ease Grade level / audience
90 to 100Very easy5th grade. Easily understood by an average 11-year-old.
80 to 89Easy6th grade. Conversational English for consumers.
70 to 79Fairly easy7th grade. Comfortable reading for most adults.
60 to 69Standard (plain English)8th to 9th grade. A common plain-English band, not a universal target.
50 to 59Fairly difficult10th to 12th grade. High school level.
30 to 49DifficultCollege level. Dense or technical writing.
0 to 29Very difficultCollege graduate. Academic, legal, or professional text.

Next steps

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Readability Score Checker: FAQ

What does the Flesch Reading Ease score mean here?
The tool applies the English Flesch formula and clamps the displayed result to 0 through 100. Higher values reflect shorter sentences and fewer estimated syllables per word; the labels range from Very easy to Very difficult.
How is the average grade calculated?
It averages five non-negative grade estimates: Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, and Automated Readability Index. Flesch Reading Ease is displayed separately and is not part of that average.
Why do the grade formulas disagree?
They weight sentence length, estimated syllables, complex words, and letter counts differently. Names, abbreviations, numbers, code, lists, and specialist vocabulary can move one formula more than another, so inspect the underlying counts.
How are words, sentences, and syllables counted?
Words are whitespace-separated tokens containing an ASCII letter or digit. Sentences are punctuation groups followed by whitespace or the end of text, with a minimum of one. Syllables use an English vowel-group heuristic after stripping non-letters.
What counts as a complex word?
A token is complex when the heuristic estimates at least three syllables, except when its first character is uppercase. That proper-name shortcut can exclude sentence-initial common words and include or exclude terms imperfectly.
How much text should I analyze?
Use a representative passage with several complete paragraphs. Very short samples make sentence averages and especially SMOG unstable, while navigation, tables, citations, or code can distort a whole-page sample.
How should I improve a difficult result?
Edit for the real audience: shorten overloaded sentences, define necessary terms, use concrete wording, and structure related ideas clearly. Do not replace precise terminology or chase a grade level that makes expert content less accurate.
Is the text I paste uploaded?
No. Counting, formula calculations, verdicts, and updates run in your browser. The pasted content and readability results are not sent to a Web Aloha endpoint.

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