Readability Score Checker

    Paste your text below to calculate its Flesch-Kincaid Reading Ease score, grade level, and a full readability breakdown.
    Characters: 0  |  Words: 0  |  Lines: 0

    0 30 45 60 75 100 Complex Moderate Ideal Simple Basic

    Index --: Flesch-Kincaid Readability

    Words 0
    Sentences 0
    Characters 0
    Grade Level 0
    Reading Time 0 min

    Personalized Writing Suggestions

    Great Work!
    Your text has good readability. The sentence length and word choice are well-balanced.

    Average Metrics

    Words per sentence 0
    Syllables per word 0
    Total syllables 0

    Character Count

    With spaces 0
    Without spaces 0
    Double spaces 0

    Want to view detailed readability insights?

    Get sentence-level analysis and actionable suggestions to improve readability.

    Test 01
    Flesch-Kincaid
    Reading Ease
    Test 02
    FORCAST
    Readability
    Test 03
    Gunning
    Fog
    Test 04
    Dale-
    Chall
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    What the scores mean

    Flesch easeReads like
    90 to 100Very easy. Short sentences, short words.
    60 to 89Plain English. Most web writing sits here.
    30 to 59Difficult. Typical of academic prose.
    Below 30Very difficult. Long sentences, dense vocabulary.

    Flesch-Kincaid Grade, Gunning Fog, and ARI all express the answer as a US school grade, so a score of 12 means a reader in their final year of school should manage it. They disagree because they measure different things, and that spread is informative in itself.

    These formulas count syllables and sentence lengths. They cannot tell whether an argument holds, whether a paragraph is in the right order, or whether the words are yours. Short sentences full of jargon still score well.



    Features of the Readability Score Checker

    Private, On-Device

    Your text is scored right in the browser. Nothing is uploaded or stored, so drafts you have not published yet stay off any server while you check them.

    Flesch-Kincaid Gauge

    A visual gauge places your score on the Complex-to-Basic scale at a glance, alongside the grade level a typical reader would need to follow it.

    Instant Analysis

    Press check and the score, grade level, and sentence and syllable breakdown appear immediately, with no waiting and nothing to configure.

    Personalized Suggestions

    Along with the score, you get a plain-language note on whether to shorten sentences or simplify vocabulary, so the reading is something you can act on.

    Your questions, answered

    What is a good readability score?

    It depends who is reading. General web writing aims for a Flesch Reading Ease of 60 to 70, roughly a US grade 8 or 9 reading level. Academic writing is routinely lower and that is appropriate, because precision sometimes costs simplicity.

    How is Flesch Reading Ease calculated?

    It uses average sentence length and average syllables per word: 206.835 minus 1.015 times words per sentence, minus 84.6 times syllables per word. Shorter sentences and shorter words raise the score.

    Why do the four scores disagree?

    Each formula weighs things differently. Gunning Fog counts words of three or more syllables, while ARI uses characters per word instead of syllables. Disagreement is normal, and the pattern across all four is more useful than any single number.

    Are these scores accurate?

    They are arithmetic on sentence and word length, so they are exact about what they measure and blind to everything else. A readable score does not mean the writing is clear, and a difficult score does not mean it is bad.

    How are syllables counted?

    By a pronunciation heuristic with a list of common exceptions, which is how every readability tool does it without a dictionary. It is right on the large majority of English words, and occasional misses barely move the average across a long text.