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Readability Checker

Check how easy your writing is to read. Get a readability score, an estimated grade level, and the exact sentences slowing readers down.

Quick answer: A readability checker scores your text out of 100 based on sentence length, word length, and sentence complexity, estimates the grade level needed to understand it, and flags specific sentences that are harder to read.
Works best with at least 3-4 sentences.
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    What Is a Readability Checker?

    A readability checker scores how easy a piece of writing is to follow, based on measurable factors like sentence length and word complexity rather than a subjective read-through. It also points out exactly which sentences are dragging the score down, so you know what to rewrite instead of guessing.

    How the Score Is Calculated

    Each check looks at four weighted factors:

    FactorWhat it checks
    Sentence lengthShorter sentences (roughly 12-20 words) are generally easier to follow than long, multi-clause ones.
    Word lengthText built from shorter, common words reads faster than text full of long or technical terms.
    Sentence complexitySentences with several clauses joined by "and," "which," or "because" take more effort to parse.
    Reading easeA Flesch-style reading ease estimate combining sentence and word length into a single 0-100 score.

    What the Grade Level Means

    The estimated grade level reflects the years of education generally needed to follow the text on a first read, not a judgment of the writing itself β€” technical or academic material naturally scores at a higher grade level than a casual blog post. For more background on how these scores are used, see the Wikipedia entry on readability.

    For real before-and-after examples of tightening up copy for readability, check out Website Copy Examples: Real Before-and-After Samples That Convert on the blog.

    Related Tools

    See the full list on the Free AI Writing Tools page.

    FAQ

    Common Questions About Readability

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