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  • File (Word Docs, PDFs, etc) Scoring
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  • Readability API

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Order Time Grade Level Diff

What is a Readability Score?

Readability Scoring is the measurement of text to find out how easy it is to read. It looks at metrics like syllable count, sentence length and word difficulty to estimate the complexity of text. It then returns that in the form of a score.

What Do The Scores Mean?

Each measure is different, but the most commonly used are the Grade Levels. These represent the number of years of education someone will likely need to be able to read the text.

What Score Should I Aim For?

It depends on your audience, but if you are writing for the general public you should aim for a grade level of 6-8 (or below).

Which Algorithm Should I Use?

Each algorithm works well with different text or age groups, but if you do not already have one in mind we suggest you use the Flesch-Kincaid Grade Level. It is the most widely used, and reasonably accurate across a wide range of use cases.

Why Do My Documents Show Up As Grade 3? I Write Really Well!

A common misconception about readability scoring is that a higher score means "better" writing, but the reverse is actually true. Lower scores mean you are writing well, and there is a better chance your audience will understand your work.

I Have More Questions!

Great, drop us an email at and we'll be happy to answer them.

Time To Score

It looks like you've typed about x words, which will take around x seconds to score and highlight.

For large pieces of text (more than 100,000 words), we recommend using our File tools to ensure scoring is completed.


Measuring Readability Scores ...


    Getting Started!

    You can use the text scoring tool to tell you how easy a piece of text is to read.

    Paste some text into the box on the left, click "Measure Readability", and on the right you will see a collection of statistics and scores, including:

    Need to Process Lots Of Text?

    You can upload a CSV to to have lots of text measured in bulk, using our File Processing Tools.

    Readability Rating

    Ratings are from A to E, where A-rated text is very easy to read for the general public, and E-rated text is very hard to read.

    RATING: -

    Your average sentence length is too high. Try to shorten or split up some of your long sentences.
    You are using too many long words. Try replacing some of them with shorter alternatives.
    You may have too many clichés in your text.
    You may have too many instances of passive voice in your text.
    To improve your readability, try using shorter sentences and simpler words where possible.

    Readability Grade Levels

    A grade level (based on the USA education system) is equivalent to the number of years of education a person has had. A score of around 10-12 is roughly the reading level on completion of high school. Text to be read by the general public should aim for a grade level of around 8.

    Readability Formula Grade
    Flesch-Kincaid Grade Level -
    Gunning Fog Index -
    Coleman-Liau Index -
    SMOG Index -
    Automated Readability Index -
    Average Grade Level -

    Readability Scores

    These readability scoring algorithms do not provide grade levels. Please click on each score to find our more about what it represents and the ages it is appropriate for.

    Readability Formula Score
    Flesch Reading Ease -
    CEFR Level -
    IELTS Level -
    Spache Score -
    New Dale-Chall Score -
    Ogden Basic English n/a

    Text Quality

    Sentences > 30 Syllables - -
    Sentences > 20 Syllables - -
    Words > 4 Syllables - -
    Words > 12 Letters - -
    Passive Voice Count - -
    Adverb Count - -
    Cliché Count - -