Free tool · On-page & content

Readability Score Calculator

Check your content with Flesch-Kincaid, Gunning Fog and Coleman-Liau formulas. Optimise for your target audience with actionable readability insights.

FreeNo sign-upPrivateRuns in your browser
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Flesch Reading Ease Score
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Flesch-Kincaid Grade
US school grade level
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Gunning Fog Index
Years of education needed
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Coleman-Liau Index
Grade level
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Words per Sentence
Ideal: 15–20 words
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Syllables per Word
Lower is easier to read
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Text Statistics
How It Works

How to Use This Tool

1

Paste Your Content

Copy and paste your text, blog post or article into the text area. The tool works best with at least a few complete sentences.

2

Click Calculate

Hit the Calculate Readability button to instantly score your content across four industry-standard readability formulas.

3

Review & Improve

Check your Flesch Reading Ease, grade levels and averages. Simplify complex sentences and swap long words for shorter alternatives.

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