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icurio Readability Scores

icurio measures websites for readability on a point scale of 1 to 5, where 1 corresponds to low reading difficulty and 5 corresponds to high reading difficulty. icurio then prominently displays a score for each website, and even provides quick refinement options that allow you to click to websites of your desired readability level.

Example of an icurio readability score:

icurio Readability Scores

The relationship between grade levels and the icurio readability scores is given here:

icurio Readability Score
Grade-Level Readability Equivalent
 1 - 3 
   4 - 6   
 7 - 8 
9 - 10
11 - 13
See Below*

The icurio readability score is a composite, an average of the scores generated by four long-standing readability formulas and the Lexile® Framework for Reading:

Additional readability scores generated by icurio are reported for comparison using these common devises for measuring readability:

The documentation for the style and diction program used by icurio to generate readability scores can be found at

Viewing All Readability Measures

To view all readability measures for a website, simply click on the View Content Details link. This button can be found on every web content result.

Example of using the View Content Details:


*N/A Scores

Occasionally icurio is unable to calculate a readability score for a website. Learn more here.