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Readability tester
 
 
This service calculates both the Flesch Reading Ease Score and the Flesch-Kincaid Grade Level.
Both standards can be used to specify the readability of your web pages.

Flesch Reading Ease Score
Flesch Reading Ease = 206.835 - (1.015 * (total words / total sentences)) - (84.6 * (total syllables / total words))

The Flesch Reading Ease scales from 0 to 100, with 30 being "difficult" and 70 being "fairly easy".
Note: Web page text should be around the 60 to 80 mark on this scale.

Flesch-Kincaid Grade Level
Flesch-Kincaid Grade Level = (.39 * (total words / total sentences)) + (11.8 * (total syllables / total words)) - 15.59

The Flesch-Kincaid Grade Level translates the 0-100 Flesch Reading Ease score to a U.S. grade level.
For example, a score of 7.2 would indicate that the text is expected to be understandable by an average student in the 7th grade.
Note: Web page text should be around the 7 to 9 mark on this scale.

Flesch Reading Ease Score Flesch-Kincaid Grade Level Typical age Style description
Elementary School *
  1 6-7  
  2 7-8  
  3 8-9  
  4 9-10  
Middle school *
90 to 100 5 10-11 very easy
80 to 90 6 11-12 easy
70 to 80 7 12-13 fairly easy
60 to 70 8 13-14 standard
High school *
60 to 70 9 14-15 standard
50 to 60 10 15-16 fairly difficult
50 to 60 11 16-17 fairly difficult
50 to 60 12 17-18 fairly difficult
Post-secondary education (College or University) *
30 to 40 13 18-19 difficult
30 to 40 14 19-20 difficult
30 to 40 15 20-21 difficult
30 to 40 16 21-22 difficult
Graduate education *
0 to 30   22+ very difficult
*) Education in the United States.

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