Flesch-Kincaid Index Definition

This is a readability test designed to show how easy or difficult a text is to read. The Flesch-Kincaid Formula results in a score between one and one hundred which relates to a U.S. grade level, or the number of years of education required for understanding the text.

Flesch-Kincaid Grade Level = (0.39 x ASL) + (11.8 x ASW) – 15.59

Where:

ASL = Average sentence length (the number of words divided by the number of sentences)

ASW = Average number of syllables per word (the number of syllables divided by the number of words)

The result is a number that corresponds to a numerical U.S. reading grade level.