Readability Scores (Flesch-Kincaid)
Flesch-Kincaid Grade Level and Flesch Reading Ease for any text. Word / sentence / syllable counts. Public-domain federal formula.
Formula and source
Flesch-Kincaid Grade Level: 0.39 * (words/sentences) + 11.8 * (syllables/words) - 15.59. Flesch Reading Ease: 206.835 - 1.015 * (words/sentences) - 84.6 * (syllables/words).
Kincaid, Fishburne, Rogers, and Chissom, 'Derivation of New Readability Formulas for Navy Enlisted Personnel,' Naval Technical Training Command Research Branch Report 8-75 (1975). Flesch, 'A New Readability Yardstick,' Journal of Applied Psychology 32:3 (1948).
Audience
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