CalcChef
Search tools (e.g. 'calc', 'converter')... (Press '/' or 'Cmd+K')

Readability Scorer

Analyze text readability using Flesch-Kincaid, Gunning Fog, SMOG, and other readability formulas.

Loading Tool...

Applications

Editors, content marketers, teachers, and technical writers use readability scores to ensure content matches their target audience. Ideal for grading essays, simplifying legal text, and optimizing blog posts for SEO.

The Formulas

Computes Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, SMOG Index, Coleman-Liau Index, and Automated Readability Index (ARI). The displayed grade level averages the formula outputs for a balanced estimate.

Fun Fact: The Flesch Reading Ease formula was developed in 1948 by Rudolf Flesch and is still used by the US Navy to score the readability of their technical manuals — over 75 years later.

Related Tools

View all tools