ReadabilityTool

What ReadabilityTool is

ReadabilityTool is a free web tool that analyzes text users paste and returns readability scores, text statistics, and observations about complexity. It calculates six measures: Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog, SMOG, Coleman-Liau, and Automated Readability Index. Results also report word and sentence counts, average sentence length, and estimated reading time, with feedback on sentence length and vocabulary complexity. The tool runs in a browser using JavaScript; the site says text is not sent to a server, stored, or shared with third parties. No account or software installation is required, and there is no limit on the amount of text analyzed. Its listed audiences include bloggers and content writers, students and educators, healthcare professionals, legal and business writers, SEO and marketing professionals, and technical writers. For blog posts and articles, its guidance suggests Flesch Reading Ease scores of 60–70 and grade levels of 7–9. It notes that SMOG needs at least 30 sentences for accuracy and identifies Grade 6 or below as a target for patient-facing materials.