Paste your writing and get an instant Flesch Reading Ease score, the most widely used readability metric in publishing and education. The score runs from 0 to 100, where higher numbers mean easier reading: a score above 60 is comfortable for most adults, while anything under 30 reads like dense academic prose. This calculator uses the standard formula, 206.835 minus 1.015 times average words per sentence minus 84.6 times average syllables per word, and counts syllables with a proven English heuristic. It also reports the approximate US school grade needed to read your text comfortably. Everything is computed locally in your browser, so your draft never leaves your device. Use it to check blog posts, emails, marketing copy or reports before you publish and tighten any passage that scores too low.
It rates text on a 0 to 100 scale where higher is easier to read, with scores above 60 considered plain and accessible.
The Flesch formula uses average sentence length and average syllables per word, so shorter sentences and simpler words raise the score.
General web content often targets a score of 60 or higher, roughly an eighth grade reading level, for broad readability.
Paste your writing and get an instant Flesch Reading Ease score, the most widely used readability metric in publishing and education. The score runs from 0 to 100, where higher numbers mean easier reading: a score above 60 is comfortable for most adults, while anything under 30 reads like dense academic prose.
Yes. Readability Score Calculator is completely free, with no sign-up and no usage limits.
Yes. Readability Score Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Readability Score Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.