Readability Calculator

Paste English prose to estimate readability, sentence length, and syllable density locally in the browser.

English text

—Words

—Estimated syllables

—Sentences

—Syllables / word

—English syllables are estimated heuristically, so unusual names, abbreviations, and loanwords can differ from dictionary pronunciation.

How to use this Readability Calculator

Estimate English readability using Flesch Reading Ease and Flesch-Kincaid Grade Level. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.