Readability Checker

A Flesch Reading Ease score of 60–70 is plain English that most people read comfortably. Web copy, emails and marketing usually aim for 60 or higher; technical and academic writing scores lower. Higher always means easier to read.

It uses the Flesch Reading Ease and Flesch–Kincaid grade formulas. Both are based on two things: your average sentence length (words per sentence) and the average number of syllables per word. Shorter sentences and simpler words raise the score. Syllables are estimated, so treat the number as a close guide rather than an exact linguistic count.

The grade level estimates the US school grade needed to understand your text. Grade 8 means a typical 13–14 year old could read it. For a general audience, aiming for grade 6–8 keeps your writing accessible to most readers.

Yes. The checker runs entirely in your browser using JavaScript. Nothing you paste is uploaded or stored on a server; it autosaves only in your own browser so it's there when you return.