Readability Checker | Flesch Score & Grade Level

Score any copy with Flesch reading ease and Flesch-Kincaid grade level, and find the sentence dragging it down. Runs entirely in your browser — nothing is uploaded, nothing is stored.

What the score means

Flesch reading ease runs 0–100. Above 70 is easy reading; 60–70 is plain English and the sweet spot for most commercial websites; below 50 reads like a research paper. The grade level converts the same maths into years of schooling, which is useful when a client insists their audience is “technical” — even specialists prefer plain sentences.

Why readability affects rankings indirectly

Google does not score prose quality directly, but readable pages hold attention, earn more links, get shared more, and convert better. Those behaviours feed the signals that do matter. Dense copy also blocks featured snippets, which favour short, declarative sentences.

Five edits that reliably raise the score

1. Split any sentence over 25 words at its conjunction.
2. Replace nominalisations — “implementation of” becomes “implement”.
3. Cut adverbs and hedging: very, quite, arguably, essentially.
4. Use active voice so the subject does the work.
5. Break lists out of paragraphs into real bullet lists.

Do not over-optimise for the number

Chopping every sentence to eight words produces a staccato page that reads like an instruction manual. Vary sentence length; aim for a score in the sixties with a natural rhythm. Then check length and structure with the word counter.