Readability Checker
Flesch reading ease, grade level, and writing stats for any text. Free and unlimited — everything runs in a second.
Why readability matters
Books, emails, and blogs that score well get finished; dense ones get abandoned. Amazon readers decide in seconds. If your first page scores above grade 12, you are losing readers.
How to use it
Paste up to 10,000 characters and hit Check readability. You get the Flesch reading ease score, grade level, and counts for words, sentences, and syllables.
Frequently asked questions
What is a good Flesch reading ease score?
60-70 reads comfortably for most adults. 80+ is very easy (children's books); 30 and below is dense academic writing. Aim for 50-70 for general readers.
What does grade level mean?
It estimates the US school grade needed to understand the text. A 9-10 grade level suits general audiences; 12+ is specialist.
Is this tool really unlimited?
Yes — readability scoring is pure math, so there is no limit and no account needed. It runs instantly in the browser.
Readability nailed?
Harmony Publishing packages include professional editing that tightens every page — you keep 100% of royalties.
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