Readability Score

The Readability Score estimates how hard a piece of text is to read by converting its language statistics into an approximate school grade level. It is a quick, objective way to check whether your writing matches its audience — a blog post aimed at high-schoolers, a help article anyone should understand, or a report readers at university level. Try it on yourself: paste an email, an article draft, a product description or a chapter of your thesis.

What it measures

• 📖 An approximate grade level (1st grade to graduate level) for your whole text
• ✍️ Sentence statistics — sentence count, average sentence length, share of long sentences
• 🔤 Word statistics for English — average word length, syllable count and the Flesch Reading Ease score
• 💡 Concrete improvement suggestions, like splitting sentences that run too long

When to use it

• Before publishing a blog post, to check the reading level matches your audience
• When localizing or simplifying documentation, to verify your rewrite got easier
• While editing academic or business writing, to catch marathon sentences

Privacy: your text never leaves the browser. All scoring runs locally on your device.