Readability Checker

Readability Checker is a free browser-based tool that helps you analyze readability with flesch-kincaid score, grade level & suggestions. It is part of ToolsMonk's seo tools collection, so you can finish the job without downloading software, creating an account, or jumping between multiple websites.

This tool is especially useful for workflows such as checking that web or marketing copy is easy for your audience to read, simplifying complex writing to reach a broader readership, and meeting a target reading level for content or documentation. Because it runs directly in your browser, you can use it on desktop, tablet, or mobile while keeping the process fast and easy for one-off tasks as well as repeat work.

Readability Checker is also a strong fit for people searching for readability, flesch kincaid, and reading level, because it combines a simple interface with instant results and privacy-friendly processing.

Readability Checker scores how easy your text is to read using the Flesch Reading Ease metric and grade-level estimates, and flags the long or complex sentences dragging your clarity down.

The Flesch score runs 0–100, higher being easier, and is driven by two things: average sentence length and average syllables per word. That's empowering, because it tells you exactly what to change — shorten sentences and choose simpler words and the score rises. For general web content, aiming around an 8th–9th grade level (roughly 60+) hits the sweet spot most adults read comfortably.

Clear writing isn't dumbing down. Even expert audiences absorb plain, well-structured text faster, so improving readability lifts engagement and comprehension across the board. And while Google doesn't score readability directly, clearer content keeps readers on the page and serves snippets and voice search well — an indirect SEO benefit.

Analysis runs in your browser, so your draft stays private. Pair it with Word Counter and the SEO Content Analyzer to balance length, keyword usage, and clarity before publishing.