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The Readability Checker scores your writing with the industry-standard Flesch Reading Ease and Flesch-Kincaid Grade Level formulas, plus full word, sentence and syllable counts. Paste any text and know in seconds whether your content matches your audience's reading level.
How to use: 1) Paste your article, essay, blog post or product description into the box. 2) Click Check Readability. 3) Read your Flesch Reading Ease score (0-100), your Flesch-Kincaid Grade Level, and the plain-English verdict. 4) Simplify long sentences and heavy vocabulary where the score suggests it, then re-check.
Why check readability? Content that is too complex loses readers fast. Most web audiences read comfortably at a 7th to 9th grade level, and search engines increasingly reward clear, accessible writing - Google's helpful-content systems favor pages real people can easily understand. A low Reading Ease score flags long sentences and heavy vocabulary before you publish, not after your bounce rate tells you. Writers, students, marketers and site owners all benefit from an objective measure instead of gut feeling.
Key benefits: Two trusted metrics in one click - Flesch Reading Ease (0 to 100, where higher means easier) and Flesch-Kincaid Grade (the US school grade level needed to understand the text). The verdict translates raw numbers into actionable plain-English advice, and the visual ease bar makes the score intuitive at a glance. Syllable counting uses a proven vowel-group heuristic, and everything runs entirely in your browser - your draft is never uploaded anywhere.
Pro tips: Check readability per section, not just for the whole document - introductions often score worse than the body. If your score is low, shorten sentences first; splitting one 30-word sentence into two almost always helps more than swapping vocabulary. Aim for an average sentence length under 20 words for web content. Re-run the check after each editing pass to see the score move - watching the number climb makes editing feel like a game.
FAQs: What is a good Reading Ease score? 60-70 is plain English, ideal for most web content; 80+ is easy reading for a broad audience; below 30 is academic-level difficulty. What is the Flesch-Kincaid Grade? The US school grade required to understand the text - aim for grade 7-9 for general audiences. Does it work for languages other than English? The formulas were designed and validated for English text. How accurate is the syllable counting? The vowel-group heuristic is roughly 95% accurate on common words, which is plenty for a readability estimate.
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