Free Readability Checker — Know Exactly Who Can Read Your Content

Flesch Reading Ease scores text from 0-100. Higher scores = easier to read. 90-100 (5th grade): Very easy, comic books. 60-70 (8th-9th grade): Plain English, ideal for web content. 30-50 (College): Difficult, academic writing. 0-30 (College graduate): Very difficult, professional/academic. The formula uses average sentence length and average syllables per word. Most websites should target 60-70 for maximum accessibility. News sites average 65. Time magazine averages 50-60. Aim for 60+ unless writing for academics.

Target 8th grade level (age 13-14) for general web content. This isn't "dumbing down" - it's inclusive design. 54% of US adults read below 6th grade level. Even highly educated readers prefer simple prose online because they're scanning, multitasking, or on mobile. Studies show: 8th grade content gets 38% more social shares. 9th grade content is ideal for blogs. Marketing copy should aim for 7th-8th grade. Technical documentation can go higher (10th-12th) when necessary. News outlets like USA Today target 10th grade. Legal documents often hit college+ (unfortunately).

Key tactics: 1) Shorten sentences - aim for 15-20 words average, under 30 max. 2) Use simpler words - "use" not "utilize," "help" not "facilitate. 3) Break up long paragraphs - 2-3 sentences per paragraph online. 4) Use active voice - "We recommend" not "It is recommended." 5) Add transition words - however, therefore, additionally. 6) Use bullet points and headings. 7) Remove unnecessary adverbs and qualifiers. 8) Replace jargon with plain language. Our tool highlights specific problem areas so you know exactly what to fix.

Indirectly, yes. Google doesn't directly use Flesch scores as a ranking factor, but readability impacts signals Google does measure: time on page (readable content keeps people engaged), bounce rate (confusing content drives people away), mobile-friendliness (simple language works better on small screens), and featured snippet selection (Google prefers clear, concise answers). Plus, readable content gets more social shares and backlinks. For best SEO: write for humans first, then optimize for search engines. Target Flesch score of 60-70 and 8th-9th grade level.

Different formulas for different purposes: Flesch Reading Ease (most popular, good general metric), Flesch-Kincaid Grade Level (US education levels), Gunning Fog (business writing), SMOG (healthcare/medical content), Coleman-Liau (uses characters not syllables), ARI (military standard). No single formula is "best" - each emphasizes different factors. Use multiple scores for comprehensive analysis. For web content, Flesch Reading Ease and Flesch-Kincaid Grade Level are most relevant. Focus on trends: if all formulas say "too complex," simplify!

Never! All readability analysis, score calculations, and text processing happen entirely in your browser using JavaScript. Your blog posts, articles, emails, documents, and content never leave your device or get sent to any server. This makes it completely safe for checking unpublished content, confidential business copy, client drafts before approval, or proprietary content strategies. The tool works offline once loaded. Your content remains 100% private and secure.