Minimum 10 words required for analysis. 100+ words recommended for accuracy.
How to Check Your Text's Readability
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Paste or Type Your Text
Copy your content into the text area above. For the most accurate readability analysis, use at least 100 words of continuous prose. The tool accepts blog posts, essays, emails, marketing copy, and any written content. - 2
Review Readability Scores
The calculator instantly analyzes your text using six proven formulas: Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, SMOG Index, Coleman-Liau Index, and Automated Readability Index. Each score appears in real time as you type. - 3
Check Grade Level and Audience
Look at the average grade level to understand who can comfortably read your text. The target audience indicator shows whether your writing suits elementary students, middle schoolers, high schoolers, college students, or graduate-level readers. - 4
Refine Your Writing
Use the scores to guide edits. Shorten long sentences, replace complex words with simpler alternatives, and break up dense paragraphs. Re-check your scores after each round of edits until you reach your target readability level.
Who Uses Readability Analysis?
Content Marketers and Bloggers
Educators and Academic Writers
UX Writers and Technical Authors
Healthcare and Legal Professionals
Why Check Readability?
The Readability Calculator analyzes your writing using six industry-standard formulas to determine how easy your text is to read. It calculates Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, SMOG Index, Coleman-Liau Index, and Automated Readability Index all at once. Each formula measures different aspects of text complexity, including sentence length, syllable count, and word difficulty. Use it alongside the Word Counter and Reading Time Estimator for a complete picture of your content's structure and accessibility.
Readability matters for every type of writing. Web content that scores between 60 and 70 on the Flesch scale reaches the broadest audience and tends to rank better in search results. Healthcare documents, government communications, and legal disclosures often must meet strict readability standards, typically around a 6th-grade level. Academic writers use grade-level metrics to match course materials to their students. The Text Summarizer can help condense complex passages, while the Tone Analyzer reveals whether your writing sounds formal, casual, or technical.
All processing happens entirely in your browser. Your text is never uploaded to any server, making this tool safe for confidential drafts, proprietary content, and sensitive documents. There is no signup, no word limit, and no cost. Paste your text, review the scores, edit for clarity, and check again until you hit your target. Pair it with the Case Converter for quick formatting adjustments or the Character Counter when you need to meet strict length requirements.
How It Compares
Most readability checkers online require account creation, limit the number of checks per day, or process your text on remote servers. The FindUtils Readability Calculator runs entirely in your browser with no signup, no usage caps, and no data leaving your device. It evaluates six formulas simultaneously, whereas many competitors show only one or two scores unless you upgrade to a paid plan.
Compared to desktop tools like Microsoft Word's built-in readability statistics (which only show Flesch Reading Ease and Flesch-Kincaid Grade), this calculator provides four additional formulas plus an average grade level and target audience recommendation. Unlike Hemingway Editor, which focuses on sentence-level highlighting, this tool gives you quantitative scores you can track over time as you refine your writing.