Readability Score Checker
Analyze the readability of your text with Flesch-Kincaid and more
CALCULATORℹ️ About this tool
Free Online Readability Score Checker & Text Analysis
Analyze your text's readability with the Readability Score Checker. This free tool instantly calculates Flesch-Kincaid Reading Ease, Grade Level, Gunning Fog Index, and Coleman-Liau Index scores. Get visual highlights of hard-to-read sentences and actionable suggestions to improve clarity, all without signup or data leaving your browser.
How to Use the Readability Score Checker
Paste or type your text into the input area. The tool instantly analyzes your content and displays multiple readability scores including Flesch-Kincaid and Gunning Fog. Switch to the Highlights tab to see hard-to-read sentences visually marked, then check the Suggestions tab for specific improvements like simpler word alternatives. Use the Copy Report button to save your analysis results.
Why Use This Readability Score Checker
This tool is completely free with no account needed. It calculates four established readability formulas simultaneously, highlights problem sentences, and offers concrete suggestions to simplify your writing. Everything runs in your browser so your text is never sent to any server, ensuring complete privacy.
Popular Use Cases
Content marketers use the Readability Score Checker to ensure blog posts and landing pages are accessible to their target audience. Students and academics check paper readability before submission. UX writers verify that interface copy is clear and concise. SEO specialists optimize content for featured snippets by targeting appropriate reading levels. Email marketers test newsletter copy to maximize engagement across diverse readers.
Frequently Asked Questions
What readability formulas does this tool use?
The tool calculates several established readability metrics including Flesch-Kincaid Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, and Coleman-Liau Index. Each formula uses a different combination of sentence length, word length, and syllable count to estimate how easy or difficult a text is to read. Together, they give you a well-rounded picture of your content's accessibility.
What is a good readability score?
For general web content, aim for a Flesch-Kincaid Reading Ease score between 60 and 70, which corresponds roughly to an eighth or ninth grade reading level. Blog posts and marketing copy typically perform best at this level. Technical documentation and academic papers naturally score lower, which is acceptable for their specialized audiences.
How can I improve my readability score?
Focus on shorter sentences, simpler words, and active voice. Break long paragraphs into smaller chunks. Replace jargon and multi-syllable words with everyday alternatives where possible. The Suggestions panel in this tool highlights specific sentences and words you can simplify for immediate improvement.
Does readability score affect SEO?
While readability is not a direct Google ranking factor, content that is easy to read tends to have lower bounce rates, longer dwell times, and higher engagement. Google also favors clear, well-structured content for featured snippets and passage ranking.
Is my text stored or shared with anyone?
No. All analysis runs entirely in your browser using client-side JavaScript. Your text is never sent to any server, never stored, and is discarded the moment you leave or refresh the page.
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