Readability Score

Calculate Flesch reading ease score.

TL;DR: Readability Score is a free, browser-based tool that lets you calculate Flesch reading ease score.

What Is the Readability Score?

Readability Checker scores text complexity across major comprehension indices (Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog, Coleman-Liau, SMOG), helping authors write clear, accessible web content.

Step-by-Step: Using This Tool

  1. Paste your article, essay, or webpage copy.
  2. Click 'Check Readability' to calculate multi-index scores.
  3. Review target grade level (e.g. Grade 7–8 for general public, Grade 12+ for academic).
  4. Follow highlighted suggestions to shorten sentences and simplify complex syllables.

Maximize Your Results

  • Flesch Reading Ease Target (60–70): Scores between 60 and 70 correspond to standard plain English easily understood by 13-to-15-year-olds.
  • Shorten Long Sentences: Sentences over 25 words increase cognitive load; split them into two punchy sentences.
  • Conversational Tone: Clear, readable content improves time-on-page and reduces bounce rate.

Related Guides & Tutorials

100% Client-Side Privacy Guarantee

All processing runs locally inside your browser using JavaScript and HTML5 APIs. Your data, files, and inputs are never uploaded to any remote server. Complete privacy by design.

Frequently Asked Questions

For general web content, aim for a Flesch score of 60–70 (roughly 8th–9th grade) — easy for most readers without feeling oversimplified.
It's based on average sentence length (words per sentence) and average word length (syllables per word) — shorter sentences and shorter words push the score higher, meaning easier to read.
It's the U.S. school grade level a reader would typically need to easily understand the text — for example, a grade level of 8 suggests the text is readable by someone with an 8th-grade education.
Long sentences and multi-syllable words both lower the Flesch score. Breaking up long sentences and swapping in simpler words are the fastest ways to raise it.
Not necessarily — readability measures how easy text is to parse, not whether it's well-argued, accurate, or engaging. It's one useful signal among many, not a complete measure of writing quality.

Cite This Tool

Referencing this tool in a paper, article, or bibliography? Copy a ready-made citation below.

NexLove.org. (2026). Readability Score [Software]. https://nexlove.org/tools/readability-checker.html
“Readability Score.” NexLove.org, 2026, nexlove.org/tools/readability-checker.html.
NexLove.org (2026) Readability Score. Available at: https://nexlove.org/tools/readability-checker.html (Accessed: 2026).
@misc{nexlove_readability_checker,
  title = {Readability Score},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/readability-checker.html}
}

Embed This Tool

Add the live Readability Score tool to your own website with this snippet — it loads the real, working tool in an iframe, not a static screenshot.

<iframe src="https://nexlove.org/embed/readability-checker.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="Readability Score — NexLove.org" loading="lazy"></iframe>

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