Readability Score

About Readability Score Analyzer

The Readability Score Analyzer is a free online tool that evaluates your text against six proven readability formulas, including Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau Index, SMOG Index, and the Automated Readability Index. Whether you are a content writer, student, marketer, or educator, understanding how accessible your writing is helps you connect with your intended audience more effectively.

Readability matters because readers have limited time and attention. Studies show that most adults prefer content written at an 8th-grade reading level, even if they hold advanced degrees. By running your text through our readability checker, you can quickly identify sentences that are too long, words that are too complex, and paragraphs that need simplification to maximize engagement and comprehension.

Our text readability tool works entirely in the browser with zero server uploads, ensuring your content remains private. Simply paste or type your text, click Analyze, and receive instant scores across multiple readability metrics along with detailed text statistics such as word count, sentence count, syllable count, and average words per sentence.

Key Features

• Six industry-standard readability formulas calculated simultaneously
• Flesch Reading Ease score with color-coded visual scale from 0 to 100
• Grade-level interpretation for each metric (elementary through graduate level)
• Comprehensive text statistics including word count, sentence count, paragraphs, and syllables
• Complex word detection to identify vocabulary that raises difficulty
• Average words per sentence and syllables per word analysis
• Interactive grade level scale showing where your text falls
• Instant browser-based processing with no data uploads or accounts required
• Dark mode support for comfortable analysis in any lighting condition
• Copy-friendly results for easy reporting and documentation

How to Use

1. Enter your text: Paste or type the content you want to analyze into the text input area.
2. Click Analyze Readability: Press the button to run your text through all six readability formulas simultaneously.
3. Review the Flesch score: Check the main Flesch Reading Ease score and its color-coded scale to get an overall readability snapshot.
4. Examine grade-level metrics: Look at the Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, and ARI scores for detailed grade-level estimates.
5. Check text statistics: Review word count, sentence count, syllable count, and average metrics to identify areas for improvement.
6. Refine and re-analyze: Edit your text based on the feedback and run the analysis again to track improvements.

Use Cases

• Web content writing: Ensure blog posts and website copy hit the ideal 60-70 Flesch score for general audiences.
• Marketing & advertising: Keep marketing messages accessible at a 7th-grade reading level to maximize reach and conversion.
• Academic papers: Verify that thesis writing meets the expected complexity level for scholarly publications.
• Technical documentation: Balance clarity with precision when writing user guides, APIs, and knowledge base articles.
• Healthcare communications: Ensure patient-facing materials meet the recommended 6th-grade or below reading level.
• SEO content optimization: Improve readability scores to boost user engagement metrics and search engine rankings.
• Email campaigns: Test newsletter and outreach copy to ensure subscribers can quickly digest your message.
• Educational materials: Match lesson content to the appropriate grade level for students of different ages.

Frequently Asked Questions

Tips & Best Practices

• Aim for shorter sentences: Keep your average sentence length between 15-20 words for optimal readability across most audiences.
• Choose simpler synonyms: Replace multi-syllable words with simpler alternatives when the meaning is preserved.
• Use active voice: Active voice is more direct and easier to read than passive constructions.
• Break up long paragraphs: Divide large text blocks into focused paragraphs of 3-5 sentences each.
• Test multiple drafts: Run your text through the analyzer after each revision to track improvement over time.
• Consider your audience: Technical audiences can handle higher grade levels, but always prioritize clarity over complexity.