Free Readability Score Checker

Analyze your content's readability with Flesch-Kincaid, Gunning Fog, and more. Make your content accessible to your target audience.

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Analyze Readability

What is Readability?

Readability measures how easy it is for readers to understand your written content. It considers factors like sentence length, word complexity, and overall text structure. Higher readability means more people can quickly understand your message.

Why Readability Matters for SEO

• User Engagement: Content that's easy to read keeps visitors on your page longer, reducing bounce rates.
• Wider Audience: Lower reading levels make your content accessible to more people, including non-native speakers.
• Featured Snippets: Google often selects clear, concise content for featured snippets and voice search answers.
• Mobile Experience: Shorter sentences and simpler words work better on small screens.
• Conversion Rates: When people understand your message quickly, they're more likely to take action.

Understanding Readability Scores

Flesch Reading Ease

A score from 0-100 where higher is easier to read:

90-100: Very Easy (5th grade)

80-89: Easy (6th grade)

70-79: Fairly Easy (7th grade)

60-69: Standard (8-9th grade)

50-59: Fairly Difficult (10-12th)

30-49: Difficult (College)

0-29: Very Difficult (Graduate)

Flesch-Kincaid Grade Level

This score indicates the U.S. school grade level needed to understand the text. A score of 8.0 means an 8th grader could understand it. For most web content, aim for grades 7-9.

Gunning Fog Index

Similar to Flesch-Kincaid, but places more emphasis on "complex words" (those with 3+ syllables). A score of 12 means roughly 12 years of formal education are needed. For broad audiences, aim for 8-12.

Tips for Better Readability

Sentence Structure

• Keep sentences under 20 words on average
• Vary sentence length for rhythm
• Start with the main point
• Use one idea per sentence
• Break up long sentences with periods, not commas

Word Choice

• Use common, everyday words
• Avoid jargon unless necessary
• Replace multi-syllable words when possible
• Use active voice over passive
• Cut unnecessary adverbs and adjectives

Recommended Readability by Content Type

• Blog posts & articles: Grade 7-9 (Flesch 60-70)
• Landing pages: Grade 6-8 (Flesch 65-75)
• Technical documentation: Grade 10-12 (Flesch 40-60)
• Legal/medical content: Grade 12+ (Flesch 30-50)
• Social media: Grade 5-7 (Flesch 70-80)

Readability is Just the Beginning

Great content is readable AND comprehensive. Content Raptor analyzes what topics your competitors cover, so you can create content that's both easy to read and ranks well.

Remember: readability scores are guidelines, not rules. Some topics require technical language. The goal is to be as clear as possible while still being accurate and helpful. Combine readability with our content score checker for a full on-page SEO audit, and check content length with our word count checker.