Free Readability Checker

Analyze your content's readability in seconds. Get Flesch-Kincaid scores, grade level analysis, and AI-powered suggestions to make your content clearer and more engaging.

Aim for 7th-9th grade reading level for web content

Readability Checker

Why Readability Matters for SEO

Content that's easy to read keeps visitors on your page longer, reduces bounce rate, and improves user engagement - all signals that affect rankings.

Research shows that most web content should be written at a 7th-9th grade reading level. Even highly educated readers prefer simpler content online. Our analyzer checks:

  • Flesch Reading Ease: Score from 0-100, higher is easier
  • Flesch-Kincaid Grade Level: US school grade equivalent
  • Sentence Length: Average words per sentence (aim for 15-20)
  • Complex Words: Percentage of words with 3+ syllables
  • Passive Voice: Percentage of passive constructions
  • Paragraph Length: Optimal paragraph length for web reading

Multiple Scores

Flesch Reading Ease, Flesch-Kincaid Grade, and more

Sentence Analysis

Identifies long, complex sentences to simplify

Word Complexity

Highlights complex words with simpler alternatives

AI Suggestions

Specific recommendations to improve clarity

How to Use the Checker

Improve your content's readability in 4 steps

1

Paste Your Content

Copy and paste the text you want to analyze. Works best with 100+ words for accurate scoring.

2

Select Your Audience

Choose your target audience for audience-appropriate readability benchmarks.

3

Review Scores

Check your Flesch scores, grade level, and specific metrics like sentence length and passive voice usage.

4

Apply Suggestions

Use the AI suggestions to simplify sentences, replace complex words, and improve overall clarity.

Checker Features

Complete readability analysis

Flesch Reading Ease

0-100 score where higher means easier to read

Grade Level

Flesch-Kincaid grade level equivalent

Reading Time

Estimated time to read your content

Word Stats

Word count, sentence count, syllable analysis

Passive Voice Detection

Identifies passive constructions to make active

Rewrite Suggestions

AI-powered simplification recommendations

Frequently Asked Questions

Common questions about readability





Ready to Make Your Content Clearer?

Check your content's readability and get actionable improvements.

Free Readability Checker - Analyze Content Readability | Kensaku AI