Readability Checker

Calculate Flesch Reading Ease score, grade level, and sentence complexity metrics for web copy.

Flesch Reading Ease Score

Computes a standard 0-100 score indicating content accessibility.

Grade Level Assessment

Translates reading difficulty into standard US education grade levels.

Sentence Length Ratio

Evaluates words-per-sentence ratios to improve reader engagement.

Calculating Readability Formulas & Sentence Complexity…

Evaluating Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog, and complex word metrics.

Flesch Reading Ease

0 / 100

-
Flesch-Kincaid Grade

Grade 0

Educational Level
Words / Sentence

0 Words

Average Sentence Length
Readability Score

100 / 100

Clarity Index
Readability FormulaScore ResultInterpretation & Educational Level
Flesch Reading Ease--
Flesch-Kincaid Grade Level-Standard US Schooling Grade Level
Gunning Fog Index-Years of Formal Education Needed
Automated Readability Index (ARI)-Character & Sentence Length Ratio Grade
Total Syllables

0

Complex Words (3+ Syllables)

0

Complex Word Ratio

0%

Sample Complex Words (3+ Syllables):

What is Content Readability in SEO?

Readability measures how easily a reader can understand a written text. The Flesch Reading Ease formula considers average sentence length and average syllables per word. Web copy that scores higher (60-70+) keeps visitors on page longer, reducing bounce rates and improving Google rankings.

How to Use Readability Checker

1 Paste Content

Paste your text article into the box.

2 Click Check Readability

Our calculator evaluates Flesch scores.

3 Simplify Sentences

Break long sentences into concise phrases.

Readability Best Practices

Recommended Practices
  • Aim for a Flesch score of 60 to 70 for general web audiences.
  • Keep average sentence lengths under 20 words.
Pitfalls to Avoid
  • Avoid dense, academic multi-clause sentences.

Frequently Asked Questions (FAQ)

Scores between 60 and 70 represent 8th-grade level reading, which is ideal for most web users.

Yes. Better readability improves dwell time and reduces bounce rates, signaling positive user UX to Google.

Use shorter words, active voice, and break up lengthy paragraphs.

Yes, even technical content benefits from clear, accessible sentence structures.

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