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Home/Text Tools/Readability Score Checker
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Readability Score Checker

Check Flesch-Kincaid, Gunning Fog, and reading ease scores with actionable suggestions.

Paste your content above to check its readability scores.

All analysis happens in your browser. No data is sent to any server.

About Readability Score Checker

Free readability score checker that analyzes your text and calculates Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog Index in real time. See visual score gauges, average sentence and word length, syllable counts, and a target audience comparison. Get actionable suggestions to improve clarity - including flagging long sentences and complex words. Perfect for writers, content marketers, students, and anyone who wants to ensure their writing is accessible. 100% browser-based, no signup required.

Frequently Asked Questions

What is the Flesch Reading Ease score?
The Flesch Reading Ease score rates text on a scale from 0 to 100, where higher scores mean easier reading. A score of 60-70 is considered standard (readable by 8th-9th graders), 70-80 is fairly easy, and 80-90 is easy. Most web content should aim for 60-70 or higher to be accessible to a general audience.
What is the Flesch-Kincaid Grade Level?
The Flesch-Kincaid Grade Level estimates the US school grade needed to understand your text. A score of 8.0 means an 8th grader can understand it. For general web content, aim for grades 6-8. Business writing typically targets grades 8-10. Academic writing may be grade 12 or higher.
What is the Gunning Fog Index?
The Gunning Fog Index estimates the years of formal education needed to understand text on a first reading. It focuses on sentence length and the percentage of complex words (3+ syllables). A Fog score of 12 requires a high school senior reading level. Most readable writing scores between 7-12.
How is the readability score calculated?
The tool uses established formulas based on sentence length, word length, and syllable count. Flesch Reading Ease = 206.835 - 1.015ร—(words/sentences) - 84.6ร—(syllables/words). The Flesch-Kincaid and Gunning Fog formulas use similar linguistic metrics with different weightings.
How can I improve my readability score?
The most effective ways to improve readability: use shorter sentences (aim for 15-20 words average), choose simpler words with fewer syllables, use active voice instead of passive, break long paragraphs into smaller ones, and use subheadings and bullet points. The tool provides specific suggestions based on your text.
Is this readability checker free?
Yes, completely free with no signup required. All analysis happens in your browser - your text is never sent to any server. Check as many texts as you want with instant results.

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