Readability Score Checker

LOCAL · Browser-Only

Analyze text readability with Flesch-Kincaid, Gunning Fog, SMOG, and more

Enter or paste text to analyze

Start typing or paste text above to see a full readability analysis with 8 different scoring algorithms, sentence-by-sentence breakdown, and improvement suggestions.

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What is Readability Checker?

Analyze the readability of any text using 8 industry-standard algorithms: Flesch-Kincaid Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau Index, SMOG Index, Automated Readability Index, Dale-Chall Readability Score, and Linsear Write Formula.

Check the reading level of an essay, article, or email, find the grade level of your writing, and see how to lower the reading level of dense paragraphs. Get detailed statistics including word count, sentence count, syllable count, reading time, and speaking time estimates. View sentence-by-sentence difficulty analysis with color coding, actionable suggestions for improvement, and target audience indicators. Compare two texts side by side. All processing runs locally in your browser.

How to Use Readability Checker

1Paste your text into the input area or upload a .txt or .md file
2View the readability scores, text statistics, and overall rating instantly
3Check the Sentences tab to see which sentences are hardest to read
4Review the Suggestions tab for actionable improvement tips

Frequently Asked Questions

What readability scores does this tool calculate?

Eight scores: Flesch-Kincaid Reading Ease (0-100), Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau Index, SMOG Index, Automated Readability Index, Dale-Chall Readability Score, and Linsear Write Formula.

What is a good Flesch-Kincaid Reading Ease score?

60-70 is considered standard and easily understood by 13-15 year olds. 70-80 is fairly easy. Above 80 is very easy. Most web content should aim for 60-70. Academic writing typically scores 30-50.

Does this tool suggest improvements?

Yes. After analysis, the tool provides actionable suggestions based on your text's characteristics - like reducing average sentence length, replacing complex words, or breaking up long paragraphs.

Can I compare two texts?

Yes. Switch to compare mode to paste two texts and see their readability scores side by side with the better score highlighted in green.

How do I lower the reading level of my text?

Shorten long sentences, swap multi-syllable words for shorter ones, and break dense paragraphs into smaller chunks. The Suggestions tab points out the specific sentences and word patterns that are pushing your grade level up so you can target the worst offenders first.

What reading level should website content target?

Most general web content reads best at a 6th to 8th grade level, roughly a Flesch Reading Ease of 60 to 70. That range stays accessible to a broad audience while still sounding natural. Technical or academic material can sit higher when the audience expects it.

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Keep reading: HTML Cheat Sheet and file permissions reference. Doing this in code instead? See the text processing endpoints.