Readability Analyzer
Check your text's readability using the Flesch Reading Ease and Flesch-Kincaid Grade Level formulas, two widely used readability scores.
Paste some text above to see its readability scores
Recommended Settings
Pro Tips
- •Flesch Reading Ease ranges roughly from 0 (very difficult) to 100 (very easy) - higher scores mean easier reading
- •The Flesch-Kincaid Grade Level estimates the US school grade level needed to understand the text
- •Shorter sentences and simpler words (fewer syllables) both improve readability scores
- •Syllable counting uses an approximation, so scores are a close estimate rather than a perfectly precise measurement
Most Popular
Most content style guides target a Flesch Reading Ease of 60-70 (Standard) for general audiences
When to Use This Tool
Check whether your writing is accessible to a broad, general readership.
Confirm content meets a publication or style guide's readability target.
Assess whether technical writing is appropriately complex for its intended audience.
Check that important public-facing text is written in clear, accessible language.
How It Works
Count words, sentences, and syllables in your text
Apply the standard Flesch Reading Ease and Flesch-Kincaid Grade Level formulas using those counts
Display both scores along with the supporting averages used to calculate them
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Files never leave your device. All processing happens locally in your browser.
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Powered by Client-side Flesch Reading Ease and Flesch-Kincaid Grade Level formulas for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What is the Flesch Reading Ease score?
It's a widely used readability formula that scores text roughly from 0 to 100 based on sentence length and word complexity - higher scores mean the text is easier to read.
What does the Grade Level number mean?
The Flesch-Kincaid Grade Level estimates the US school grade a reader would need to have completed to easily understand the text - for example, a score of 8 suggests an 8th-grade reading level.
How accurate is the syllable counting?
It uses a common rule-based approximation rather than a full pronunciation dictionary, so it's very close but not perfectly precise for every word, especially unusual or foreign words.
Is my data sent to a server?
No. All scoring happens entirely in your browser.
What's a good readability score to aim for?
It depends on your audience - general consumer content often targets 60-70 (Standard/Fairly Easy), while academic or technical writing can reasonably score lower.