Free Readability Checker

Analyze text readability with Flesch-Kincaid, Gunning Fog, SMOG and more. 100% Client-side privacy.

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Results

Readability Index	Score	Grade Level / Level
Flesch Reading Ease Measures how easy a text is to read. Higher scores = easier.	-	-
Flesch-Kincaid Grade U.S. school grade level required to understand the text.	-	-
Gunning Fog Index Estimated years of formal education needed to understand the text.	-	-
SMOG Index Estimates the years of education needed to understand a piece of writing.	-	-
Coleman-Liau Index Relies on characters instead of syllables per word.	-	-
Automated Readability Index (ARI) Approximate representation of the US grade level needed to comprehend the text.	-	-

Why Check Readability?

Readability scores help you ensure your writing is clear and understandable for your target audience. Whether you are writing for students, the general public, or academics, knowing your readability score allows you to adjust your complexity.

Supported Formulas

Flesch Reading Ease: One of the most trusted readability tests.
Flesch-Kincaid Grade Level: Used extensively in education.
Gunning Fog Index: Useful for business writing.
SMOG Index: Widely used in healthcare messages.
Coleman-Liau, ARI: Alternative metrics based on character counts.

FAQ — Free Readability Checker

Frequently Asked Questions

These are standard algorithmic estimations. While accurate for general English text, they are mathematical approximations and should be used as a guide.

No. All analysis happens in your browser. No text is ever sent to our servers.

Free Readability Checker

Results

Why Check Readability?

Supported Formulas

FAQ — Free Readability Checker

How accurate are these scores?

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