What readability scores are calculated?

We calculate four industry-standard scores: Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, and SMOG Index. Each uses a different formula to assess text complexity.

What is a good readability score?

For general web content, aim for a Flesch Reading Ease of 60-70 (8th-9th grade level). For academic papers, 30-50 is acceptable. For children's content, aim above 80.

Is my text stored or sent anywhere?

No. All analysis is performed entirely in your browser. Your text never leaves your device.

How accurate are these scores?

Syllable counting uses a heuristic algorithm that is approximately 95% accurate for English text. The readability formulas themselves are well-established in linguistics research.

Readability Score Checker

Analyse your text with Flesch, Gunning Fog, and SMOG readability scores. Free, instant, private.

No signup. 100% private. Processed in your browser.

33.7

Flesch Ease

Difficult

11.2

Flesch-Kincaid

11-12th Grade (Difficult)

13.1

Gunning Fog

College (Professional)

11.9

SMOG Index

11-12th Grade (Difficult)

Text Statistics

Words: 63

Sentences: 6

Syllables: 121

Complex words: 14

Avg sentence length: 10.5

Avg syllables/word: 1.9

Writing Insights

Long sentences (>25 words)0 found

Long paragraphs (>150 words)0 found

Passive voice instances1 found

Adverbs2 found

significantly (1)effectively (1)

How to use this tool

1

Paste your text into the editor

2

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3

Check writing insights for improvement tips

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