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Raygor Readability Graph Calculator

A visual readability estimator that uses letter counts instead of syllables. Useful when syllable counting is unreliable.

한국어에는 적합하지 않음

이 도구는 영어(와 일부 관련 언어)용으로 보정되었습니다. 한국어의 결과는 신뢰할 수 없습니다.

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The Raygor estimate (1977) is similar to Fry but counts long words (6+ letters) instead of syllables — easier to do by hand or in code.

It plots sentences-per-100-words against long-words-per-100-words to estimate a grade level.

How is Raygor different from Fry?

Raygor uses "long words" (6+ letters) instead of syllables. This eliminates the syllable-counting step but loses some accuracy.

Classic 0–100 readability score.

U.S. grade level for your text.

Penalises complex (3+ syllable) words.

Health & medical text grade level.