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Grade Level Readability Calculator

Score the reading difficulty of any text using four professional readability formulas — Gunning Fog, Flesch-Kincaid, SMOG, and Coleman-Liau. Use it to ensure your content matches your audience's expected reading level before publishing.

Number of Sentences (sentences)

Number of Words (words)

Number of Syllables (syllables)

Complex Words (3+ syllables) (words)

Readability Formula

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Language

Language Learning Time Calculator

Estimate how many weeks of language study you need to reach fluency in a target language, based on difficulty class, current level, weekly study hours, and study efficiency. Anchored on US Foreign Service Institute (FSI) hour estimates for native-English-speaker learning.

Target Language Difficulty

Current Level

Study Hours per Week (hours)

Learning Method

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Key differences

	Grade Level Readability Calculator	Language Learning Time Calculator
Category	Language	Language
Inputs required	5	4
Result	Grade Level (grade)	Estimated Time to Fluency (weeks)
What it does	Score the reading difficulty of any text using four professional readability formulas — Gunning Fog, Flesch-Kincaid, SMOG, and Coleman-Liau. Use it to ensure your content matches your audience's expected reading level before publishing.	Estimate how many weeks of language study you need to reach fluency in a target language, based on difficulty class, current level, weekly study hours, and study efficiency. Anchored on US Foreign Service Institute (FSI) hour estimates for native-English-speaker learning.