Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Language
Grade Level Readability Calculator
Score the reading difficulty of any text using four professional readability formulas β Gunning Fog, Flesch-Kincaid, SMOG, and Coleman-Liau. Use it to ensure your content matches your audience's expected reading level before publishing.
Fill in the required fields to see your result.
Language
Lexical Diversity Index Calculator
Measures the richness of vocabulary in a text by calculating the Type-Token Ratio (TTR). Use it when analyzing essays, transcripts, or language samples for linguistic research or readability assessment.
Fill in the required fields to see your result.
Key differences
| Grade Level Readability Calculator | Lexical Diversity Index Calculator | |
|---|---|---|
| Category | Language | Language |
| Inputs required | 5 | 2 |
| Result | Grade Level (grade) | Lexical Diversity (%) |
| What it does | Score the reading difficulty of any text using four professional readability formulas β Gunning Fog, Flesch-Kincaid, SMOG, and Coleman-Liau. Use it to ensure your content matches your audience's expected reading level before publishing. | Measures the richness of vocabulary in a text by calculating the Type-Token Ratio (TTR). Use it when analyzing essays, transcripts, or language samples for linguistic research or readability assessment. |