Vocabulary Richness Score Calculator Online Free
Measure vocabulary diversity using Type-Token Ratio (TTR).
Note: TTR is length-dependent. Compare only texts of similar length.
What is Vocabulary Richness Score?
Calculates the Type-Token Ratio (TTR) of your text — the ratio of unique words (types) to total words (tokens). A higher TTR indicates greater vocabulary diversity. Also shows a 0–100 richness score with descriptive interpretation.
Common Use Cases
Evaluating essay quality, comparing writing samples, analysing author style, assessing language learner output, and academic linguistics research.
How It Works
TTR = unique word count ÷ total word count × 100. Higher scores indicate richer vocabulary. Note: TTR naturally decreases as text length increases, so compare texts of similar length.
Frequently Asked Questions
What is a good TTR score?
TTR is length-dependent. For short texts (100–200 words), 60–80% is typical. For long texts (1000+ words), 30–50% is normal. Compare only similarly-sized texts.
What is the difference between TTR and lexical diversity?
TTR is a simple ratio. Lexical diversity measures like MATTR correct for text length and give fairer comparisons across texts of different lengths.
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