Lexical Density Calculator
Calculate the proportion of meaningful (lexical) words against grammatical (function) words in your text. A higher density indicates complex, information-rich writing, while a lower density indicates highly readable, conversational text. 100% private and runs locally.
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What is Lexical Density?
Lexical density measures the ratio of meaningful words to grammatical words in a text. Meaningful words (lexical words) include nouns, adjectives, verbs, and adverbs—these are the words that carry the actual information and imagery of your writing. Grammatical words (function words) include prepositions, pronouns, articles, and conjunctions. These words glue the sentences together but carry little independent meaning.
What is a good Lexical Density score?
A “good” score depends entirely on your medium. Spoken language and conversational blogs typically have a lexical density of 40% to 50%. Standard written text, such as news articles and professional copy, usually sits between 50% and 60%. Academic papers, scientific journals, and highly technical documentation often score between 60% and 70%. If your score is above 70%, your text is likely very dense and may be difficult for a general audience to parse quickly.
How this tool is better
Most density calculators simply give you a raw percentage. Our engine runs locally in your browser to instantly separate your vocabulary. Beyond providing your exact Lexical Density percentage, it dynamically extracts and ranks your top lexical words. This allows SEO professionals and copywriters to instantly verify if their core topical keywords are driving the density of the page, rather than filler adjectives.