Vocabulary Size Test
Vocabulary Size Test
Mark whether you know each word and get an instant estimate of your vocabulary size.
Mark whether you know each word. We’ll estimate your vocabulary size at the end.
This is an estimate for fun, based on a short word sample — not a precise linguistic measurement. Not stored or saved.
How many words do you actually know? This quick test gives you a fun, ballpark estimate of your vocabulary size based on a short sample of words ranging from everyday to obscure.
Here’s how it works: you’ll be shown one word at a time and simply mark whether you know it or not. Mixed in are a few made-up words that don’t exist – these help keep the results honest by flagging guesswork rather than genuine recognition. At the end, you’ll get an estimated vocabulary size along with a quick sense of how that compares to a typical adult vocabulary.
Worth saying upfront: this is a lighthearted estimate based on a small sample, not a scientifically precise measurement of your vocabulary. Treat your result as a fun snapshot rather than an exact figure – and feel free to run it again to see how consistent your score is.
FAQ
How accurate is this vocabulary size test?
It’s designed to give a fun, ballpark estimate rather than a precise scientific figure. A truly accurate vocabulary measurement would require a much larger word sample and controlled testing conditions, so treat your result as a rough indicator, not an exact count.
Why are there made-up words in the test?
The made-up words act as a check against overclaiming. If someone marks a lot of words as “known” just to boost their score, they’re likely to mark some of the fake words as known too, which brings the final estimate back down to something more realistic.
What’s considered a large vocabulary?
Estimates vary, but many adult native English speakers are thought to know somewhere in the range of 20,000 to 35,000 words, with well-read individuals often sitting toward the higher end of that range.
Does a bigger vocabulary make you smarter?
Not directly. Vocabulary size is more closely linked to reading habits and exposure to language than to intelligence itself. Someone can be highly intelligent with a modest vocabulary, or have an extensive vocabulary without that reflecting overall cognitive ability.
Can I improve my vocabulary score over time?
Yes. Vocabulary tends to grow steadily through reading, especially material that includes less common words, such as novels, long-form journalism, or nonfiction outside your usual subjects. Looking up unfamiliar words when you encounter them also helps them stick.
Why might I get a different score if I take the test again?
Because the word sample is relatively small and partly randomised, your exact wording set – and therefore your result – can vary slightly between attempts. Small differences between runs are expected and don’t necessarily reflect a real change in vocabulary.