LingoflyHow many words you need to know
To know 95 words out of every hundred in an ordinary conversation, you need to learn about three thousand. Only “I know 95 words out of a hundred” and “I understand the conversation” are not at all the same: every twentieth word will be unfamiliar — and easily the very word the sentence was said for. To read a book without a dictionary takes eight or nine thousand.
Why “I know almost all the words” is not yet “I understand”
The usual count: how many words out of a hundred are familiar to you. Ninety-five familiar — they say “you know 95%”. It sounds almost like “you understand 95% of the text”, and half the advertising for language apps is built on that swap.
But the difference is huge. If 95 of a hundred words are familiar, an unfamiliar one comes every twenty words — that is, in almost every sentence. If 98 of a hundred — once in fifty words, about once a paragraph. The first is reading with a stumble at every step. The second is simply reading.
The numbers
| What you want | Familiar words out of a hundred | How many to learn |
|---|---|---|
| Follow a conversation in broad strokes | 95 | about 3,000 |
| Confidently follow speech by ear | 98 | 6000–7000 |
| Read with stumbles | 95 | 3,000–4,000 |
| Read a book without a dictionary | 98 | 8,000–9,000 |
An important caveat about counting. “Read”, “reads”, “reading”, “reader” and “reread” count here as one word, not five: it is one word together with its forms and derivatives. If you counted every form separately — and the languages we teach have many forms — the number would grow several times over.
What this means in practice
The first 500 words give a disproportionate amount: frequency is spread extremely unevenly, and the top of the list comes up in speech all the time. That is why a set of a hundred everyday words noticeably changes how a trip feels. The next two and a half thousand add more slowly, but without them you will not reach 95 familiar words out of a hundred in conversation.
Then the curve flattens. The road from 3,000 to 6,000 words takes years and is travelled not by flashcards but by reading and listening: that many separate words cannot be memorized one by one at any pace.
How long that takes
Cambridge puts the road to level A2 at about 180–200 study hours, and to B1 at 350–400. It is the exam board's institutional benchmark, not a research finding: the spread between people is enormous, and it is bigger than the difference between languages.
What this is based on
Every number above comes from a study, linked next to it. The mark “checked little” means one study stands behind the conclusion — or that researchers still argue about it.
- To follow about 95% of ordinary conversation you need around 3,000 words. But 95% means one unknown word in twenty — not “I understand nearly everything”.checked many timesAdolphs & Schmitt, 2003, Applied Linguistics 24(4) · Counted across two large collections of recorded speech: CANCODE (5 million words) and the BNC. Word families were counted, not each form separately.
- Reading a book without a dictionary takes 8,000–9,000 words; following speech by ear just as freely takes 6,000–7,000.checked many timesNation, 2006, Canadian Modern Language Review 63(1); Hu & Nation, 2000 · The threshold for independent reading is 98% of words known, not 95%. Word families were counted.
- Getting by on simple subjects usually takes 180–200 hours of study. That is a very rough estimate: it works out differently for different people.checked littleCambridge English, Guided learning hours · A guideline from the Cambridge exam board for level A2; up to B1 it is 350–400 hours. It is the board's estimate, not a research finding.
Frequently asked
How many words for level A1?
Some 500–800 words. That is enough to greet, introduce yourself, order food, ask the price and the way — everyday situations with a predictable script.
Is it true that 1,000 words cover 80% of speech?
The order of magnitude is right: the first thousand frequent words do cover most of a conversation. But it is exactly the remaining percentages that carry meaning: function words repeat, while it is the rare ones that name things.
Should I count words I recognize but cannot recall myself?
For listening and reading — yes, recognition is enough. For speech — no: everyone's active vocabulary is noticeably smaller than their passive one, and that is normal even in your native language.