The Japanese-Language Proficiency Test doesn't publish official vocabulary lists, but decades of test analysis have produced stable working estimates. Here's what each level actually demands, cumulatively:
| Level | Vocabulary | Kanji | What it means in practice |
|---|---|---|---|
| N5 | ~800 | ~100 | Classroom basics: set phrases, simple present/past, the survival core |
| N4 | ~1,500 | ~300 | Daily conversations on familiar topics, simple reading |
| N3 | ~3,750 | ~650 | The bridge level: newspapers with effort, most daily speech |
| N2 | ~6,000 | ~1,000 | Business-viable: meetings, news, most native material |
| N1 | ~10,000 | ~2,000 | Abstract, academic, editorial Japanese |
For English speakers, the U.S. Foreign Service Institute classes Japanese among the hardest languages it teaches (~2,200 classroom hours to professional proficiency). Community studies of JLPT candidates put N5 around 300–450 hours of study, N4 roughly double that, and each level beyond roughly doubling again. The spread is wide because method dominates: spaced repetition with real retrieval practice runs several times more efficient than passive review.
"I've studied 800 words" and "I'd pass N5 today" are different claims — the first is coverage, the second is retention under time pressure. Most apps show you a single satisfying progress bar; Yokoso shows both numbers separately (here's how that works for N5), because knowing which one is lagging tells you what to do next.
For visas, many jobs, and university admission: yes, formally. For daily life: the test doesn't measure speaking at all, and plenty of N2 holders freeze at an izakaya while test-free residents chat comfortably. If you live in Japan, the honest play is both: build street-functional Japanese first, and let JLPT coverage accumulate as a tracked side effect.
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