The Scale of N1 Kanji Knowledge
JLPT N1 requires mastery of approximately 2,000 kanji — the standard set of Jōyō kanji used in modern Japanese literacy. At this level, kanji recognition must be automatic. You will encounter obscure characters, unusual readings, and complex compound vocabulary in reading passages. Kanji knowledge at N1 is not an isolated study target but an integrated component of vocabulary, reading, and grammar mastery.
Organising N1 Kanji Study
Do not attempt to study 2,000 kanji in isolation from vocabulary. The most efficient approach is kanji-vocabulary integration: learn each kanji through the words in which it appears most commonly. The Core 6000 Anki deck organises vocabulary by frequency and naturally covers all Jōyō kanji through context. WaniKani covers approximately the first 1,700 kanji through its 60 levels. Shin Kanzen Master Kanji N1 organises the N1-specific kanji with vocabulary examples and practice questions.
On’yomi vs Kun’yomi at N1
At N1, you need both on’yomi (Chinese-derived readings, typically used in compound words) and kun’yomi (native Japanese readings, used when kanji appear alone or in verbal/adjectival forms). For example: 行 — kun’yomi: い(く), おこな(う); on’yomi: コウ、ギョウ、アン. N1 vocabulary questions occasionally test unusual or secondary readings of common kanji — kun’yomi of kanji normally encountered only in compounds, or on’yomi of kanji normally encountered only in isolation.
Four-Character Compounds (四字熟語) at N1
N1 includes questions on yojijukugo — four-character idiomatic compounds that express complex concepts concisely. Common N1 yojijukugo include: 一石二鳥 (killing two birds with one stone), 七転八倒 (rolling about in agony), 試行錯誤 (trial and error), 本末転倒 (putting the cart before the horse), 以心伝心 (tacit mutual understanding). Study at least 100 common yojijukugo — they appear not only in the kanji section but also in reading passages.
Daily Kanji Maintenance at N1 Level
At N1 level, daily SRS review is non-negotiable. With 2,000 kanji in your study set, cards due for review accumulate quickly if you miss even two or three days. Aim for a maximum Anki review session of 30 to 40 minutes per day. If your daily due cards exceed 200, reduce your new card introduction rate rather than skipping review. Consistency over 12 to 18 months produces N1-level kanji recognition more reliably than intensive short-term cramming.
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