How to Study Kanji: A Method That Actually Holds to Test Day

Most kanji advice is either "just memorize them" or a 40-minute system complicated enough that you quit on day three. Here's the middle version — a method that holds because it's built around what memory does, not around ideal study.

Step 1: Meet radicals before kanji

A kanji without its components is a picture; a kanji with its components is a word you can decode. Learn ~50 radicals first (人, 水, 木, 手, 心, 言, 貝…), then every new kanji becomes a combination of things you already know.

The payoff is geometric: 650 kanji becomes roughly 300 "radical families + variations" — about half the total memory load.

You don't need to learn these as separate study items — just meet each one once, then every new kanji that reuses it is a modified memory rather than a new one.

Step 2: Learn the kanji with a word, never alone

The fastest way to forget a kanji is to learn it as a shape. A kanji is only usable inside a word — which is also how the JLPT tests it (inside furigana-tagged sentences, not as isolated symbols).

For every new kanji, learn one word with it as a fixed pair:

That word-pair habit is why spaced-repetition decks that show compound readings work — the shape, reading and meaning travel together.

Step 3: Reading vs. writing — pick your priority

The JLPT does not test handwriting. It tests recognition: given 貸す or 貸して, do you know what it means and how it's read?

So reading ability is the target — not stroke order. Practically:

• Learn to READ first — the shape, the reading, the word. This is what pays on the exam.
• Skip writing practice unless you enjoy it for its own sake — it triples study time for a skill the test doesn't measure.
• Exceptions: if you're preparing for a job in Japan or Japanese school entrance, add writing later; for JLPT, spend that hour on reading input instead.

Step 4: Space it (SRS — no way around this one)

Cramming works for 1–2 weeks. After a month, you've forgotten the majority of what you crammed. Spaced repetition schedules each review at the moment you'd otherwise forget:

The principle isn't the intervals — it's that every review happens just as you're about to forget. Reviewing too early wastes time; too late means relearning.

Step 5: The mistake loop (your highest-value cards)

Generic kanji lists tell you what someone else found hard. Your own wrong answers tell you what you find hard:

• Every JLPT question you get wrong shows exactly which kanji in context beat you — and how (reading misread? similar-looking kanji confused? word read as another with the same shape?)
• Flashcards built from your mistakes carry that context with them — which sentence tripped you, which distractor fooled you
• Over a few weeks, your "mistake-deck" concentrates on the 20–30 kanji that are genuinely costing you points, instead of the 30 you already know

That's the loop: test → mistake → card → spaced review → test. It's faster and more targeted than any generic list, because your personal failure points are visible in the data.

The two real blockers (and how to handle them)

1. Similar-looking kanji (貸/貨/資/質, 待/侍, 未/末). The fix isn't more cards — it's contrast pairs: learn 貸す (lend) next to 貨 (freight) and 質 (quality/substance). The difference becomes a story ("the one with 貝 is about money").
2. Readings that change by context (日 = にち/ひ, 人数 = にんずう). The fix isn't memorizing readings in isolation — it's memorizing the word (人数 = people count) and letting the reading ride along inside it.

What a week of this looks like

That's about 35–40 minutes of kanji work per day, which is enough to reach N5's 100 kanji in 2–3 weeks and N4's 300 in about 2.5 months — at sustainable pace, without burnouts.