What is
What is JLPT Kanji Level Checker?
JLPT preparation and Japanese-language teaching both need an honest answer to one question: 'how hard is this passage actually?' Looking at a paragraph and guessing is unreliable, especially around the N4–N3 boundary where a single uncommon kanji can shift the difficulty band. This checker classifies every kanji in the input against the widely-used pre-2010 JLPT reference lists and shows the level distribution at a glance.
The tool reports both unique kanji per level and total occurrences per level, so you can see whether one rare kanji is repeated many times (e.g., a character name) or whether the text is consistently dense across levels. The unique-kanji list at each tier is copyable for Anki imports or follow-up vocabulary study.
How to use
How to use JLPT Kanji Level Checker
1. Paste a Japanese passage into the input area.
2. The stacked bar shows the percentage of total kanji at each JLPT level.
3. Each level panel lists the unique kanji at that level — copy the list directly for flashcard import.
4. If most kanji fall in N3+ while the target audience is N5, the passage needs rewriting.
Example
Example
Sample paragraph (12 unique kanji):
• N5: 5 kanji (42%) — 日, 本, 学, 文, 字
• N4: 4 kanji (33%) — 章, 教, 材, 確
• N3: 2 kanji (17%) — 観, 客
• N2: 1 kanji (8%) — 把
• N1+: 0Common use cases
Common use cases
1. JLPT learners reading native material — confirm whether a passage matches their study level.
2. Teachers building N3/N4 reading comprehension worksheets that should not contain N1 kanji.
3. Translators localizing for a school-textbook audience that has a hard kanji ceiling.
4. Material authors deciding when to introduce furigana versus when the audience should already know the kanji.
Frequently asked questions