開 — to open

Grade 3かい, ひら, あ

Radical ⾨ · radical 169 The building block this kanji is filed under

開 (readings: かい, ひら, あ; Japanese kanji) means “to open”. It is a Grade 3 Kyōiku kanji, taught in year 3 of Japanese elementary school, and appears in words such as 開く (to open).

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What does 開 mean?

Full details, readings & example

Kanji	開
Meaning	to open
Readings	かい, ひら, あ
Grade	Grade 3 (Medium)
Curriculum	Kyōiku kanji · Japanese elementary school
Example	開く (to open)

How to read 開

開 is read かい or ひら or あ depending on the word.

Words with 開

展開てんかいtriển khai
満開まんかいnở rộ
開花かいかnở hoa
開通かいつうthông tuyến
開業かいぎょうkhai trương
開発かいはつphát triển
開放かいほうmở cửa
開始かいしbắt đầu
開かれひらかれđược tổ chức
開くmở ra

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Updated: 2026-08-09