確 — “certain / sure” in Japanese

Grade 5かく, たし

Radical ⽯ · radical 112 The building block this kanji is filed under

“certain / sure” in Japanese is 確, read kaku, tashi (かく, たし). It is a Grade 5 Kyōiku kanji, taught in year 5 of Japanese elementary school, and appears in words such as 確認 (confirmation).

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What does 確 mean?

Full details, readings & example

Kanji	確
Meaning	certain / sure
Readings	かく, たし
Grade	Grade 5 (Hard)
Curriculum	Kyōiku kanji · Japanese elementary school
Example	確認 (confirmation)

How to read 確

確 is read kaku (かく) or tashi (たし) depending on the word.

Words with 確

確認かくにん
確保かくほ

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Kanji read the same way as 確

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Updated: 2026-08-28