熱 — “heat / fever” in Japanese

Grade 4ねつ, あつ

Radical ⽕ · radical 86 The building block this kanji is filed under

“heat / fever” in Japanese is 熱, read netsu, atsu (ねつ, あつ). It is a Grade 4 Kyōiku kanji, taught in year 4 of Japanese elementary school, and appears in words such as 発熱 (fever).

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What does 熱 mean?

Full details, readings & example

Kanji	熱
Meaning	heat / fever
Readings	ねつ, あつ
Grade	Grade 4 (Upper)
Curriculum	Kyōiku kanji · Japanese elementary school
Example	発熱 (fever)

How to read 熱

熱 is read netsu (ねつ) or atsu (あつ) depending on the word.

Words with 熱

熱帯ねったい
熱気ねっき
熱帯低気圧ねったいていきあつ
発熱
熱狂
亜熱帯

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Kanji read the same way as 熱

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Updated: 2026-08-28