径 — “diameter / path” in Japanese

Grade 4けい

Radical ⼻ · radical 60 The building block this kanji is filed under

“diameter / path” in Japanese is 径, read kei (けい). It is a Grade 4 Kyōiku kanji, taught in year 4 of Japanese elementary school, and appears in words such as 直径 (diameter).

Try it now

What does 径 mean?

Full details, readings & example

Kanji	径
Meaning	diameter / path
Readings	けい
Grade	Grade 4 (Upper)
Curriculum	Kyōiku kanji · Japanese elementary school
Example	直径 (diameter)

How to read 径

径 is read kei (けい) depending on the word.

Words with 径

直径ちょっけい

Learn 径 in real sentences — free

Read stories and news built from only the kanji you already know. KanjiSchool’s path covers all 2,136 Jōyō kanji — 1,018 ready to learn now.

Start free — no credit card →

Kanji read the same way as 径

Same sound, different character — the classic trap. Compare them side by side:

Read this character in a real sentence

Updated: 2026-08-28