圏 — “Sphere / Circle / Radius / Range” in Japanese

Master (高手)けん, かこ

Radical ⼞ · radical 31 The building block this kanji is filed under

“Sphere / Circle / Radius / Range” in Japanese is 圏, read ken, kako (けん, かこ). It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 圏内 (within range).

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What does 圏 mean?

Full details, readings & example

Kanji	圏
Meaning	Sphere / Circle / Radius / Range
Readings	けん, かこ
Grade	Master (高手 · secondary school)
Curriculum	Jōyō kanji · Japanese secondary school (JLPT N1–N2)
Example	圏内 (within range)

How to read 圏

圏 is read ken (けん) or kako (かこ) depending on the word.

Words with 圏

首都圏しゅとけん
圏内

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Kanji read the same way as 圏

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

Updated: 2026-08-28