Quick answer
界 is the kanji for "World". A common reading is かい (kai). You can also practice writing it on this page.
Meaning
World
Also : Boundary · Realm
Learn 界 with SRS
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Readings
kun = Japanese reading · on = Chinese reading
Practice writing
Trace the kanji stroke by stroke with a visual guide.
Stroke Order
9 strokes
Radicals
Memory Aid
The kanji 界 represents 'WORLD'. Think of this shape as a picture representing the concept of world.
On-reading: かい — remember this sound by associating it with world.
Example Sentences
世界遺産を訪れました。
せかいいさんをおとずれました。
I visited a World Heritage Site.
学界で有名な先生です。
がっかいでゆうめいなせんせいです。
He's a famous professor in academic circles.
Vocabulary using 界
Grammar to study at this level
Last updated Jul 4, 2026
Learn 界 with Spaced Repetition
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