Quick answer
億 is the kanji for "Hundred million". A common reading is おく (oku). You can also practice writing it on this page.
Meaning
Hundred million
Learn 億 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
15 strokes
Radicals
Memory Aid
The kanji 億 represents 'HUNDRED MILLION'. Think of this shape as a picture representing the concept of hundred million.
On-reading: おく — remember this sound by associating it with hundred million.
Example Sentences
宝くじで一億円当たったら、何をしたいですか？
たからくじでいちおくえんあたったら、なにをしたいですか？
If you won 100 million yen in the lottery, what would you want to do?
この会社は年間売上高が百億円を超えています。
このかいしゃはねんかんうりあげだかがひゃくおくえんをこえています。
This company's annual sales exceed 10 billion yen.
Vocabulary using 億
Grammar to study at this level
- [Noun] + に伴い～に伴い (ni tomonai) - Along with / In accordance with
- [Noun] + をはじめ～をはじめ (wo hajime) - Starting with / Including
- [Noun] + に応じて～に応じて (ni oujite) - According to / In response to
- [Noun] + から + [Noun] + にかけて～にかけて (ni kakete) - From...to / In the area of
- [Noun] + に限り～に限り (ni kagiri) - Limited to / Only
Last updated Jun 11, 2026
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