一 億(いちおく)

いちおく

noun, number

one hundred million, 100 million

1. one hundred million (100,000,000)

The number 100 million; a fundamental unit in the Japanese number system.

一億(いちおく)円(えん)の宝(たから)くじに当(あ)たった。

I won a 100 million yen lottery.

日本(にほん)の人口(じんこう)は約(やく)一億(いちおく)二千万(にせんまん)人(にん)だ。

Japan's population is about 120 million people.

この映画(えいが)は一億(いちおく)ドルを稼(かせ)いだ。

This movie made 100 million dollars.

一億(いちおく) is the number 100 million in the Japanese number system.

Japanese number system

一(いち): 1
十(じゅう): 10
百(ひゃく): 100
千(せん): 1,000
万(まん): 10,000
億(おく): 100,000,000 (100 million)
兆(ちょう): 1,000,000,000,000 (1 trillion)

Common expressions

一億(いちおく)円(えん): 100 million yen
一億(いちおく)人(にん): 100 million people
一億(いちおく)総(そう)〜: (prefix) all 100 million (Japanese people)
一億(いちおく)総(そう)活躍(かつやく): active participation by all citizens

Cultural note

一億(いちおく) is often used to represent the entire Japanese population in expressions like 一億(いちおく)総(そう)〜 (all 100 million Japanese...).

general

Added 2026.1.29 12:43 · Revised 2026.9.2 13:01

08500/08929_ichioku