一万(いちまん)

いちまん
number
ten thousand; 10,000
1. ten thousand; 10,000
The number 10,000. 万(まん) is a base counting unit in Japanese, so larger numbers like 一億(いちおく) (100,000,000) are formed as multiples of まん rather than of millions.
一万円(いちまんえん)札(さつ)を使(つか)った。
I used a 10,000-yen bill.
そのコンサートには一万人(いちまんにん)が集(あつ)まった。
Ten thousand people gathered at that concert.
毎日(まいにち)一万歩(いちまんぽ)歩(ある)くことを目標(もくひょう)にしている。
I'm aiming to walk 10,000 steps every day.

Note that the 一(いち) is required: just "万(まん)" alone is not used as a number on its own (unlike English "thousand," which can stand alone as a quantity).

COMMON COLLOCATIONS:

  • 一万円(いちまんえん): 10,000 yen
  • 一万円札(いちまんえんさつ): 10,000-yen bill
  • 一万人(いちまんにん): 10,000 people
  • 一万歩(いちまんぽ): 10,000 steps
  • 一万倍(いちまんばい): ten thousand times

NUMBER REFERENCE:

  • 千(せん): 1,000
  • 一万(いちまん): 10,000
  • 十万(じゅうまん): 100,000
  • 百万(ひゃくまん): 1,000,000
  • 一億(いちおく): 100,000,000

NOTE:
Larger numbers in Japanese are grouped by ten-thousands rather than thousands, so reading large figures often requires re-parsing. For example, 250,000 is 二十五万(にじゅうごまん), not 二百五十千(にひゃくごじゅっせん).

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Added 2026.5.14 13:05
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