How does Japanese write large and small numbers?

Japanese uses a different counting system for large numbers to English. In English, numbers increase by thousands, so one thousand, one million, then one billion, a thousand times a million. Japanese is based on the Chinese system which uses ten thousand as a basic unit. A man (万) is ten thousand, and then an oku (億) is ten thousand times ten thousand, a hundred million. Increasing in number, a chou (兆) is ten thousand times an oku, or a trillion. The following list shows the first few of these large numbers.

Kanji Pronunciation As numerals As English
一 いち 1 One
十 じゅう 10 Ten
百 ひゃく 100 One hundred
千 せん 1,000 One thousand
万 まん 10,000 Ten thousand
億 おく 100,000,000 One hundred million
兆 ちょう 1,000,000,000,000 One trillion
京 けい 10,000,000,000,000,000 Ten quadrillion

The following representations of very large and small numbers also exist. Many of these originate from Buddhist terminology.

Kanji Kana Romaji Value as power of ten Notes
一 いち ichi
十 じゅう jū 101
百 ひゃく hyaku 102
千 せん sen 103
万 まん man 104
億 おく oku 108
兆 ちょう chō 1012
京 けい kei 1016
垓 がい gai 1020
𥝱 じょ jo 1024
穰 じょう jō 1028
溝 こう kō 1032
澗 かん kan 1036
正 せい sei 1040
載 さい sai 1044
極 ごく goku 1048
恒河沙 ごうがしゃ gōgasha 1052 Originally a Buddhist term. 恒河 (Gōga) means the river Ganges in India, and this means "the number of grains of sand in the Ganges river".
阿僧祇 (阿僧梢) あそうぎ asōgi 1056 From the Sanskrit 'asamkhya', meaning a very large number.
那由他 なゆた nayuta 1060 From the Sanskrit 'nayuta', meaning a very large number.
不可思議 ふかしぎ fukashigi 1064
無量大数 むりょうたいすう muryōtaisū 1068
分 ぶ bu 10-1
厘 (釐) りん rin 10-2
毛 もう mō 10-3
糸 (絲) し shi 10-4
忽 こつ kotsu 10-5
微 び bi 10-6
繊 せん sen 10-7
沙 しゃ sha 10-8
塵 じん jin 10-9
埃 あい ai 10-10
渺 びょう byō 10-11
漠 ばく baku 10-12
模糊 もこ moko 10-13
逡巡 しゅんじゅん shunjun 10-14
須臾 しゅゆ (すゆ) shuyu (suyu) 10-15
瞬息 しゅんそく shunsoku 10-16
弾指 だんし danshi 10-17 From the Sanskrit 'acchataa'.
殺那 せつな setsuna 10-18 From the Sanskrit 'kṣaṇa', meaning a very short period of time.
六徳 りっとく rittoku 10-19
虚 きょ kyo 10-20
空 くう kū 10-21
清 せい sei 10-22
浄 じょう jō 10-23

About the kanji links: Choose the site for kanji links at the kanji.sljfaq.org options page.


See also the FAQ's Western to Kanji and Kanji to Western number converters.

Convert a number in English or arabic numerals into kanji:

Convert a kanji number into English and arabic numerals:

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