Japanese Number to Words in JavaScript (ja-JP)

Locale codes: ja-JP · Numbering system: East Asian · Currency: Yen · Script: Kanji + Kana

Install

npm install to-words

Basic Conversion

import { ToWords } from 'to-words';

const tw = new ToWords({ localeCode: 'ja-JP' });
tw.convert(12345); // "一万二千三百四十五"
tw.convert(100000000); // "一億"
tw.convert(1234, { currency: true }); // "千二百三十四円"

East Asian Scale

Value	Character
10^4	万
10^8	億
10^12	兆
10^16	京

Related

• Chinese
• Korean
• Currency guide

FAQ

Q: What locale code is used for Japanese?
A: ja-JP.