Number to Words

Integer part uses BigInt, so practically unlimited. English supports up to decillion (10^33); Korean / Japanese support up to 極 (10^48), more than enough for currency or scientific use.

English: 'three point one four'. Korean: '삼 점 일사'. Japanese: '三点一四'. Each digit after the decimal is read individually.

Sino-Korean (일, 이, 삼, …), which is the system used for prices, dates, and most formal contexts. Native Korean (하나, 둘, 셋) is for counting objects and ages and isn't generated here.

Close — most cheques want 'Twenty-five and 00/100' style with currency words. Use this output as a starting point and add the currency / cents phrasing manually.

A thousand million — this uses the short scale, where each new name is a thousand times the last: million 10⁶, billion 10⁹, trillion 10¹², quadrillion 10¹⁵. Most of continental Europe and much of Latin America use the long scale instead, where a billion is 10¹² and 10⁹ is a milliard, so the same digits get a different word. English-language finance and journalism settled on the short scale decades ago, but if you are translating a figure out of a European source, check which scale it was written in before trusting the word.

Because those languages count in ten-thousands, not thousands. Western grouping breaks at 10³ and renames every three digits; Korean and Japanese break at 10⁴ and rename every four — 만 / 万 is 10⁴, 억 / 億 is 10⁸, 조 / 兆 is 10¹², 경 / 京 is 10¹⁶. That is why 100,000,000 is 'one hundred million' in English but a single unit, 1억, in Korean, and why comma placement copied from an English document reads awkwardly in either language. The digits are identical; only where you cut them changes.