Number to Korean Words
Write a number the way Korean contracts and invoices do, in hangul and in the formal hanja numerals, with the 금 ... 원정 wrapper.
Commas are fine. Whole numbers only.
Adds 금 at the front and 원정 at the end, as on a contract.
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How to use
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Type a number and it is written out four ways at once: grouped with commas, read aloud in Korean, in the formal amount style, and in the hanja numerals used on contracts.
Korean groups digits by ten thousand, not by thousand, which is why converting from a comma-grouped figure is error-prone by hand. 12,345,678 is not twelve million but 천이백삼십사만 오천육백칠십팔, and the comma positions line up with neither.
Reading and the formal amount style differ in one specific way: the formal style keeps the leading 일. Ten thousand is read 만 but written 일만 on a contract, because dropping the 일 leaves room to insert another digit in front of it. The same reasoning is why the amount is wrapped as 금 ... 원정.
The hanja column uses the financial numerals 壹貳參 rather than 一二三. These have more strokes precisely so that 一 cannot be altered into 二 or 三 with a pen. They still appear on promissory notes and older contracts.
Decimals are refused rather than rounded. There is no settled rule for writing a fraction in this notation, and a rounded figure on a contract is a wrong figure.
Everything is computed in your browser. Amounts on a contract are exactly the sort of thing that should not travel to a server to be formatted.