Amount in Hangul
Writes a number as the formal Korean amount used on contracts — 일금 오백만원정 — and back again.
A contract writes an amount twice — once in digits and once as 일금 오백만원정 — so that a digit cannot be altered afterwards without the two disagreeing. Writing the Hangul form by hand is where the errors get introduced, particularly in the ten-thousands.
Amount
5000000, 오백만원, 3억5천 — either is read.
일금 오백만원정 — the form used on a contract or a receipt
Result
Digits
5,000,000원
Hangul
오백만
일금 오백만원정 (₩5,000,000)
정식 (일금 …원정)
오백만
일반 (천만원)
오백만
갖은자 한자 (壹金 …圓整)
伍佰萬
Several at once
One per line. Digits become Hangul and Hangul becomes digits, whichever it finds.
How to use it
Enter the number
The formal contract form — 일금 … 원정 — is produced, with the digit groups written the way a document expects rather than as a reading of the number.
Or paste the Hangul to get the number back
The reverse direction is for checking a document someone else wrote — read the Hangul, compare against the digits printed next to it.
Use 갖은자 where alteration matters
壹貳參 rather than 一二三 exist precisely because the simple forms can have strokes added. For a promissory note or a large contract, the elaborate forms are the convention.
Common questions
Why 정 at the end?
正 marks the end of the amount so that nothing can be appended after it. 일금 at the front does the same at the other end — together they bracket the figure.
Which form is correct for 35,000,000?
The contract form groups by 만 and 억, so it is 삼천오백만원 — not a digit-by-digit reading. The tool writes the grouped form, which is what a document expects.
Does it handle amounts with 원 below the won?
Korean contracts are written in whole won, and the tool follows that. A figure with decimals should be rounded before it is written into a document.
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