How to Write Amounts in Korean for Contracts — "일금 …원정" Converter (Free)
Jun 22, 2026
Have you ever written just "₩1,234,567" on a contract or loan note? The problem is that plain digits are surprisingly easy to alter — adding a leading "1" or an extra "0". That's why Korean contracts also spell the amount out in Hangul, e.g. "일금 일백이십삼만사천오백육십칠원정", so it can't be quietly changed. This guide shows the easiest way to convert a number into this contract notation, plus the rules behind it. No install, no sign-up.
Type a number and the "일금 …원정" Hangul notation appears instantly. Copy and paste it into your contract. Free, no sign-up.
Convert amount to Korean →Why amounts are written in Hangul
- Tamper prevention — Arabic numerals (1,000,000) are easy to alter by adding a "0" or changing a digit. Writing the amount in Hangul as well makes such changes practically impossible and prevents disputes.
- The role of "일금" and "원정" — The leading "일금 (一金)" means "this amount is," fixing the start of the figure, and the trailing "원정 (整)" means "exactly, no remainder," blocking anyone from appending more digits.
- Common practice — Korean contracts, loan notes, receipts, quotations, and tax invoices typically write the amount in both digits and Hangul.
How to convert — 2 steps
- Enter the number — Type the amount as digits (e.g. 1234567) in Korean amount converter.
- Copy & paste — "일금 일백이십삼만사천오백육십칠원정" appears at once. Copy it into your contract. A comma format (1,234,567원) is also shown so you can place the digits and Hangul side by side.
Examples
| Number | Contract notation |
|---|---|
| 50,000 | 일금 오만원정 |
| 1,234,567 | 일금 일백이십삼만사천오백육십칠원정 |
| 10,000,000 | 일금 일천만원정 |
| 350,000,000 | 일금 삼억오천만원정 |
Tips
- Begin with "일금" and end with "원정". The converter handles 만 (ten-thousands), 억 (hundred-millions), and 조 (trillions).
- For safety, write both the digits (₩1,234,567) and the Hangul together.
- For stricter documents like promissory notes that need the formal Hanja figures (壹·貳·參…), use the number → Hanja converter.
Tools that work well together
To collect a signature on a contract that already has the amount written in Hangul, use Fill & Sign a PDF to fill in the amount, date, and signature yourself, or use FreeSign e-signature to request a signature from the other party. The full free e-contract flow is covered in the free e-contract guide.
Type a number, get "일금 …원정." Copy and use right away. Free.
Convert now →Frequently asked questions
Q. What does "원정" mean?
It is the Hanja "整," meaning "exactly, no remainder." It blocks anyone from appending more digits after the amount, preventing tampering.
Q. Can I write it in Hanja figures?
If a promissory note or certificate requires Hanja figures such as 壹·貳·參, use the number → Hanja converter.
Q. Does it handle large amounts?
Yes. It converts up to 만, 억, and 조 units.
Q. Is it free? Is my input stored?
It is free, and the conversion runs in your browser, so the amount you enter is not stored on the server.