Which 51 do I use?
| Use | Korean | Sounds like | English |
|---|---|---|---|
| AgeNative | 쉰한 살 | swinhan sal | 51 years old |
| Counting thingsNative | 쉰한 개 | swinhan gae | 51 items |
| PeopleNative | 쉰한 명 | swinhan myeong | 51 people |
| MinutesSino | 오십일 분 | osibil bun | 51 minutes |
| MoneySino | 오십일 원 | osibil won | ₩51 |
| Price in thousandsSino | 오만 천 원 | oman cheon won | ₩51,000 |
| Floor, room, busSino | 오십일 층 | osibil cheung | floor 51 |
| OrderNative | 쉰한 번째 | swinhan beonjjae | number 51 in order |
Good to know
- Before a counter word, 쉰하나 shortens to 쉰한: 쉰한 개 (51 things), 쉰한 살 (51 years old).
- 오십일 is written that way but said [오시빌]: linking (final moves to the next vowel).
How 오십일 is built
오십일 is 오 (5) × 십 (10) + 일 (1). Once you know 1 to 10, Sino-Korean numbers build themselves. In native Korean, the tens have their own words (열, 스물, 서른, 마흔, 쉰, 예순, 일흔, 여든, 아흔), so 쉰하나 has to be learned.
오ㅇ+ㅗ십ㅅ+ㅣ+ㅂ일ㅇ+ㅣ+ㄹ
Need a bigger number, a price or a phone number? The Korean number converter handles any number, both systems, dates and times.
Frequently asked questions
How do you say 51 in Korean?
There are two ways: 오십일 (osibil) from the Sino-Korean system and 쉰하나 (swinhana) from the native Korean system.
How do you say "I am 51 years old" in Korean?
쉰한 살이에요 (swinhan sarieyo). Age uses native Korean numbers.
How do you say ₩51,000 in Korean?
오만 천 원 (oman cheon won). Money always uses Sino-Korean numbers, and Korean counts big amounts in units of 10,000 (만).
Romanization: Revised Romanization of Korean, with sound changes. Audio: a recorded native-sounding Korean voice.
Last checked: 2026-10-20