Which 31 do I use?
| Use | Korean | Sounds like | English |
|---|---|---|---|
| AgeNative | 서른한 살 | seoreunhan sal | 31 years old |
| Counting thingsNative | 서른한 개 | seoreunhan gae | 31 items |
| PeopleNative | 서른한 명 | seoreunhan myeong | 31 people |
| MinutesSino | 삼십일 분 | samsibil bun | 31 minutes |
| MoneySino | 삼십일 원 | samsibil won | ₩31 |
| Price in thousandsSino | 삼만 천 원 | samman cheon won | ₩31,000 |
| DateSino | 삼십일 일 | samsibil il | the 31st of the month |
| Floor, room, busSino | 삼십일 층 | samsibil cheung | floor 31 |
| OrderNative | 서른한 번째 | seoreunhan beonjjae | number 31 in order |
Good to know
- Before a counter word, 서른하나 shortens to 서른한: 서른한 개 (31 things), 서른한 살 (31 years old).
- 삼십일 is written that way but said [삼시빌]: linking (final moves to the next vowel).
How 삼십일 is built
삼십일 is 삼 (3) × 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 서른하나 has to be learned.
삼ㅅ+ㅏ+ㅁ십ㅅ+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 31 in Korean?
There are two ways: 삼십일 (samsibil) from the Sino-Korean system and 서른하나 (seoreunhana) from the native Korean system.
How do you say "I am 31 years old" in Korean?
서른한 살이에요 (seoreunhan sarieyo). Age uses native Korean numbers.
How do you say ₩31,000 in Korean?
삼만 천 원 (samman 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