In Korea, a person who is 13 years old by international reckoning is considered 14 years old using the traditional Korean age system.
According to KoreanClass101:
| Birth Year | International Age | Korean Age |
|---|---|---|
| 2013 | 12 years old | 열두 살 |
| 2012 | 13 years old | 열세 살 |
| 2011 | 14 years old | 열네 살 |
| 2010 | 15 years old | 열다섯 살 |
This table demonstrates how Korean age differs from the international standard. If someone is 13 years old according to their birth date, in Korea, they are considered 14 years old. The Korean age system typically adds one year to a person's age at birth, and then an additional year is added on January 1st.
