When searching for Jimin or Jin’s age, you’ll often find figures that don’t match from one site to another. The reason is rarely a mistake: it’s the age-counting system that differs. Jin was born on December 4, 1992, and Jimin on October 13, 1995.
By international age (completed years), Jin is 32 and Jimin is 29 as of March 2025. Under the former Korean age system, however, they could have been one or two years older, fueling years of confusion across online profiles.
Korean age vs. international age: why BTS members’ ages differ
In South Korea, babies were traditionally considered one year old at birth, then gained another year every January 1, regardless of their birth month. A BTS member born in December could therefore appear two years older than their international age for almost the entire calendar year.
Since June 28, 2023, international age has become the standard for administrative and legal purposes in South Korea. This reform makes things simpler for official documents. The former system may still come up in everyday life and certain social contexts, particularly when discussing the hierarchy among group members.
For anyone looking up Jimin and Jin’s ages in BTS on a French-language site, the practical rule is simple: check whether the source uses international age or the former Korean system, and above all, look at when the page was last updated. An article published in 2023 that hasn’t been updated will automatically show an outdated age in 2025.
BTS members’ birth dates and ages
The age gap between the group’s oldest and youngest members spans five calendar years. This difference shapes the group’s internal dynamic, particularly through the distinction between the Hyung Line (the older members) and the Maknae Line (the younger members).
- Jin, born on December 4, 1992, is the oldest member of the group. He is 32 in March 2025 and will turn 33 in December 2025.
- Suga, born on March 9, 1993, in Daegu, is just a few months younger than Jin.
- J-Hope, born on February 18, 1994, completes the trio of older members.
- RM, born on September 12, 1994, is the group’s leader despite being in the middle of the age hierarchy.
- Jimin, born on October 13, 1995, is the first member of the Maknae Line. He is 29 in March 2025.
- V, born on December 30, 1995, is just a few weeks younger than Jimin.
- Jungkook, born on September 1, 1997, is the group’s maknae (youngest member).
Jin and Jimin are nearly three years apart, which in Korean culture means a clear hyung-dongsaeng (older-younger) relationship. Jin rarely uses formal speech with his younger bandmates, but they use the appropriate honorifics when speaking to him.
Military service and key dates in BTS members’ timelines
Mandatory military service in South Korea applies to all men, generally before the age of 30 (though the age limit may vary depending on legal provisions). For BTS, the members’ absences were staggered over several years.
As the oldest member, Jin was the first to complete his service. He was discharged on June 12, 2024. Jimin completed his military service in June 2025. These discharge dates don’t coincide with the members’ birthdays, but they often serve as milestones in news coverage of the group.
Articles often confuse a member’s discharge date with their age, or try to work out their age based on the length of their service. This shortcut leads to errors. The only reliable information is their date of birth.
Checking a BTS member’s age: common pitfalls to avoid
The first thing to do when you see an age on a K-pop site is check when the page was published or updated. A profile created in 2022 and never updated will show an age that’s two or three years out of date.
Reliable sources and how to calculate age
The safest approach is to start with the date of birth and calculate the age in completed years yourself. Any source that doesn’t specify its age-counting system may be misleading.
Big Hit Entertainment’s official profiles (now HYBE) have used the international system since the 2023 reform. Collaborative wikis, on the other hand, depend on how carefully their contributors maintain them. Some profiles still mix the two systems without saying so.
The special case of Jimin and V
Jimin and V were born in the same year, less than three months apart. Before the reform, they were the same Korean age throughout the year. By international age, V is a few weeks younger, but this difference has no bearing on their relationship within the group: since they were born in the same year, they consider each other same-age friends (chingu) and speak casually to each other.
This distinction shows why birth year matters more than exact age in Korean social dynamics. Two people born in the same calendar year share the same hierarchical status, regardless of the month.
Ultimately, to find out the current age of any BTS member, you only need two basic facts: their date of birth and today’s date. Everything else, including automated profiles and undated listings, introduces a risk of error that South Korea’s 2023 reform has reduced but not entirely eliminated.
