BTS members age, height, and religion Rap Monster is 24 and J-Hope is 25 years old. V and Jimin are both 23 years old, while Jungkook is the youngest, at 21. Looking at each BTS members height, we can see that RM towers the rest of the group at 181.68 cm or 5'11” and Jin at close second with 179cm or 5'10 ½.