Sometimes these days, it seems like Korean entertainment companies are debuting idols at a younger and younger age. But is that really the case, or have idols always debuted at a young age? This list is a compilation of the ages of debut for 21 different male K-Pop groups, by taking the average age of all the members within each group on the date of their debut. Check them out below to see which groups debuted at the youngest and oldest average ages!

21. NCT Dream: 15.6 years old

21

Renjun: 16

Jeno: 16

Haechan: 16

Chenle: 14

Jisung: 14

Jaemin: 16

Mark: 17

20. SHINee: 16.4 years old

20

Taemin: 14

Key: 16

Jonghyun: 18

Minho: 16

Onew: 18

19. BIGBANG: 17.2 years old

19

Seungri: 15

Taeyang: 18

Daesung: 17

T.O.P: 18

G-Dragon: 18

18. ASTRO: 17.3 years old

18

Sanha: 15

MJ: 18

Rocky: 16

JinJin: 19

Moonbin: 18

Eunwoo: 18

17. TXT: 17.4 years old

17

Soobin: 18

Taehyun: 17

Huening Kai: 16

Beomgyu: 17

Yeonjun: 19

16. SEVENTEEN: 17.8 years old

16

Dino: 16

Vernon: 17

Seungkwan: 17

The8: 17

Mingyu: 18

Jun: 18

Wonwoo: 18

DK: 18

Hoshi: 18

Woozi: 18

Joshua: 19

Jeonghan: 19

S.Coups: 19

15. GOT7: 18 years old

15

Yugyeom: 16

BamBam: 16

Mark: 19

Jackson: 19

Youngjae: 17

Jinyoung: 19

JB: 20

14. Stray Kids: 18.1 years old

14

Bang Chan: 20

Hyunjin: 18

I.N: 17

Felix: 17

Chanbin: 18

Seungmin: 17

Han: 17

Lee Know: 19

Woojin: 20

13. The Boyz: 18.6 years old

13

Sangyeon: 20

Jacob: 20

Younghoon: 20

Hyunjae: 20

Juyeon: 19

Kevin: 19

New: 19

Q: 18

Juhaknyeon: 18

Sunwoo: 17

Eric: 16

Hwall: 17

12. BTS: 18.7 years old

12

Jungkook: 16

V: 18

Jimin: 18

J-Hope: 19

Suga: 20

RM: 19

Jin: 21

11. iKON: 18.7 years old

11

B.I: 18

Bobby: 19

Jay: 21

Ju-ne: 18

Song: 20

DK: 18

Chan: 17

10. ATEEZ: 18.9 years old

10

Jongho: 18

Mingi: 19

San: 19

Wooyoung: 18

Yeosang: 19

Yunho: 19

Seonghwa: 20

Hongjoong: 19

9. NCT 127: 19.1 years old

9

Taeyong: 21

Jaehyun: 19

Yuta: 20

WinWin: 18

Haechan: 16

Jungwoo: 18

Johnny: 21

Mark: 16

Doyoung: 20

Taeil: 22

8. VIXX: 19.2 years old

8

Hyuk: 16

Hongbin: 18

Ravi: 19

Ken: 20

Leo: 21

N: 21

7. EXO: 19.5 years old

7

Sehun: 17

Kai: 18

Chanyeol: 19

Baekhyun: 19

Suho: 21

D.O: 19

Lay: 20

Tao: 18

Kris: 21

Luhan: 21

Chen: 19

Xiumin: 22

6. Super Junior: 19.6 years old

6

Kyuhyun: 17

Ryeowook: 18

Sungmin: 19

Shindong: 20

Kangin: 20

Donghae: 19

Eunhyuk: 19

Kibum: 18

Hankyung: 21

Siwon: 19

Yesung: 21

Heechul: 22

Leeteuk: 22

5. SF9: 19.9 years old

5

Chani: 16

Hwiyoung: 17

Youngbin: 22

Inseong: 22

Rowoon: 20

Zuho: 20

Dawon: 21

Taeyang: 19

Jaeyoon: 22

4. PENTAGON: 20.4 years old

4

Hui: 23

Jinho: 24

Hongseok: 22

Shinwon: 20

Yanan: 19

Yeo One: 20

Yuto: 18

Kino: 18

Wooseok: 18

E’Dawn: 22

3. MONSTA X: 20.9 years old

3

I.M: 19

Jooheon: 20

Minhyuk: 21

Wonho: 22

Kihyun: 21

Hyungwon: 21

Shonwu: 22

2. WINNER: 21 years old

2

Mino: 21

Yoon: 20

Jinu: 22

Hoony: 22

Taehyun: 20

1. DAY6: 21.2 years old

1

Jae: 22

Wonpil: 21

Young K: 21

Sungjin: 22

Dowoon: 20