Source: https://www.knetizen.com/total…s-ranking-of-k-pop-idols/
Total album sales ranking of K-Pop idols
Albums released in Korea and albums released overseas
Including solos and units
Total sales from debut date to July 2021
35,501,312 copies
87% of domestic album sales
13% of album sales in Japan
20,549,783 copies
96% of domestic album sales
4% of album sales in Japan
#3 NCT (NCT + NCT 127 + NCT Dream + WayV) (debuted in 2016)
13,953,303 copies
98% of domestic album sales
2% of album sales in Japan
#4 TVXQ (debuted in 2004)
11,421,478 copies
32% of domestic album sales
68% of album sales in Japan
#5 TWICE (debuted in 2015)
10,030,509 copies
65% of domestic album sales
35% of album sales in Japan
#6 Seventeen (debuted in 2015)
9,627,264 copies
83% of domestic album sales
17% of album sales in Japan
#7 SHINee (debuted in 2008)
7,834,866 copies
72% of domestic album sales
28% of album sales in Japan
#8 Super Junior (debuted in 2005)
7,469,285 copies
79% of domestic album sales
21% of album sales in Japan
#9 SNSD (debuted in 2007)
6,507,610 copies
60% of domestic album sales
40% of album sales in Japan
#10 H.O.T. (debuted in 1996)
6,057,000 copies
100% of domestic album sales
#11 BIGBANG (debuted in 2006)
5,771,137 copies
70% of domestic album sales
30% of album sales in Japan
#12 god (debuted in 1999)
5,168,000 copies
100% of domestic album sales
#13 GOT7 (debuted in 2014)
4,637,336 copies
90% of domestic album sales
10% of album sales in Japan
#14 KARA (debuted in 2007)
3,794,563 copies
16% of domestic album sales
84% of album sales in Japan
#15 Wanna One (debuted in 2017)
3,624,580 copies
100% of domestic album sales
#16 S.E.S (debuted in 1997)
3,579,859 copies
99% of domestic album sales
1% of album sales in Japan
#17 MONSTA X (debuted in 2015)
3,549,401 copies
73% of domestic album sales
27% of album sales in Japan
#18 BLACKPINK (debuted in 2016)
3,495,960 copies
95% of domestic album sales
5% of album sales in Japan
#19 Shinhwa (debuted in 1998)
3.43 million copies
100% of domestic album sales
#20 2PM (debuted in 2008)
3,401,167 copies
30% of domestic album sales
70% of album sales in Japan
#21 IZ*ONE (debuted in 2018)
3,033,257 copies
69% of domestic album sales
31% of album sales in Japan
#22 TXT (debuted in 2019)
2,714,303 copies
89% of domestic album sales
11% of album sales in Japan
#23 INFINITE (debuted in 2010)
2,633,706 copies
84% of domestic album sales
16% of album sales in Japan
#24 Stray Kids (debuted in 2018)
2,507,456 copies
96% of domestic album sales
4% of album sales in Japan
#25 Sechs Kies (debuted in 1997)
2.48 million copies
100% of domestic album sales
#26 Red Velvet (debuted in 2014)
2,147,826 copies
98% of domestic album sales
2% of album sales in Japan
Knets comments:
original post: pann
1. [+112, -8] TWICE is crazyㅋㅋㅋㅋ
2. [+74, -6] Over 35 million copies, BTS is legendaryㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋ
3. [+57, -7] TWICE..ㅋㅋㅋㅋㅋㅋㅋㅋㅋ As expected
4. [+26, -1] No matter what you think of TWICE, they sold over 10 million copies… that’s crazy
5. [+23, -0] BTS sold 15 million copies 2 years ago, but the number has increased to 20 millionㅋㅋ
6. [+19, -0] BTS’ Korean albums alone surpassed 30 million copies
7. [+15, -2] TWICE is a girl group but they’re at the top.. daebak
8. [+14, -29] Wow NCT debuted in 2016, but they ranked 3rd.. NCT is the best
9. [+13, -1] TWICE is a legend among male idols.. 10 million copies
The photos were showing up weirdly so I put it in the spoiler. Also idk much about sales so you'll are free to debate it with someone who is more well versed! I'm just happy to see my girls twaisu in top 4!