Luke Hemmings

Luke Hemmings is the lead singer and one of the guitarists of the band 5 Seconds Of Summer. He is the youngest of the band, being 21 years old.His birthday is July 16, 1996. Luke has 2 older brothers, Ben and Jack. He is from Sydney,Australia, but lives in California. He is the one who started posting covers on Youtube, originally alone, but soon joined by Michael and Calum, and eventually Ashton.

Calum Hood

Calum Hood is the bassist of the band, as well as vocals. He is the second youngest of the band, being 21 but only a few months older than Luke. His birthday is January 21, 1996. Calum has an older sister, Mali Koa, who is also a singer. Calum is from Sydney, Austrlia, but lives in California as well. He was best friends with Michael in school when they both joined Luke on Youtube.

Ashton Irwin

Ashton Irwin is the drummer of the band, as well as vocals. He is the eldest, being 23 years old. His birthday is July 7, 1994. Ashton is also the oldest of his 2 siblings, Lauren and Harry. He acts as a father to them because his father left them when Ash was young. He is also from Sydney, but lives in California. He was friends with the other boys on Facebook, and was asked to be in the band.

Michael Clifford

Michael Clifford is the lead guiarist of the band, alo on vocals. He is right in the middle when it comes to age. He just turned 22 years old. His birthday is November 20, 1995. Michael is an only child. He, just like the others, is from Sydney, but lives in California. Him and Calum were best friends, while for a good year, him and Luke hated each other. But then they became friends and made the band.