With Calm earning the band their fourth consecutive number one in their home country, 5 Seconds of Summer became the second Australian band in history to have their first four full-length studio albums debut at number one on the ARIA albums chart. The album was a commercial success, receiving positive reviews from critics, charting in more than 25 countries on multiple charts, peaking in the 10 top on 17 charts and debuting atop the charts in 4 countries. In 2020, the band released their fourth studio album Calm. With the release of 'Youngblood', 5 Seconds of Summer became the first Australian act in 13 years to top the ARIA year-end chart and remain the second longest stint at number one in ARIA chart history.

The album's single, ' Youngblood' is the fourth highest selling Australian single of the 2010s decade and is the eleventh best-selling single in Australian history, selling over five million adjusted copies worldwide within the first six months of its release. They also became the first band (not vocal group) to have their first three full-length albums debut at the top in the US. In the US, 5 Seconds of Summer became the first Australian act to achieve three number one albums on the Billboard 200 album chart. The band's third album Youngblood, released in 2018, was yet another commercial success and became their third number one album in their home country.

The band released their second album Sounds Good Feels Good in 2015, topping the charts in 8 countries. Their self-titled debut album was released in 2014, peaking at number one in 11 countries. In early 2014, the band released ' She Looks So Perfect' which topped the charts in four countries. Since 2014, 5 Seconds of Summer have sold more than 10 million albums, sold over 2 million concert tickets worldwide, and have attained more than 7 billion streams of their songs on music streaming services, making them one of the most successful Australian musical acts in history. Originally beginning their career as YouTube celebrities, they rose to international fame while touring with English-Irish boy band One Direction on their Take Me Home Tour. The group consists of lead vocalist and rhythm guitarist Luke Hemmings, lead guitarist Michael Clifford, bassist Calum Hood, and drummer Ashton Irwin. 5 Seconds of Summer, often shortened to 5SOS, are an Australian pop rock band from Sydney, New South Wales, formed in late 2011.

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