Kjellberg was born on 24 October 1989, in Gothenburg, Sweden, where he was also raised.
He was born to Lotta Kristine Johanna (née Hellstrand, born 7 May 1958) and Ulf Christian Kjellberg (born 8 January 1957), and grew up with his older sister Fanny.
His mother, a former chief information officer (CIO), was named the 2010 CIO of the Year in Sweden.
His father is also a corporate executive.

During his childhood, Kjellberg was interested in art, and has detailed that he would draw popular video game characters such as Mario and Sonic the Hedgehog, as well as play video games on his Super Nintendo Entertainment System.
During high school, he would skip classes to play video games at an Internet café with friends.
He then went on to pursue a degree in industrial economics and technology management at Chalmers University of Technology, but left the university in 2011.
While it has been reported that he left Chalmers to focus on his YouTube career, in 2017, Kjellberg clarified that he left because of his lack of interest in his course of study.
He expressed that, in general, leaving university to pursue a YouTube career would be "fucking stupid".

Kjellberg has also discussed an enjoyment of Adobe Photoshop, wanting to work on photo manipulation art using the program rather than be in school.
Following this passion after his departure from Chalmers, he entered Photoshop contests and almost earned an apprenticeship at a prominent Scandinavian advertising agency.
He was also interested in creating content on YouTube; after not earning the apprenticeship, he sold limited edition prints of his photoshopped images to purchase a computer to work on YouTube videos.
Kjellberg was born on 24 October 1989, in Gothenburg, Sweden, where he was also raised. He was born to Lotta Kristine Johanna (née Hellstrand, born 7 May 1958) and Ulf Christian Kjellberg (born 8 January 1957), and grew up with his older sister Fanny. His mother, a former chief information officer (CIO), was named the 2010 CIO of the Year in Sweden. His father is also a corporate executive.
During his childhood, Kjellberg was interested in art, and has detailed that he would draw popular video game characters such as Mario and Sonic the Hedgehog, as well as play video games on his Super Nintendo Entertainment System. During high school, he would skip classes to play video games at an Internet café with friends. He then went on to pursue a degree in industrial economics and technology management at Chalmers University of Technology, but left the university in 2011. While it has been reported that he left Chalmers to focus on his YouTube career, in 2017, Kjellberg clarified that he left because of his lack of interest in his course of study. He expressed that, in general, leaving university to pursue a YouTube career would be "fucking stupid".
Kjellberg has also discussed an enjoyment of Adobe Photoshop, wanting to work on photo manipulation art using the program rather than be in school. Following this passion after his departure from Chalmers, he entered Photoshop contests and almost earned an apprenticeship at a prominent Scandinavian advertising agency. He was also interested in creating content on YouTube; after not earning the apprenticeship, he sold limited edition prints of his photoshopped images to purchase a computer to work on YouTube videos.
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