Subscribers and viewership
Media writers have noted that Kjellberg's content has been largely built up "methodically," as opposed to him having risen to fame through a viral video. At the same time, the growth of Kjellberg's channel has been described as rapid by various sources; Douglas Holt of the Harvard Business Review commented that "the power of crowdculture propelled [Kjellberg] to global fame and influence in record time." Many close to Kjellberg have described him as "steadfastly loyal to his YouTube audience," with one calling him "a little spectrumy" in this regard.
By December 2011, Kjellberg's channel had around 60,000 subscribers, and on 9 May 2012, it reached 500,000 subscribers. Expressen noted that Kjellberg's channel accumulated 71 million total video views by March 2012, with 25 million coming in February 2012 alone. The channel reached 1 million subscribers in July, and 2 million subscribers in September.
Throughout 2012 and 2013, Kjellberg's channel was one of the fastest-growing on YouTube, in terms of subscribers gained. On 18 February, Kjellberg's channel reached 5 million subscribers, and in April, he was covered in The New York Times after surpassing 6 million subscribers. In July, he overtook Jenna Marbles to become the second-most-subscribed YouTube user, before reaching 10 million subscribers on 9 July. Kjellberg's subscriber count then surpassed that of the leading channel, Smosh, on 15 August. On 31 October, his channel became the first to reach 15 million subscribers. Shortly after, PewDiePie was surpassed by YouTube's Spotlight channel in subscribers. After jostling for the top position during the next month, PewDiePie's channel took firm hold of the most-subscribed title on 23 December. Ultimately, in 2013, the channel grew from 3.5 million to just under 19 million subscribers. By the end of the year, it was gaining a new subscriber every 1.037 seconds, with Billboard reporting that Kjellberg's channel gained more subscribers than any other in 2013. The year also proved to be successful for Kjellberg's viewership. In June, Tubefilter began a monthly listing of the most-viewed YouTube channels, which Kjellberg consistently topped, ranking #1 in June, July, August, October, and December of that year. Analyzing Tubefilter's data, The Guardian reported that Kjellberg's channel earned 1.3 billion video views in the second half of 2013. The channel had two of the ten most-viewed gaming videos in 2013: the sixth part of his Mad Father Let's Play was the third-most viewed of the year, earning 27 million views, and an entry in his Funny Gaming Montage series ranked as the eight-most viewed gaming video of 2013.
On 9 January 2014, the channel reached the 20 million subscriber milestone. During that year, Kjellberg's channel was the most-viewed in January, and then for seven consecutive months from March to September, according to Tubefilter. According to Social Blade, Kjellberg's channel surpassed emimusic on 29 December 2014, at over 7.2 billion views, to become the most-viewed channel on the website. According to Tubefilter and The Guardian, the channel amassed nearly 14 million new subscribers and around 4.1 billion video views in 2014; both figures were higher than any other user. The latter figure was a reported 81% increase from the channel's video views in 2013; the channel was the most viewed in that year, as well.
During July 2015, Kjellberg's videos were documented to receive over 300 million views per month. It eclipsed the 10 billion video view milestone on 6 September, becoming the first channel to do so. At that time, "A Funny Montage" (then-titled "Funny Montage #1") was Kjellberg's most-viewed video, with approximately 68.8 million views; a partial reason it accumulated many views was due to its status as the PewDiePie channel trailer.
In 2016, the channel experienced decreased viewership, which was similarly experienced by other content creators across the platform, due to changes in YouTube's algorithm. On 8 December, it reached 50 million subscribers, becoming the first YouTube channel to do so. Online campaigns to "subscribe to PewDiePie" during Kjellberg's feud with T-Series greatly assisted his channel's subscriber growth; his channel gained 6.62 million subscribers in December 2018 alone, compared to the 7 million subscribers gained in all of 2017. Renewed interest in Kjellberg's videos due to his subscriber competition with T-Series resulted in his channel earning over 500 million video views in December 2018, which was then the channel's single-highest monthly view count. After briefly gaining the title several times in early 2019, on 27 March, T-Series surpassed Kjellberg in subscribers to become the most-subscribed channel on YouTube. The day after "Congratulations" was uploaded, Kjellberg temporarily regained his lead over T-Series as the most subscribed channel.
In July 2019, in large part due to Kjellberg's Minecraft gameplay videos, his channel surged in video views. The Verge noted that it was Kjellberg's most successful month in years, in terms of viewership. Data from Social Blade shows the channel received 573 million video views, then a single-month record for the channel. His daily number of new subscribers also grew from 25,000 to 45,000 during that month. Kjellberg was the most-viewed creator of 2019, with his channel receiving over 4 billion views during the year.
Along with T-Series, PewDiePie was one of only two YouTube channels to receive all five tiers of YouTube Creator Awards: Silver, Gold, Diamond, Custom, and Red Diamond Creator. These awards are earned upon surpassing the 100,000; 1 million; 10 million; 50 million; and 100 million subscriber milestones, respectively. Kjellberg nicknamed his Custom Creator Award the Ruby Play Button, which he received in 2016. In 2019, Kjellberg's channel became the second overall, and the first run by an individual creator, to receive the Red Diamond Creator Award.
Heading into the 2020s, PewDiePie's subscriber growth began to stagnate, with his channel remaining static at 111 million subscribers that was reached on December 2021 before declining to 110 million by October 2024. Kjellberg's channel remained as one of the top ten most-subscribed until June 2025, with his channel's absence from the platform's short-form content scene resulting in it being outpaced by other creators. On August 30, 2026, PewDiePie's channel fell to 109 million subscribers.