KSI is one of the most well-known internet stars in the world. Starting out as a teenager making FIFA videos on YouTube, he has now become a successful musician, boxer, businessman, and influencer. With millions of followers and fans across the globe, KSI has built a powerful brand that stretches far beyond YouTube.
Over the years, he has earned money from many different sources—YouTube ads, music sales, boxing matches, merchandise, and even co-owning the global drink brand Prime. As of now, KSI’s net worth is estimated to be around £15 million.
In this article, we’ll take a closer look at who KSI is, how he made his fortune, and what makes him such a unique and successful personality in the digital age.
Who is KSI?
KSI, whose real name is Olajide William Olatunji, is a popular British YouTuber, rapper, actor, and professional boxer.
He started his YouTube journey in June 2009 and is well known as a member of the group Sidemen. His younger brother, Deji, is also a YouTuber and is known online as ComedyShortsGamer.
KSI has appeared in two films—Laid in America, where he acted alongside Caspar Lee, and a documentary called Can’t Lose, which follows his life and first boxing match against Logan Paul.
Born in Watford, KSI has also made a name for himself in music. His most popular track, Lamborghini, reached number 30 on the UK music charts.
What is KSI’s net worth?
KSI is not just a successful YouTuber—he also makes a lot of money from other sources. He earns from selling merchandise, which he shares with the other six members of the Sidemen. He also makes money from his music and brand deals. Today, KSI’s net worth is estimated to be around £15 million.
How Many YouTube Subscribers Does He Have?
KSI is one of the biggest YouTubers in the world, with around 25 million subscribers and over six billion views on his channel.
He first gained attention by posting videos of himself playing FIFA. Over time, he started creating comedy skits, real-life football videos, and Q&A sessions with fans.
KSI’s Rise Beyond YouTube
KSI has grown far beyond his YouTube roots and become a multi-talented entertainer and entrepreneur. As part of the Sidemen, he’s helped build one of the most influential content groups in the UK. Together, they’ve launched a variety of successful ventures, including their own fast food brand, Sides, and the popular sports drink Prime, which KSI co-owns with fellow YouTuber Logan Paul.
In music, KSI has released multiple albums and worked with well-known artists like Craig David, Lil Wayne, Anne-Marie, and Rick Ross. His albums have reached top spots on the UK charts, proving he’s not just a YouTube personality, but a serious figure in the music industry.
KSI has also made a mark in boxing. His matches—especially against Logan Paul—drew massive global attention and helped bring influencer boxing into the mainstream. He later co-founded Misfits Boxing, a promotion company focused on crossover boxing events, further cementing his influence in the sport.
Through hard work and smart business decisions, KSI has built a powerful personal brand. From entertainment and music to sports and business, he continues to evolve and inspire millions of fans around the world.
How Did KSI Become Rich
KSI became rich by turning his online fame into multiple income streams. He first gained popularity on YouTube by posting gaming videos, especially FIFA, and grew a huge fanbase. As his channel expanded, so did his opportunities.
He started earning from YouTube ads, sponsorships, and merchandise sales with the Sidemen. He then moved into music, releasing hit songs and albums that brought in royalties and concert earnings. His boxing matches, including high-profile bouts against Logan Paul, brought millions in pay-per-view revenue.
KSI also co-founded the energy drink Prime, which became a global success. With smart business moves and hard work, he built a net worth estimated at £15 million.
When Did KSI Reach 1 Million?
KSI reached 1 million subscribers on his main YouTube channel, KSIOlajideBT, on December 30, 2012 . This milestone came just over three years after he launched the channel in July 2009.
Initially, he gained popularity by posting FIFA gameplay videos, which helped him build a dedicated fanbase. As his content evolved to include comedy sketches, vlogs, and collaborations, his subscriber count continued to grow rapidly.
Did KSI Leave The Sidemen?
KSI, whose real name is Olajide William Olatunji, remains an active and founding member of the Sidemen. However, in August 2017, he announced his departure from the group, citing personal conflicts, particularly with fellow member Ethan Payne (Behzinga). This led to a series of diss tracks exchanged between KSI and other Sidemen members, sparking widespread speculation about the authenticity of the feud. Later that year, KSI clarified that the drama was a mix of genuine tension and orchestrated entertainment.
Despite this brief separation, KSI rejoined the Sidemen and has continued to be an integral part of the group. He actively participates in their content, including their weekly “Sidemen Sunday” videos and various collaborative projects. The Sidemen have since expanded their brand, launching ventures like the fast-food chain Sides, the alcoholic beverage XIX Vodka, and the subscription service Side+.
