Who Is KSI? Age, Biography and Wiki
KSI, also known as Olajide William Olatunji, was born on June 19, 1993, making him 31 years old in 2025. This English personality has made a name for himself in several arenas—boxing, music, and social media. Renowned for his energetic persona, KSI began his journey on YouTube, where he initially gained fame for gaming content before branching out into music and boxing. His rise to prominence has been marked by a blend of talent, dedication, and strategic moves in various entertainment fields.
| Occupation | Musicians |
|---|---|
| Date of Birth | June 19, 1993 |
| Age | 32 Years |
| Birth Place | London, England |
| Horoscope | Gemini |
| Country | England |
Popularity
KSI's Popularity over time
Height, Weight & Measurements
KSI stands at an impressive 6 feet (183 cm) tall and weighs approximately 200 lbs (90 kg). His athletic build is a testament to his boxing career and rigorous training regime. As of 2025, KSI’s body stats reflect both his commitment to fitness and his status as a professional athlete, demonstrating strength, agility, and endurance crucial for his boxing matches.
Creating hip-hop music as early as 2011, he first achieved commercial success with "Lamborghini" (featuring P Money) in 2015. His debut EP, Keep Up (2016), topped the UK R&B Albums Chart. He released his debut studio album, Dissimulation, in 2020, which peaked at number two on the UK Albums Chart.
His second studio album, All Over the Place (2021), debuted at number one and was certified platinum by the BPI; its lead singles "Don't Play" (with Anne-Marie and Digital Farm Animals) and "Holiday" both debuted at number two on the UK Singles Chart and were nominated for Song of the Year at the Brit Awards.
He has achieved fourteen top 40 singles in the United Kingdom, with seven peaking in the top 10. He received the Brit Billion Award in 2024, for amassing over one billion music streams in the United Kingdom.
He also starred in the direct-to-video comedy film Laid in America (2016), and has been the subject of multiple documentaries, including Amazon Prime Video's In Real Life (2023).
Family, Dating & Relationship Status
As a prominent public figure, KSI's relationships often attract media attention. In 2025, he is rumored to be dating Influencer/Model [insert name here]—the couple reportedly began seeing each other in late 2024. KSI has often been private about his romantic life, although friendships and relationships with fellow influencers frequently make headlines.
Details about his family are limited, but KSI has spoken about his Nigerian heritage and the influence of his family on his upbringing and career, particularly his father and brother, who have occasionally appeared in his videos.
Born in London to parents of Yoruba heritage and raised in Watford, KSI was privately educated at Berkhamsted School. He registered his main YouTube channel KSI—then known as KSIOlajidebt—in 2009 and built a following through his commentary videos of the FIFA video game series. His content later diversified to include vlogs and comedic skits.
In 2019, he was ranked second by The Sunday Times in its list of most influential online creators in the United Kingdom. In 2021, he was listed in the Europe Entertainment category of Forbes 30 Under 30; he was later ranked by Forbes as the second-top creator of 2023.
As of January 2025, he has over 44 million subscribers and 14 billion video views across his three active YouTube channels.
Net Worth and Salary
As of 2025, KSI’s estimated net worth stands at around $25 million. His earnings stem from various sources, including his YouTube channels, music sales, merchandise, and boxing matches. His fight against fellow YouTuber Logan Paul and subsequent boxing ventures have significantly boosted his income. Additionally, KSI's savvy investments in businesses such as his own music label and endorsements play a crucial role in bolstering his finances.
On 28 July, it was announced that KSI and Logan Paul would both headline MF & DAZN: X Series 10 – The Prime Card on 14 October at Manchester Arena in Manchester, England. On 30 July, it was announced that KSI would in fact be facing Tommy Fury. Fury defeated KSI via a majority decision.
On 15 October, the results were changed to a unanimous decision victory for Fury due to judge Rafael Ramos, who had previously scored the bout 57-57 on the scorecard, which was mathematically incorrect. The event generated 1,300,000 pay-per-view buys, making it one of the largest boxing events in 2023.
Career, Business, and Investments
KSI's career has epitomized the modern influencer landscape. He initially gained attention in the gaming niche, but his transition into boxing and music has been extraordinary. After achieving considerable success in YouTube, including millions of subscribers and billions of views, KSI released multiple singles and albums, showcasing his musical talent.
In boxing, his high-profile matches against other YouTube personalities have brought him acclaim as an athlete. Beyond entertainment, KSI has made investments in various startups and has his merchandise line, “KSI Merch.” His ability to adapt and diversify his career path reflects his business acumen and understanding of the digital landscape.
The song peaked at number 10 on the UK Singles Chart and it has been certified silver by the British Phonographic Industry (BPI) for sales of 200,000 units in the country.
On 15 December KSI, Miniminter, TBJZL, and Zerkaa released a Christmas themed single titled "The Gift" under the Sidemen banner featuring S-X which charted at number 77 in the UK.
A further three singles preceded the album: "Wake Up Call", featuring Trippie Redd, which debuted at number 11 on the UK Singles Chart; "Poppin", featuring Lil Pump and Smokepurpp, which charted at number 43 in the UK; and "Houdini", featuring Swarmz and Tion Wayne, which debuted at number six on the UK Singles Chart and received a silver certifica
tion from the BPI.
Social Network
KSI is a dominant force across social media platforms. As of 2025, he boasts over 25 million subscribers on YouTube, with millions more following him on Instagram, Twitter, and TikTok, where he shares snippets of his personal life, fitness journey, and glimpses into his career. His engagement with fans is noteworthy, as he often interacts through live streams and Q&A sessions, maintaining a strong connection with his audience.
Olajide Olayinka Williams "JJ" Olatunji (born 19 June 1993), better known by his online alias KSI, or JJ is an English influencer, professional boxer, and musician. He is a co-founding member of YouTube group the Sidemen, the CEO of Misfits Boxing, and the co-owner of several businesses, including Prime Hydration and Lunchly.
Education
KSI attended Bexleyheath Academy and later pursued higher education at the University of Watford, where he studied business. Although he did not complete his degree due to his flourishing career on YouTube, KSI’s formal education provided him with a solid foundation in business principles, which he has since applied to his various entrepreneurial ventures.
