KSI is an English YouTuber, rapper, entrepreneur, and professional boxer. The online celebrity only recently started a career in professional boxing and has received considerable recognition.
This article details KSI’s net worth, salary, earnings, age, height, and other personal information.
KSI’s Net Worth Details
KSI’s net worth is estimated to be $27 million as of 2025. Most of the star’s income has been generated from his successful YouTube and music career. Additionally, he owns properties worth over £10 million all around England.
In addition to real estate, KSI boasts an outstanding automobile collection that includes a Lamborghini Aventador, a Rolls-Royce Wraith, a Porsche Cayenne, and a Porsche 718 Boxster.
Career Earnings
His main YouTube channel, “KSIOlajidebt,” has 24 million subscribers.
The channel is worth $4.5 million. Every video posted in it generates around $250,000 on average.
His music-related channel, KSI, has over 24 million subscribers and a net worth of around $1.1 million. The player earns around $5 million yearly from his YouTube channels.
Additionally, he is a successful rapper. KSI has released over 21 singles, 2 studio albums, and 4 EPs. He has also appeared in 11 TV episodes, 12 web series, and 3 films.
So, it is safe to assume that this successful music and TV career helps him make a healthy amount of money yearly.
KSI’s recent debut in boxing has boosted his earnings significantly. With the “KSI vs Logan Paul II,” he made his professional debut in boxing.
The bout earned him a guaranteed purse of $900,000. His two fights against Logan Paul have generated over $13 million in PPV revenue.
Payout details of his upcoming fight against another English rapper “Swarmz” were released recently.
Below is the breakdown of payout details –
| Boxer | Guaranteed Purse | PPV Share | Total Payout |
| KSI | $500,000 | 60% | $1 million |
| Swarmz | $350,000 | 40% | $500,000 |
Endorsements
A significant portion of KSI’s income comes from sponsorship. A YouTuber earns $700k annually from sponsorship via his channel.
He also has endorsement deals with the energy drink company G-Fuel and the famous UK-based fitness apparel brand Gymshark.
Additionally, he is a successful businessman. In 2018, he became the director of three UK-based companies and invested $2.2 million.
In 2021, KSI launched his music record label, “The Online Takeover.” Furthermore, he launched a new boxing promotional company titled “Misfits Boxing” the same year.
At the beginning of 2022, the star partnered with another YouTuber, Logan Paul, to co-found a new energy drink company called Prime Hydration.
Recently, Arsenal announced a new partnership with this company.
KSI is also a co-founder and shareholder of the Sidemen restaurant chain “Sides,” their clothing lineup, and vodka brand “XIX Vodka.”
About KSI
| Full Name | Olajide Olayinka Williams Olatunji |
| Nickname | KSI, JJ, The Nightmare |
| Profession | YouTuber, Rapper, Boxer, Actor |
| Boxing Stance | Orthodox |
| Weight Division | Cruiserweight |
| Date of Birth | June 19, 1993 |
| Place of Birth | Watford, Hertfordshire, England |
| Nationality | English |
| YouTube Debut | 2008 |
| Professional Boxing Debut | 2019 |
| Height | 6 ft 0 in (183 cm) |
| Weight | 199.4lbs (90.4 kg) |
| Age | 29 |
| Net Worth | $27 million |
| Marital Status | Unmarried |
| Father’s Name | Jide Adamulla |
| Mother’s Name | Yinka Atinuke |
| Annual Salary | $5 million |
| YouTube Channel | @KSIOlajidebtHD |
| Twitter Handle | @KSI |
| Instagram Handle | @ksi |
KSI was born in 1993 in Hertfordshire, England. He is the son of Jide Adamulla and Yinka Atinuke. His younger brother, Deji, is also a renowned YouTuber.
YouTube & Music Career
KSI started his career on YouTube in his early teenage years. Under the name “KSIOlajideBT,” he uploaded gaming-related content.
His popular content then mainly consisted of commentary on FIFA video games.
After 2012, the focus of his videos shifted to a more vlog tone. However, his YouTube career wasn’t without controversies.
He received the official diamond play button after his main channel reached 10 million subscribers in 2016.
In 2013, KSI became part of the British YouTube sub-network Sideman. The group mainly produced comedic, sketch, challenge, and video game commentary videos.
Later, in 2017, the YouTuber left the group due to an internal dispute.
KSI had been making comedy-rap songs for his channel since early 2011, but he didn’t focus on the music side of his career until 2015.
In 2015, he released his debut single, “Lamborghini.” It ranked 30th on the UK Singles Chart.
Following this, he started focusing more on his music career and releasing independently in 2017.
Since then, the English star has released two BPI gold-certified studio albums, 22 singles, and been featured in 10 singles.
Boxing Career
Surprisingly, KSI and another British YouTuber, Joe Weller’s online clash shifted to an amateur boxing match in 2018. KSI won the fight via a third-round TKO.
Following the match, he called out two popular American YouTubers and his long-term rivals, the Paul brothers.
Soon, the callout transpired into a white-collar amateur boxing match with Logan Paul. The game, dubbed “KSI vs Paul I,” ended with the judges scoring in favor of KSI.
After one and a half years, a rematch between KSI and Paul was held. This event was both boxers’ professional debut match.
Eddie Hearn promoted the match at Staples Center in Los Angeles. KSI again won the match by a split decision.
In June of 2021, KSI announced his partnership with Wasserman Promotions and the news of a boxing promotional company titled “Misfits Boxing.”
Along with the new announcement, a bout between KSI and Alex Wassabi was announced, too. Later, his opponent was replaced with Brandon “Swarmz” Scott.
On 16 August, a new announcement came.
According to this, KSI will fight a second opponent the same night. The second opponent was revealed to be the Mexican professional boxer Luis Alcaraz Pineda.
Girlfriend
KSI has managed to keep his current relationship private despite his significant public presence as a YouTuber, boxer, and musical artist.
He has a girlfriend but has kept her identity and relationship details away from the public eye.
KSI and his girlfriend reportedly split back in 2021 but later reconciled. He has made it clear in public appearances, such as on Good Morning Britain, that he prefers to keep his personal life, including his relationship, private.
Although there were rumors about Ann Marie being KSI’s girlfriend following their collaboration on a song and several public appearances, KSI confirmed they were not romantically involved.
His girlfriend’s identity was not revealed in his Amazon Prime documentary, although she appeared in short clips.
Boxing Stats
Professional Boxing Record
| No. | Result | Record | Opponent | Type | Round, time | Date |
| 3 | — | — | Luis Alcaraz Pineda | — | – /(6) | 27-Aug-22 |
| 2 | — | — | Swarmz | — | – /(6) | 27-Aug-22 |
| 1 | Win | 1–0 | Logan Paul | SD | 6 | 9-Nov-19 |
Amateur Boxing Record
| No. | Result | Record | Opponent | Type | Round, time | Date |
| 2 | Draw | 1–0–1 | Logan Paul | MD | 6 | 25-Aug-18 |
| 1 | Win | 1–0 | Joe Weller | TKO | 3 (6) | 3-Feb-18 |
FAQs
1. Who is KSI and what does KSI stand for?
Olajide Olayinka Williams “JJ” Olatunji, known as KSI, is an English YouTuber, boxer, musician, and entrepreneur born on June 19, 1993. KSI stands for Knowledge, Strength, Integrity, which he has tattooed on his body. He began his YouTube career in 2009 with FIFA gaming videos and has since built a multi-faceted entertainment empire.
2. What is KSI’s net worth in 2025?
KSI’s net worth is estimated between $100 million and $150 million. This wealth comes from multiple income streams including YouTube revenue (approximately $2.4-2.9 million monthly), boxing matches, music royalties, and various business ventures. Between September 2022 and 2023 alone, he earned approximately $25 million.
3. What are KSI’s main business ventures?
KSI’s business portfolio includes co-founding Prime Hydration with former boxing opponent Logan Paul, which reportedly achieved $1.2 billion in sales. He’s also CEO of Misfits Boxing, co-owner of Lunchly, and has three YouTube channels with combined 44 million subscribers and 14 billion views. His diversified approach to business has built his substantial wealth.
4. What is KSI’s boxing record?
KSI’s professional boxing record stands at 4 wins, 1 loss, and 1 no contest. He has defeated Joe Weller, Logan Paul, Swarmz, Luis Pineda, and Joe Fournier, while losing to Tommy Fury in October 2023 by unanimous decision. His boxing nickname is “The Nightmare” and he competes in the cruiserweight division.
5. What are KSI’s musical achievements?
KSI started creating hip-hop music in 2011 and achieved commercial success with “Lamborghini” featuring P Money. His debut studio album “Dissimulation” (2020) reached #2 on the UK Albums Chart, while his second album “All Over The Place” (2021) debuted at #1 and earned platinum certification from the BPI.
