KSI Biography, Age, Youtube, Relationship, Education, Reddit, Net Worth


Olajide Olayinka Williams “JJ” Olatunji also known as KSI is from the United Kingdom. He was born in Watford, England on June 19, 1993, and now in 2023, KSI age (jj olatunji age) is 29 years old.

By Profession, he is a Youtuber, Author, Gamer, Actor, Rapper, and Professional Boxer with the huge number of followers on different Social Media Platforms.

On Tik Tok, he have 8.6 million+ Followers with 64.6 Million+ Likes/Hearts.

He is active on Instagram. On Instagram, he have 11 million+ followers and still increasing. He have a Facebook account too with 5 million+ fans. and on Twitter, he have 7.4 million+ followers.

He have 2 Youtube accounts too with 23.7 Million subscribers

Full NameOlajide Olayinka Williams “JJ” Olatunji
Famous NameKSI
Instagram Username@ksi
Instagram Followers11 million+ followers
Tik Tok Username@ksi
Tik Tok Followers8.6 million+ Followers
Likes/Hearts64.6 Million+ Likes/Hearts
Twitter Username@KSI
Twitter Followers7.4 million+ followers
Facebook Followers5 million+ fans
First Youtube ChannelKSIOlajideBT
Youtube Subscribers23.7 Million+
Second Youtube ChannelJJ Olatunji
Youtube Subscribers14.7 Million subscribers
ProfessionYoutuber, Author, Gamer, Actor, Rapper, and Boxer

Professional Info

Date Of Birth (DOB)June 19, 1993
Age (in 2023)29 years old
Birth PlaceWatford, England
Home TownWatford, England
Zodiac SignGemini
SchoolBerkhamsted School
DegreeDrop out
CollegeDrop out
Martial StatsUnmarried
HobbiesGames and Sports


  • Youtube is the social media platform where he is active most.
  • He have two channels on Youtube.
  • The first channel name is on her famous name KSIOlajideBT and another channel name is JJ Olatunji.
  • On his first channel, he have 23.7 Million subscribers and on the other channels, he have 14.7 Million subscribers.
  • First talk about his prime main channel with 23.7 million subscribers.
  • On Jul 25, 2009, he created this channel with the name  KSIOlajideBT which is now changed to his famous name.
  • On Feb 1, 2010, he uploaded his 1st video with the title Modern Warfare 2 Care Package Kill.
  • That video have 1.1 million views till date and still increasing.
  • On his main channel, he posts gaming videos and his commentary adds more fun to this.
  • In the initial days he was not getting enough views but the day he starts uploading Fifa video games that boost his view count.
  • And on Jan 27, 2011, he create his second channel, and on Aug 31, 2011, he uploaded his first video with the title Black Ops | One in the Chamber.
  • That video have 903 k views till date and still increasing.
  • This channel he uploads funny content mostly are reaction videos and then he starts uploading vlogs too and their subscribers love it.
  • He is also a co-founder and member of channel Sideman which is a British YouTube group.
  • But On 4 August 2017, by tweet, he inform us that he is leaving Sideman because of conflicts with a fellow member, Ethan Payne.
  • Later he uploaded a diss track too which was responded by other members too.
  • On 24 September 2015, he published a 208 pages book with the name I Am a Bellend.
  • First, his book was released in the UK then five days later it was available in the United States too.
  • In 2016, he publish his second book Sidemen: The Book, and this book 26,436 copies were sold within three days.
  • He is also the author of the book How to Be a Youtube Kingpin and Dominate the Internet.
  • On 23 March 2015, he uploaded his first music video with the title Lamborghini where he featured with P Money.
  • Also, he was part of the 2016 movie Laid in America where he plays the character of Duncan.
  • Now took singing as professionally he signed in 2019 he signed RBC Records.
  • And in 2020 he released his album Dissimulation. which was one of the best music albums.

KSI Songs & Music

  • In 2017, he publish a music video with the title 64 Impala, and the album name was Space.
  • The same year he uploaded another music video with the title Adam’s Apple.
  • In 2018, he uploaded the song, Ares.
  • He was part of the New Age album and the songs which he was part were Beerus, Bow Down, Champagne, and Clean.
  • Album Dissimulation is one of his best albums in which he was part of songs like Domain, Down Like That, Houdini, How It Feel, and Killa Killa.
  • And in 2020, he was part of the music video Lighter with Nathan Dawe.
  • On Aug 6, 2021, he uploaded her music video with the title name KSI x Lil Wayne – Lose [Official Music Video].

KSI Boxing Career

KSI vs. Joe Weller

  • Joe Weller is a British Youtuber. There rivery between KSI and Joe Weller was begin at the end of 2017.
  • They have a lot of conflict on Twitter.
  • Both uploaded diss tracks on each other too.
  • And at last, on 3 February 2018, they decided an amateur boxing match at Copper Box Arena, London to settle all this.
  • This match goes for 3 rounds and JJ won this match by technical knockout.
  • After the match, he shows respect towards Joe Weller by saying way harder, way tougher than I thought.
  • And call out American YouTuber Logan Paul, his brother Jake Paul, and retired footballer Rio Ferdinand for a fight.

KSI vs. Logan Paul I

  • Date decided for KSI Vs. Logan Paul I was 24 February 2018 in a white-collar boxing amateur boxing match.
  • The Independent, announce this as one of the biggest white-collar boxing matches in history.
  • And Radio Times declare this the biggest amateur boxing match in history.
  • 21,000 tickets sold out for Manchester Arena and revenue was over £2.7 million.
  • 2.25 million people watch this match live and on Twitch 1.2 million watch illegal streams.
  • This match was won by JJ as on this match two-judge scored 57–57 and the third judge scoring was 58–57 in favor of KSI.

KSI vs. Logan Paul II

  • After the first match, Logan Paul ask for a rematch and JJ accepted the challenge.
  • On 9 November 2019, they were facing one more time on the ring in Staples Center, Los Angeles.
  • But this was going to be a professional fight without the use of headgear.
  • For this match, JJ was trained by professional boxer Jeff Mayweather, Viddal Riley, and the uncle of Floyd Mayweather JR..
  • This match goes for six three-minute rounds and again JJ was announced as the winner by split decision.
  • After this match, Logan Paul wanted another match but JJ respond It’s done … I’m on to the next thing.

Physical Stats

HeightIn Feet Inches: 5’10”
In Meter: 1.m
In Centimeter: 124cm
WeightIn Kilogram: 42 KG
In Pounds: 92 lbs
Body MeasurementUpdate Soon
Body TypeSlim
Sexual OrientationStraight
Skin ColorBlack
Hair ColorBlack
Eye ColorBrown


FatherJide Olatunji
MotherYinka Atinuke Olatunji
BrotherOladeji Daniel “Deji” Olatunji (Deji)

KSI Girlfriend And Relationship

  • He keeps his relationship private not much talk about her in public.
  • He confirms that he is single now.
  • But he was in a relationship with Seana Cuthbert.
  • He knows Seana Cuthbert from High School but that relationship works for two years.

Some Unknown Facts

  • His father Jide Olatunji was from Nigeria and his mother was Yinka Atinuke Olatunji was from London.
  • Oladeji Daniel “Deji” Olatunji is his younger brother and he is YouTuber by profession.
  • He was born and raised in Watford, England
  • He is co-owner of XIX Vodka and a restaurant chain which is known as Sides.
  • Also, he is co-owner of Prime Hydration too.
  • He was so much passion about youtube even he didn’t complete school.
  • He dropped out from sixth class so that he can give full time to youtube.
  • His family was not happy with the decision but when he saw his work and achievements they support him and also featured him in some of his videos too.
  • Also, in an interview, he said once her teacher asked after his dropout how much he earns from Youtube to which he replied around £1,500 a month.
  • Which is much more than his teacher’s monthly salary.,
  • He does lot of charity work too. In 2015, he donated $10,000 in the youtube live stream.
  • There are not many updates on his Net Worth.