Inside Conor McGregor's crazy weight transformations over the years

Conor McGregor has competed in three weights in the UFC and once put on 34lb in SIX MONTHS, but that’s nothing compared to when he ‘weighed 265lb’ in crazy change

  • Conor McGregor embraces changes in weight as part of his career ambitions
  • He has won titles in two UFC weights and joked that he weighed 265lb
  • The Irishman suffered a horrible injury in 2021 but from there pushed himself

Conor McGregor has had an iconic career in the UFC after rising through the ranks to eventually become the first fighter ever in the promotion to be champion in two weight classes at the same time. 

He has clambered through the featherweight, lightweight, and welterweight divisions, undergoing a remarkable transformation in the process. 

When he started out in UFC in 2013, he came in at 145lb in the featherweight division.

It would take him two-and-a-half years to reach title level at that weight, eventually beating Jose Aldo via first round knockout in December 2015.

But that wasn’t enough for McGregor, who had new horizons in his crosshairs. 


Conor McGregor’s physique has gone through extreme change during his time in the UFC 

Last year, McGregor his transformation over the years with his fans on Instagram  

Just eight months later, he crossed swords with Nate Diaz in the welterweight category at 170lb, beating the American by decision after five rounds in the Fight of the Night.

By the end of 2016, he had already dropped down to try his hand against Eddie Alvarez at 155lb to claim the lightweight title in a glittering performance. 

‘Notorious’ had made history, holding the featherweight and lightweight title at that same time with a victory in Nevada in the most-bought UFC pay-per-view event of all time. 

Yet that whirlwind year wasn’t the only time he showed remarkable fluctuation in weight. 

In July 2021, McGregor suffered a broken leg in the first round of his shock defeat to Dustin Poirier, but from there managed to put on 34lb (two-and-a-half stone) of muscle in six months, which experts said was almost impossible for most people to achieve. 

He claimed his first title in December 2015 when he beat Jose Aldo at featherweight

In August 2016, he added the welterweight crown to his collection by beating Nate Diaz

In 2022,McGregor joked that he weighed a whopping 265lb, which would put him at the top end of the UFC heavyweight spectrum 

The Irishman has not fought in UFC since then but UFC chief Dana White insists he is expected to return to the octagon ‘next year’. 

McGregor was gunning to take on Michael Chandler in December this year but failed to meet the USADA drug testing deadline to stage the fight this year. 

Photographs from this year show the incredible transformation he has undergone since starting out in UFC in 2013.  

In 2021, for his rapid weight gain, he was able to put on weight with plenty of hypertrophy training, free weights and six carefully-considered meals a day that are tailored to his body, McGregor’s personal trainer Alejandro Celdran told AS. 

He has been known to practice boxing, jiu-jtsu, wrestling, taekwondo, karate, and capoeira, a Brazilian martial art disguised as dance to build a varied programme and skill set, improving different aspects of his physique. 

‘Variety is the best way,’ he said. ‘For me, regimen doesn’t work.’ 

Besides that, the Irishman tends to keep on the quiet side with regards to his training routine. 

At one point last year, he even joked that he weight a whopping 265lb – 120lb more than when he won his first title.

McGregor has been putting friend Dillon Danis through his paces to prepare him for a showdown with Logan Paul 

It’s hard to take that seriously, considering that’s the upper limit of the UFC heavyweight category, but it goes to show how McGregor feels about his body and strength – which is supremely confident. 

In recent times, McGregor has been in New York with Dillon Danis to prepare for friend for an evening against Logan Paul. 

Their practice has even taken them to the famed, invite-only New York Athletic Club, which fields 22 teams for different sports.

On the Danis-Paul fight, McGregor said: ‘Dillon will win for sure. They’re already backtracking right now. They woke an animal. [I’ve known] Dillon years and I’ve trained with him many times. I’m guiding him, I’m gonna train him for this and I guarantee a win.’

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