Just like the sorcerer’s stone, his abs are rock-hard.

Daniel Radcliffe showed off his ripped muscles while stripping down to his tighty-whities in the “Miracle Workers” Season 4 finale Monday.

The “Harry Potter” star, 34, tore off his shirt with his bare hands to reveal his shredded six-pack abs in a dramatic scene from the TBS series’ “End Times” installment.

He then removed his pants and showed off his bulky calves and thunderous thighs in a tiny pair of underpants before going on a screaming rampage.

Viewers took to social media with hilarious reactions to Radcliffe’s toned tuchus and flexed physique.

“DANIEL RADCLIFFE LOOKING #CHUNKY! ????????,” one person tweeted.

“Harry Potter and the goblet of gainz,” a second person joked.

“See that’s what happens when you swap Quidditch for weights,” another fan chimed in.

“He has the same head just on an adult’s body,” a fourth wrote.

Others drew comparisons to Wolverine and Walter White, Bryan Cranston’s “Breaking Bad” character who famously cooked meth in his underwear.

“Sounds wild but the only man I can see taking that Wolverine torch from Hugh Jackman is Daniel Radcliffe ????,” a netizen said.

“Damn #DanielRadcliffe Walter White Wolverine is going to kill it,” another added.

This isn’t the first time Radcliffe has stripped down for an acting gig. He famously had a full-frontal nude scene when he starred in “Equus” on the West End and Broadway in the mid-2000s. He also had no problem going skinny-dipping with co-star Zoe Kazan in his 2013 film “The F Word.”

“Me and Zoe have both done lots and lots of nudity in our careers, so it wasn’t something that worried us,” Radcliffe told Page Six in 2014.

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While the actor is used to getting naked for the sake of art, he did admit to feeling self-conscious at times.

In 2015, he said he used to turn to alcohol to help him get through his insecurities.

“Any time I’d go out to dance, camera phones would come out,” he told Playboy that year. “That would make me very self-conscious, and what’s the easiest way to escape being self-conscious? Alcohol is a quick way of doing that. So it was related in that way.”

This April, news broke that Radcliffe became a father after he and his girlfriend, Erin Darke, welcomed a baby.

The couple, who rarely step out in public together, have been dating since meeting on the “Kill Your Darlings” set in 2012.