Super-strength.

“How strong is Superman?” is one of the most asked questions about him, and most of the answers online quote numbers with no source. The honest answer is that his strength has always depended on the era, the writer and how much sunlight he has stored.

How strong is Superman?

Superman’s strength is not fixed. Here’s how it has changed across his history, with the stories that show it:

In short, Superman started as a man who could lift a car, peaked as someone who could move planets, and has settled as “as strong as the story needs” since the 1980s.

Where does Superman’s strength come from?

Superman’s strength comes from Earth’s yellow sun. His Kryptonian cells absorb solar radiation and store it like a battery, which powers his muscles. In post-Crisis comics, a bio-electric aura close to his skin also helps explain how he can lift a huge object without it breaking apart under its own weight. The aura was introduced in John Byrne’s post-Crisis reboot (1986). The related idea of “tactile telekinesis” is older: the Kleefeld on Comics timeline dates it to November 1980.

What are the limits of Superman’s strength?

Superman’s strength fades under a red sun, near green kryptonite and when his stored sunlight runs low (solar depletion). Magic ignores his toughness entirely. And opponents with comparable power, such as Doomsday, who killed him in Superman (vol. 2) #75 (January 1993), and Darkseid, can match or beat him. See Superman’s weaknesses for the full list.

The “200 quintillion tons” and “2 billion tons” claims

Two numbers get repeated everywhere:

• “2 billion tons”: widely quoted by FAQ sites with no comic source. We couldn’t find one, so we don’t use it.
• “200 quintillion tons”: said to be Superman holding up that weight with one hand during a strength test in All-Star Superman (Grant Morrison and Frank Quitely, 2005–08), while he’s supercharged by the sun. It’s widely quoted but not yet verified: no reliable source ties the figure to a specific issue, and All-Star Superman sits outside main continuity anyway. What we can confirm is that All-Star Superman #3 has him arm-wrestling the strongmen Samson and Atlas.

For the feats we can cite, from moving mountains to dragging a solar system, see his greatest cited feats.

Super-strength on screen

• Christopher Reeve (1978–87) lifts and throws huge objects across four films.
• Brandon Routh lifts a landmass laced with kryptonite into space in Superman Returns (2006).
• David Corenswet fights a giant monster in Metropolis in Superman (2025), trying to take it alive before Mister Terrific kills it. Reports of him holding up a falling building are still to be confirmed.

Superman’s strength works hand in hand with his flight: most of his big lifting feats happen in mid-air. For every other power, see the full list of Superman’s powers, and for actors’ takes on the role, see every Superman actor.

Superman vs Goku, Hulk and Thor

“Who would win?” debates are fun, but they’re opinion, not canon, and the answer depends entirely on which version of each character you pick. We only list fights that have actually been published, with their results, on Can Superman…?.