The Atom possesses the power to alter his size down to the subatomic level while retaining his natural strength level. This is accomplished by using the remnants of a white-dwarf star made into a belt buckle worn with his costume. Originally, he had to manipulate his abilities via the belt, and later with hand movements, before eventually syncing directly with his brain via mental commands. The Atom is one of the few heroes in the DC Universe that has 100% control over his body on the molecular level (Plastic Man being another), thus making him exponentially more powerful than he is often portrayed; he is limited only by his application of his powers. Some of the applications he has demonstrated include reducing his mass to glide through the air (simulating flight, like Wonder Woman) and increasing his mass to punch through concrete. He also demonstrated the ability to make his costume appear and disappear at will by shifting its atoms between this dimension and another.