Enter your weight. Find out what you'd weigh on Jupiter, the Moon, or a neutron star.
Weight equals mass multiplied by surface gravity. Earth's gravity is 9.8 m/s². Jupiter's is 24.8 — about 2.5 times stronger. A neutron star's surface gravity is roughly 2×10¹² m/s², which means a 70 kg human would weigh about 140 billion kilograms. The gravitational force would tear your body apart long before you touched the surface.
These calculations use surface gravity data from NASA's planetary fact sheets. The Moon's gravity is 1.62 m/s², Mars is 3.71, and Io (Jupiter's volcanic moon) is 1.80. If you could stand on the surface of a neutron star, you would be crushed into a layer of material about 1 millimeter thick — a pancake made of atoms.
The reason gravity varies so much has to do with both mass and radius. A planet like Jupiter is huge but less dense than Earth. A neutron star is tiny — about 20 km across — but contains more mass than the Sun. That concentration of mass in a small radius is what creates the insane gravity.
Weight isn't the same as mass. Your mass stays the same no matter where you are — it's the amount of stuff you're made of. Weight is the force of gravity pulling on that mass. On Earth, gravity pulls you down at 9.8 m/s². That's what your bathroom scale measures.
On the Moon, gravity is 1/6th of Earth's. That's why astronauts bounced around like they were on a trampoline. If you weigh 60 kg on Earth, you'd weigh 10 kg on the Moon. On Mars, you'd weigh about 23 kg. On Jupiter — which has no solid surface, by the way — you'd weigh about 152 kg at the cloud tops.
Then there's the neutron star case. A neutron star is what's left when a massive star collapses. About 1.4 times the Sun's mass, packed into a sphere about 20 kilometers across. The surface gravity is so intense that if you could stand on it, you'd weigh about 100 billion times your Earth weight. You wouldn't stand for long — you'd be crushed into a thin layer of atoms about 1 nanometer thick. The universe is beautiful, but it's not gentle.
Jupiter has 318 times Earth's mass, so its surface gravity is 2.5x stronger. Weight = mass × gravity, so you feel heavier.
No. Jupiter is a gas giant with no solid surface. The "surface gravity" is measured at the cloud tops.
A neutron star has about 1.4 solar masses packed into a sphere ~20 km wide. A teaspoon of its material weighs ~4 billion tons.
Jupiter is a gas giant — it has no solid surface. What we call the 'surface gravity' is measured at the cloud tops, where the atmospheric pressure is about the same as Earth's. As you go deeper, the pressure increases until hydrogen becomes a liquid metal.
On Earth, about 1g. On the Sun's surface, you'd weigh 28x more but you'd also burn. On a white dwarf, you'd weigh ~130,000x Earth gravity. You would not survive. The highest gravity you could 'stand' on without being crushed is probably about 5g — anything more and your bones can't support you.