What Would You Weigh on Other Planets?

Your mass stays the same wherever you go in the universe — but your weight (the force of gravity pulling on that mass) changes dramatically depending on which world you're standing on. Enter your weight below to see what you'd weigh across the solar system.

Why Does Gravity Differ?

The surface gravity of any world depends on two things: its mass and its radius. Jupiter is 318 times more massive than Earth but also 11 times wider, so its surface gravity (at the cloud tops) is "only" 2.5 times Earth's. Mercury and Mars are roughly equal in surface gravity (about 38% of Earth's) despite Mercury being much smaller — Mercury is denser, packing its mass into a smaller radius. The Sun's surface gravity is 28 times Earth's, while a neutron star's is over 100 billion times Earth's.

Practical Implications

• The Moon (16% Earth gravity): Apollo astronauts could leap several meters easily. Bones and muscles weaken without exercise — a major challenge for long-duration crews.
• Mars (38% Earth gravity): Future colonists will likely need consistent exercise to maintain bone density and cardiovascular health, but tasks like construction become much easier.
• Jupiter (253% Earth gravity): Jupiter has no solid surface — these values describe the cloud-top level. Standing there, a 70 kg person would weigh as much as a 177 kg person on Earth.