Weight on Other Planets Calculator
Find out how much you would weigh on the Moon, Mars, Jupiter, and every other body in the solar system — your weight scaled by each world's gravity.
Como usar esta calculadora
- 1Enter your weight on Earth in pounds, kilograms, or stone.
- 2Choose the body you want to compare with.
- 3Read your weight there, then scan the table for every other world at once.
Como funciona
Weight and gravity
weight = mass × surface gravity on another body: W = W_earth × (g_body ÷ g_earth) g_earth = 9.80665 m/s² mass is the same everywhere; only the force changes
Weight is a force: your mass multiplied by the local gravitational acceleration. Because your mass is constant, your weight on any world is simply your Earth weight scaled by that world's surface gravity relative to Earth's. The Moon pulls with about one sixth of Earth's gravity, so you weigh a sixth as much; Jupiter pulls two and a half times harder, so you weigh more than twice as much.
Exemplo resolvido
Someone who weighs 160 lb on Earth would weigh about 26.4 lb on the Moon (gravity 1.62 m/s², or 0.165× Earth's), 60.5 lb on Mars, and 404 lb at Jupiter's cloud tops — while their mass of roughly 72.6 kg never changes.
Weight on Other Planets Calculator: o guia completo
Mass versus weight — the distinction that makes this work
Mass is how much matter you are made of, measured in kilograms, and it does not change no matter where you go. Weight is the force gravity exerts on that mass, measured in newtons (or, informally, in the pounds and kilograms a scale reads). A bathroom scale measures weight and labels it as mass, which works on Earth because everyone shares the same gravity — but it is why the same scale would read differently on the Moon.
This is the whole basis of the calculation. Since weight is mass times gravity and your mass is fixed, moving to another world just multiplies your weight by the ratio of the two surface gravities. Nothing about your body changes; the planet under your feet does.
Why the gas giants are surprising
Jupiter is over 300 times Earth's mass, so you might expect to weigh hundreds of times more there. You do not — its surface gravity is only about 2.5 times Earth's. The reason is distance: Jupiter is also enormous, and gravity falls off with the square of the distance from a body's centre. Standing on Jupiter's cloud tops puts you far from most of its mass, which cancels much of the extra pull.
Saturn is the strangest case. Despite being 95 times Earth's mass, its surface gravity is almost identical to Earth's, because it is so large and so low in density — Saturn would float in a big enough bath of water. There is also no surface to stand on: the gas giants have no solid ground, so these figures describe the gravity at the altitude where the atmospheric pressure equals Earth's sea level.
What lower gravity actually feels like
On the Moon, at one sixth of Earth's gravity, the Apollo astronauts found walking clumsy and switched to a loping, two-footed hop. You could jump roughly six times higher and lift six times the weight, but your body's inertia — set by your unchanged mass — stays the same, so changing direction quickly is just as hard as on Earth.
Mars, at 0.38 g, is the most human-friendly surface in the solar system after Earth, and long-term low gravity is one of the central challenges of sending people there: muscle and bone weaken without the constant load of Earth's pull, which is why astronauts on the space station exercise for hours every day.
Perguntas frequentes
How much would I weigh on Mars?
About 38% of your Earth weight. Mars has a surface gravity of 3.71 m/s², roughly 0.38 times Earth's, so a 160 lb person would weigh about 60.5 lb there. Enter your own weight above to see the exact figure alongside every other body.
Does my mass change on another planet?
No. Mass is the amount of matter in your body and is identical everywhere in the universe. Only weight — the force of gravity on that mass — changes. This calculator shows your constant mass alongside your changing weight.
Why do I weigh less on the Moon but the same amount of 'stuff' is there?
Because weight depends on gravity, and the Moon's gravity is about one sixth of Earth's. The atoms in your body are unchanged, but the Moon pulls on them with far less force, so a scale reads about one sixth of your Earth weight.
Could I really stand on Jupiter or the Sun?
No — neither has a solid surface. The gas giants are hydrogen and helium all the way down, and the Sun is plasma. The gravity figures here describe the level where the pressure matches Earth's sea level, which is the standard convention for quoting 'surface' gravity on those bodies.