Weight on Other Planets Calculator
Enter your weight on Earth and pick a world to see what you would weigh on the Moon, Mars, Jupiter, or the Sun — scaled by each body's surface gravity.
Weight, not mass
Your mass never changes — only your weight does, because each world pulls on that mass with a different surface gravity.
What is the weight on other planets calculator?
Your Earth weight, scaled by gravity
The weight on other planets calculator shows what you would weigh somewhere other than Earth. Weight is the pull of gravity on your body, and every world pulls with a different strength, so the same person tips the scales differently on the Moon, on Mars, or near the Sun. Enter your weight on Earth, pick a celestial body, and the calculator scales your weight by that body's surface gravity relative to Earth's. Your mass — the amount of matter you are made of — stays exactly the same everywhere; it is only the weight that shifts.
Enter your Earth weight and choose a world — the Moon, a planet, or the Sun — to see your weight there instantly, in the same unit you typed in.
Your weight on another world is your Earth weight multiplied by the ratio of that body's surface gravity to Earth's standard gravity of 9.80665 m/s².
weight on body = Earth weight × (g_body ÷ g_earth)Because weight is mass times gravity (W = m × g), the mass cancels out of the ratio and only the gravities matter. That is why the unit you enter is the unit you get back: scaling by a pure ratio never changes the unit. Mars pulls at 3.71 m/s², a little over a third of Earth's, so you weigh just over a third as much there.
Suppose you weigh 70 kg on Earth and want to know your weight on Mars.
Find the gravity ratio
Mars surface gravity is 3.71 m/s²; divide by Earth's 9.80665 to get a ratio of about 0.378.
Scale your Earth weight
70 × 0.378 ≈ 26.48 — your weight on Mars in the same unit you entered.
Compare other worlds
On the Moon (1.62 m/s²) the same 70 becomes about 11.56, while on Jupiter (24.79 m/s²) it climbs to roughly 176.95.
The arithmetic is exact, but a few real-world points are worth keeping in mind.
Reference gravities and no solid surface on gas giants
The surface-gravity figures come from the NASA Planetary Fact Sheet and are reference values at each body's equator and mean radius. Real measured weight varies slightly with altitude and latitude. Gas giants such as Jupiter, Saturn, Uranus, and Neptune have no solid surface, so their gravity is quoted at the 1-bar pressure level — you could not actually stand there. The Sun is included for comparison only; its surface is plasma, not ground.