How Much Do You Weigh on Other Planets? Every Planet Explained with the Math

If you weigh 160 pounds on Earth, you would weigh about 60 pounds on Mars — not because you lost mass, but because Mars has weaker gravity. On Jupiter, that same person would weigh about 381 pounds. On the surface of the Sun (if you could survive it), you would weigh over 4,000 pounds.

Our  gives you the numbers for every body in the solar system. This guide explains the physics behind those numbers.

Weight vs mass: the critical distinction

Mass is the amount of matter in an object. It does not change regardless of where you are in the universe — your 160-pound body on Earth has the same mass on Mars, in orbit, or in the void between galaxies.

Weight is the force gravity exerts on your mass. It changes with the local gravitational field.

Weight = Mass x Gravitational Acceleration

On Earth, gravitational acceleration is 9.8 m/s² (or 32.2 ft/s²). On Mars, it is 3.72 m/s². The ratio (3.72 / 9.8 = 0.379) tells you that anything on Mars weighs 37.9% of its Earth weight.

Surface gravity across the solar system

Body	Surface gravity (m/s²)	Gravity ratio vs Earth	160 lb person weighs
Mercury	3.70	0.38	61 lbs
Venus	8.87	0.91	145 lbs
Earth	9.80	1.00	160 lbs
Moon	1.62	0.17	27 lbs
Mars	3.72	0.38	61 lbs
Jupiter	24.79	2.53	405 lbs
Saturn	10.44	1.07	171 lbs
Uranus	8.87	0.91	145 lbs
Neptune	11.15	1.14	182 lbs
Pluto	0.62	0.06	10 lbs
Sun	274.0	27.9	4,469 lbs

What determines surface gravity

Surface gravity depends on two factors: the mass of the body and the radius (distance from the center to the surface).

g = GM / r²

Where G is the gravitational constant, M is the body's mass, and r is its radius.

This is why Saturn — much larger than Earth but less dense — has almost the same surface gravity as Earth (1.07g). It is also why Jupiter's surface gravity is 2.53g despite being 318 times Earth's mass: its enormous radius partly counteracts the mass advantage.

And it is why the Sun, at 333,000 times Earth's mass, has "only" 28x Earth's surface gravity — its radius is 109 times Earth's, and that r² term reduces the effect significantly.

Interesting edge cases

Jupiter has no solid surface

Jupiter is a gas giant. The "surface gravity" figure assumes a theoretical surface at the cloud tops. You would not stand there — you would fall through layers of increasingly dense hydrogen, eventually reaching conditions where hydrogen behaves as a metallic liquid. The pressure would crush any human well before reaching that depth.

Saturn is less dense than water

Saturn's average density is 0.69 g/cm³ — lower than water. If you had an ocean large enough, Saturn would float in it. Despite being 95 times Earth's mass, its low density makes its surface gravity only slightly higher than Earth's.

Neutron stars: extreme gravity

A neutron star has roughly 1-2 times the Sun's mass compressed into a sphere about 10 miles in diameter. Surface gravity is approximately 10^11 to 10^12 times Earth's. A 160-pound person would weigh on the order of 10 trillion pounds on a neutron star's surface — and would be instantly crushed by tidal forces long before arrival.

What would reduced gravity feel like on Mars?

At 38% of Earth's gravity, Mars would feel strange in ways that are not immediately obvious. You could jump more than twice as high. Objects would fall in slow motion. Carrying a 100-pound pack would feel like carrying 38 pounds. But your muscles, heart, and bones — adapted for Earth's gravity — would atrophy in ways that make long-term habitation a serious medical challenge. NASA research indicates bone density loss of 1-2% per month in microgravity, even with aggressive countermeasures.

Calculate your weight on every solar system body with the .