Planet Weight Calculator — How Much Would You Weigh on Other Planets?

You weigh 70 kg on Earth. On the Moon, you'd weigh about 11.6 kg. On Jupiter, you'd be crushed at 164 kg. Weight isn't a fixed property of you — it's the result of gravity pulling on your mass, and every world in the solar system has its own gravitational pull.

Find your weight anywhere in the solar system with the planet weight calculator on CalcHub.

Weight vs. Mass: The Quick Distinction

Your mass (in kilograms) never changes — it's the amount of matter in your body. Your weight (technically in Newtons, but commonly expressed in kg) depends on the local gravitational acceleration (g). On Earth, g = 9.81 m/s². On Mars, g = 3.72 m/s².

Weight = mass × local g ÷ Earth's g

Surface Gravity Across the Solar System

Body	Surface Gravity (m/s²)	Relative to Earth	Your weight if 70 kg on Earth
Sun	274.0	27.9×	1953 kg
Mercury	3.7	0.38×	26.6 kg
Venus	8.87	0.91×	63.4 kg
Earth	9.81	1.00×	70 kg
Moon	1.62	0.17×	11.6 kg
Mars	3.72	0.38×	26.5 kg
Jupiter	24.79	2.53×	177 kg
Saturn	10.44	1.06×	74.5 kg
Uranus	8.87	0.90×	63.2 kg
Neptune	11.15	1.14×	79.5 kg
Pluto	0.62	0.063×	4.4 kg

How to Use the Calculator

1. Enter your weight (in kg or lbs)
2. Select a planet, moon, or other body
3. See your weight there instantly, along with that body's surface gravity

The CalcHub calculator covers all eight planets, the Moon, Pluto, and a few interesting extras like Ganymede and Titan.

Why Jupiter's Gravity Is "Only" 2.5× Earth

Jupiter is 318 times more massive than Earth, yet its surface gravity is only 2.53 times Earth's. How? Because Jupiter is also massive in volume — you'd be standing much farther from the center than you would on Earth. Gravity weakens with distance (inverse square law), so the distance from the surface to the center matters as much as total mass.

The Sun, by contrast, has its enormous mass compressed into a sphere — from the surface, you'd be experiencing the pull of that mass from much closer, giving a gravitational pull nearly 28 times Earth's.

Standing on Gas Giants

Jupiter and Saturn don't have solid surfaces — they're mostly hydrogen and helium that gradually densifies from gas to liquid as you descend. If you could somehow stand on the "surface" (usually defined as the point where atmospheric pressure equals 1 bar), you'd experience those gravity figures. Of course, you'd be immediately crushed, compressed, and dissolved long before reaching that point.

Could humans ever adapt to living on high-gravity worlds?

Extended exposure to high gravity is hard on the human body — cardiovascular stress, bone loading, and musculoskeletal strain increase dramatically. Mars at 0.38g is manageable. Studies suggest long-term habitation there might cause some bone density loss without countermeasures. Anything above about 1.5g sustained would be challenging; Jupiter's 2.53g would require extraordinary medical intervention.

Why does Saturn have nearly the same gravity as Earth?

Saturn is much larger than Earth but far less dense — it's famously less dense than water (if you could find an ocean big enough, it would float). Low density + large radius = relatively modest surface gravity despite enormous mass.

How is this relevant to space mission planning?

Surface gravity directly affects how much fuel is needed to launch a rocket off a planet. Mars's lower gravity makes it much cheaper to launch from Mars back to Earth than launching from Earth's surface. This is a major factor in Mars mission architecture — the return trip is actually easier than the outbound journey in terms of launch energy.

Related Calculators

• Orbital Period Calculator — how long each planet takes to orbit the Sun
• Schwarzschild Radius Calculator — extreme gravity of black holes
• Light Year Converter — distances between planets and stars