Enter your weight on Earth to see how much you'd weigh across the solar system
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Faiq Ur Rahman is a web designer, digital product developer, and founder of Toolraxy, a growing platform of web-based calculators and utility tools. He specializes in building structured, user-friendly tools focused on health, finance, productivity, and everyday problem-solving.
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Have you ever wondered what you’d weigh on Mars, or how many times heavier you’d feel on Jupiter? Your weight isn’t a fixed number, it depends entirely on the gravity of the planet or moon you’re standing on. Your mass stays the same everywhere, but the force of gravity pulling you down changes dramatically across the solar system. On the Moon, you’d feel feather-light; on Jupiter, you’d feel crushing heaviness.
This weight on other planets calculator shows you exactly how much you’d weigh on different planets and moons in our solar system. Just enter your weight on Earth, select your unit of measurement, and the tool instantly converts it to your weight on Mercury, Venus, Mars, Jupiter, Saturn, Neptune, Uranus, Pluto, the Moon, and even Jupiter’s moon Ganymede. Whether you’re a space enthusiast, a student learning about gravity, or just curious about how your weight would change on other worlds, this calculator delivers instant, accurate results. All calculations run locally in your browser, keeping your data private.
Enter your weight on Earth using the input field, you can use kilograms, pounds, or stones.
Select the unit from the dropdown menu next to the input field.
Instantly see your weight on each planet and moon displayed in the results grid.
The highlighted card shows your weight on Earth for comparison.
Your mass stays constant only the displayed weight changes based on each planet’s gravity.
The calculator uses the ratio of a planet’s surface gravity to Earth’s gravity to convert your weight. This is based on Newton’s law of universal gravitation, where the weight of an object on a planet equals its mass times the planet’s gravitational acceleration.
Formula: W_planet = W_Earth × (g_planet / g_Earth)
Where W_planet is the weight on the target planet, W_Earth is the weight on Earth, g_planet is the gravitational acceleration on the target planet, and g_Earth is Earth’s gravitational acceleration (9.81 m/s²).
For example, if you weigh 70 kg on Earth and want to know your weight on Mars (gravity = 3.71 m/s²):
W_Mars = 70 × (3.71 / 9.81) = 70 × 0.378 = 26.46 kg
The calculator applies this conversion for each planet and moon in the list, using the standard gravitational values for each celestial body. All conversions are performed after converting your input weight to kilograms, then converting the result back to your selected unit.
Consider a person who weighs 70 kg on Earth. Let’s calculate their weight on three different worlds.
Earth (g = 9.81 m/s²):
Weight = 70 kg (baseline)
Mars (g = 3.71 m/s²):
Weight = 70 × (3.71 / 9.81) = 70 × 0.378 = 26.46 kg
You’d weigh about 38% of your Earth weight on Mars.
Jupiter (g = 24.79 m/s²):
Weight = 70 × (24.79 / 9.81) = 70 × 2.527 = 176.89 kg
You’d weigh about 2.5 times your Earth weight on Jupiter.
The Moon (g = 1.62 m/s²):
Weight = 70 × (1.62 / 9.81) = 70 × 0.165 = 11.55 kg
You’d weigh about 16.5% of your Earth weight on the Moon.
Interpretation: The same 70 kg person weighs 70 kg on Earth, but only 26.46 kg on Mars, 176.89 kg on Jupiter, and just 11.55 kg on the Moon. Your mass doesn’t change you’re still 70 kg of mass but the force of gravity pulling you down is dramatically different on each planet.
Earth: 9.81 m/s², Mercury: 3.70, Venus: 8.87, Mars: 3.71, Jupiter: 24.79, Saturn: 10.44, Uranus: 8.69, Neptune: 11.15, Pluto: 0.62, the Moon: 1.62, Ganymede: 1.43. These values determine your weight on each world.
On Mars, you’d weigh about 38% of your Earth weight. A 70 kg person would weigh 26.46 kg on Mars. The calculator shows the exact value based on your input.
On the Moon, you’d weigh about 16.5% of your Earth weight. A 70 kg person would weigh 11.55 kg on the Moon. This is why astronauts can jump so high.
On Jupiter, you’d weigh about 2.5 times your Earth weight. A 70 kg person would weigh 176.89 kg on Jupiter. The calculator shows this dramatic increase.
No, your mass stays the same everywhere. Mass is a fundamental property of matter. Only your weight changes because it depends on gravity.
Pluto has a surface gravity of 0.62 m/s², which is about 6.3% of Earth’s gravity. You’d weigh only about 6.3% of your Earth weight on Pluto.
The Moon has less mass and a smaller radius than Earth, so its gravitational acceleration is only 1.62 m/s² about 1/6 of Earth’s 9.81 m/s². Less gravity means less weight.
The calculator includes the most common planets and moons in our solar system. For other celestial bodies, you can use the formula W_planet = W_Earth × (g_planet / 9.81) with the known gravity of the target body.
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