Discover what you'd weigh across the solar system
Enter your weight above to see your weight on other planets
Your weight on other planets depends on the planet's surface gravity, which is determined by the planet's mass and size. A more massive planet pulls you down harder, making you weigh more. A larger planet (with the same mass) spreads that pull over a bigger area, making you weigh less.
Weight vs. Mass: Your mass (the amount of matter in your body) stays the same everywhere in the universe. But your weight (the force of gravity pulling on your mass) changes depending on where you are.
Mars has about 38% of Earth's gravity, so you would weigh roughly one-third of your Earth weight. For example, a 150-pound person would weigh about 57 pounds on Mars. This reduced gravity is one of the challenges NASA is studying for future crewed missions to Mars.
Jupiter has the strongest gravity of any planet in our solar system, at 2.36 times Earth's gravity. A 150-pound person would weigh about 354 pounds on Jupiter. You wouldn't be able to stand up easily!
The Moon has only about 17% of Earth's gravity. A 150-pound person would weigh just 25.5 pounds on the Moon, which is why Apollo astronauts could hop and bounce so easily even while wearing heavy space suits.
Mass is the amount of matter in your body and stays the same everywhere in the universe. Weight is the force of gravity pulling on your mass, so it changes depending on which planet or moon you're on. You'd have the same mass on Jupiter as on Earth, but you'd weigh over twice as much.
A planet's surface gravity depends on its mass and size. A more massive planet pulls harder, increasing gravity. But a larger planet spreads that pull over a bigger area, which can reduce surface gravity. That's why Saturn, despite being much larger than Earth, has similar gravity—it's big but not very dense.
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