Weight on Other Planets Calculator

Enter your Earth weight in Newtons and select a destination to find your weight on any planet, moon, or the Sun.

Created by Luis GonzalezLast updated: May 9, 2026

How to Use This Calculator

1
Enter your Earth Weight
Input your weight on Earth in Newtons (N). Remember, weight is mass times Earth's gravitational acceleration (9.80665 m/s²).
2
Select your Destination
Choose a celestial body from the dropdown list (e.g., Mars, Jupiter, Moon, Sun) to calculate your weight there.
3
Review your results
The calculator will display your weight on the chosen destination, the gravity ratio compared to Earth, and your mass in kilograms.

Example Calculation

An astronaut weighing 700 Newtons on Earth wants to know their weight on Mars for mission planning.

Earth Weight

700

Destination

Mars

Results

265.65 N

Tips

Understand Mass vs. Weight Distinction

Remember that your *mass* (the amount of matter in your body, typically measured in kilograms) remains constant throughout the universe. Your *weight*, however, changes depending on the gravitational pull of the celestial body you're on. Earth's gravity is 9.80665 m/s², while the Moon's is about 1.62 m/s², making you feel much lighter.

Consider the Impact of Reduced Gravity

On bodies with lower gravity, like the Moon (0.165 Earth g), your muscles would feel much stronger, allowing for higher jumps and easier lifting. However, prolonged exposure to microgravity or reduced gravity can lead to bone density loss and muscle atrophy, posing significant challenges for long-duration space missions, as observed by astronauts on the International Space Station.

Account for Extreme Gravitational Fields

On massive bodies like Jupiter (2.53 Earth g) or the Sun (27.9 Earth g), your weight would be enormous, making standing or moving impossible. Even on Earth, small variations in gravity exist; for example, gravity is slightly weaker at the equator than at the poles due to centrifugal force and Earth's oblate spheroid shape.

Exploring Cosmic Gravitational Pull: Your Weight on Other Planets

The Weight on Other Planets Calculator allows you to instantly discover how your weight would change across the solar system, from Mars to Jupiter and even the Sun. By converting your Earth weight to any celestial body, it vividly illustrates the fundamental difference between mass and weight, a core concept in physics. This tool brings astronomy to life, demonstrating how a person weighing 700 Newtons (approximately 157 lbs) on Earth would experience vastly different gravitational forces, such as a mere 265 Newtons on Mars.

Why Gravity Dictates Your Cosmic Scale Reading

Gravity is the fundamental force that dictates your weight on any celestial body. Unlike your mass, which is an intrinsic property of matter and remains constant, your weight is a measure of the gravitational force exerted on your mass by a planet or star. This force depends directly on the mass of the celestial body and its radius. Larger, more massive planets like Jupiter exert a stronger pull, making you heavier, while smaller, less massive bodies like the Moon have weaker gravity, making you lighter. Understanding this distinction is crucial for fields ranging from space exploration to astrophysics, as it underpins orbital mechanics and planetary formation.

The Physics Behind Weight on Other Worlds

The calculation for your weight on other planets is based on Newton's Law of Universal Gravitation, simplified to the gravitational acceleration (g) at the surface of each celestial body.

The primary steps are:

Calculate Your Mass (constant):

Mass (kg) = Earth Weight (N) / Earth's Gravitational Acceleration (9.80665 m/s²)

Calculate New Weight on Destination:

New Weight (N) = Mass (kg) × Destination's Gravitational Acceleration (g_destination)

For example, Earth's g is 9.80665 m/s², while Mars's g is approximately 3.72076 m/s².

💡 To understand the fundamental calculation of force, our Angular Velocity Calculator, while different in concept, similarly relies on precise physical measurements.

Calculating Weight on Mars for a Space Traveler

Imagine an individual whose Earth Weight is 700 Newtons and wants to know their weight on Mars.

Calculate Mass:
- Mass = 700 N / 9.80665 m/s² = 71.389 kg.
Determine Mars's Gravitational Acceleration:
- Mars's g = 3.72076 m/s².
Calculate Weight on Mars:
- Weight on Mars = 71.389 kg × 3.72076 m/s² = 265.65 N.

So, a person weighing 700 N on Earth would weigh approximately 265.65 N on Mars. This is roughly 38% of their Earth weight.

💡 For a deeper dive into the relationship between mass, velocity, and force, our Arrow Momentum Calculator explores similar principles in a different context.

Gravitational Pull and Planetary Characteristics

The gravitational acceleration on a planet's surface is directly influenced by its mass and radius. Planets with greater mass, like Jupiter, exert a stronger gravitational pull, resulting in higher 'g' values. Conversely, smaller, less dense bodies such as the Moon have significantly weaker gravity. This gravitational variance profoundly impacts everything from planetary atmospheres (stronger gravity can hold onto lighter gases) to the geological processes that shape their surfaces. For instance, the Moon's low gravity is a key reason it lacks a substantial atmosphere, allowing for extreme temperature swings and direct exposure to solar radiation. These fundamental characteristics are crucial for astronomers and planetary scientists studying the formation and evolution of celestial bodies, as detailed by NASA's planetary science missions.

The Historical Quest to Understand Gravity

The understanding of gravity has been one of humanity's longest and most profound scientific quests. Early philosophical ideas about why objects fall to Earth date back to ancient Greece, but it was Sir Isaac Newton in the late 17th century who first formulated a universal law of gravitation. His groundbreaking work, detailed in Philosophiæ Naturalis Principia Mathematica (1687), described gravity as a force of attraction between any two objects with mass, proportional to their masses and inversely proportional to the square of the distance between them. This provided the mathematical framework to explain not only falling apples but also planetary orbits. While Newton's law was incredibly successful, it was later superseded by Albert Einstein's theory of General Relativity in the early 20th century, which describes gravity not as a force, but as a curvature of spacetime caused by mass and energy. Einstein's theory offered a more accurate description of gravity, particularly in extreme conditions like near black holes or for very precise astronomical observations. This historical progression from observation to mathematical description and eventually to a deeper conceptual understanding highlights the iterative nature of scientific discovery.

Frequently Asked Questions

Why does my weight change on different planets but my mass stays the same?

Your weight changes on different planets because weight is a measure of the force of gravity acting on your mass, and gravitational pull varies between celestial bodies. Mass, on the other hand, is the amount of matter in your body and is an intrinsic property that remains constant regardless of location in the universe. For example, you would weigh significantly less on the Moon due to its weaker gravity, but your body would still contain the same amount of atoms and molecules.

Which planet would I weigh the most on, and why?

You would weigh the most on Jupiter, the largest planet in our solar system, because it has the strongest gravitational pull among all the planets. Its immense mass creates a gravitational acceleration about 2.53 times that of Earth. This means if you weigh 150 pounds on Earth, you would weigh approximately 379.5 pounds on Jupiter, experiencing a crushing gravitational force far beyond what human bodies are designed to withstand.

How does the Moon's gravity compare to Earth's, and what would it feel like to walk there?

The Moon's gravity is significantly weaker than Earth's, approximately one-sixth (0.165) of Earth's gravitational acceleration. This means a person weighing 150 pounds on Earth would weigh only about 24.75 pounds on the Moon. Walking on the Moon would feel like a series of effortless leaps and bounds, requiring less muscular effort to move and allowing for much higher jumps, as famously demonstrated by Apollo astronauts who bounded across the lunar surface.

What is the difference between gravitational acceleration and gravitational force?

Gravitational acceleration is the acceleration experienced by an object due to gravity, independent of its mass, measured in meters per second squared (m/s²). On Earth, this is approximately 9.80665 m/s². Gravitational force, however, is the attractive force between two objects with mass, proportional to their masses and inversely proportional to the square of the distance between them. Weight is the gravitational force exerted on an object by a celestial body, calculated as mass × gravitational acceleration.