Weight on Planets Calculator – Instantly Compare Your Weight on All Planets

How Does the Weight on Planets Calculator Work?

The Weight on Planets Calculator uses your mass and multiplies it by the surface gravity of each planet, instantly showing your weight on each world. Gravity varies by planet: for example, Mars has about 38% of Earth’s gravity, Jupiter has 2.53 times as much. [8]

• Accurate Gravity Factors: Data from NASA and scientific tables. [32]
• All Worlds Included: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, Ceres, Eris, and the Moon.
• Supports kg & lb: Enter your mass in kilograms or pounds—results adapt instantly.
• Copy & Share: Copy the full table for science projects or fun with friends.
• Mobile-First: Beautiful on phones and desktops.

Common Use Cases

The Science of Weight: Understanding Mass and Gravity

Have you ever wondered why the Weight on Planets Calculator shows different results for each planet? The answer lies in the fundamental scientific principles of mass, weight, and gravity. While often used interchangeably in daily conversation, mass and weight are distinct concepts. [19]

Mass vs. Weight: What’s the Difference?

Mass is the measure of the amount of matter in an object. [5] It is an intrinsic property that remains constant no matter where you are in the universe. Whether you are on Earth, the Moon, or adrift in deep space, your mass does not change. [10] It’s typically measured in kilograms (kg).

Weight, on the other hand, is the force of gravity acting upon an object’s mass. [16] It is calculated by multiplying an object’s mass by the local acceleration due to gravity (Weight = mass × gravity). [23] Since the force of gravity varies from one celestial body to another, your weight changes depending on where you are. This is why you would weigh significantly less on Mars than on Earth. Weight is a force, measured in Newtons (N), although it’s commonly expressed in pounds (lb) or kilograms (kg) in everyday contexts.

Newton’s Law of Universal Gravitation

The force of gravity was mathematically described by Sir Isaac Newton in his Law of Universal Gravitation. This law states that every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. [6, 9, 11] The formula is:

F = G * (m₁m₂) / r²

Here, ‘F’ is the gravitational force (your weight), ‘m₁’ is your mass, ‘m₂’ is the planet’s mass, ‘r’ is the planet’s radius (the distance from its center to its surface), and ‘G’ is the universal gravitational constant. This equation explains why a planet’s properties determine its surface gravity. A more massive planet exerts a stronger gravitational pull, while a larger radius (for the same mass) results in a weaker pull at the surface because you are farther from its center of mass. [26]

Surface Gravity on Gas Giants

Calculating surface gravity for rocky planets like Earth or Mars is straightforward. But what about gas giants like Jupiter and Saturn, which have no solid surface? For these planets, scientists define the “surface” as the level in the atmosphere where the atmospheric pressure is equal to 1 bar, the same as the average pressure at sea level on Earth. [13] The calculator uses these standardized values to determine your weight on these massive worlds, where the immense gravitational forces are generated by their enormous mass, even if their density is lower than Earth’s. [27, 34]

A Deep Dive Into Our Solar System

Using the Weight on Planets Calculator is more than just a novelty; it’s a journey across our solar system. Each planet offers a unique gravitational environment, telling a story about its mass, size, and composition. Let’s explore what your weight on these worlds reveals.

The Inner Planets: Rocky and Dense

• Mercury: As the smallest planet, Mercury has a weak gravitational pull (0.38g). Weighing just 38% of your Earth weight, you’d feel incredibly light. Despite its small size, Mercury is very dense, with a large metallic core that contributes to its surprisingly strong gravity for its dimensions. [8]
• Venus: Often called Earth’s twin due to its similar size and mass, Venus has a surface gravity of 0.91g. [2] Your weight would be almost the same as on Earth. However, with surface temperatures hot enough to melt lead and crushing atmospheric pressure, it’s not a place you’d want to stand on a scale. [18]
• Earth: Our home planet serves as the baseline with a gravity of 1g. All calculations in the tool are relative to the familiar pull we experience every day.
• Mars: The Red Planet has a gravity of just 0.38g, identical to Mercury’s. [39] This low gravity is a major topic of interest for future human exploration, as it would affect everything from astronaut health to construction techniques.

The Outer Giants: Massive Worlds of Gas and Ice

• Jupiter: The king of the planets, Jupiter’s immense mass creates a powerful gravitational field of 2.53g. [28] You would weigh more than two and a half times your Earth weight, feeling incredibly heavy. This immense gravity plays a crucial role in the solar system, acting as a cosmic bodyguard that deflects asteroids and comets. [2]
• Saturn: While Saturn is enormous, it is the least dense planet in our solar system—so low, in fact, that it would float in water. Its surface gravity is only 1.07g, barely more than Earth’s. This is because its low density means its “surface” is very far from its massive core. [26, 40]
• Uranus and Neptune: These ice giants have similar gravities. Uranus has a slightly weaker pull at 0.89g, while Neptune is a bit stronger at 1.14g. Your weight would feel surprisingly normal on these distant, chilly worlds. [42]

Dwarf Planets and The Moon

• The Moon: With a gravity of only 0.165g (about one-sixth of Earth’s), the Moon is the classic example of a low-gravity environment. This is why Apollo astronauts could take giant leaps with ease. [2]
• Pluto, Ceres, & Eris: These dwarf planets have extremely low gravity. On Pluto (0.063g), you would weigh just 6% of your Earth weight and could jump astonishingly high. Exploring these tiny, icy worlds highlights the vast range of gravitational forces in our cosmic neighborhood.

Fun with Physics: Gravity’s Impact on Everyday Activities

The Weight on Planets Calculator reveals more than just a number; it opens a window into how different physical laws would feel. Gravity affects everything, from how high you can jump to how you would play your favorite sports. Let’s explore some fun hypothetical scenarios.

How High Could You Jump?

Your ability to jump is a battle against gravity. The weaker the gravitational pull, the higher you can soar with the same amount of effort. If you can jump 50 cm (about 1.6 feet) on Earth, here’s how high you might leap on other worlds:

• On Mars (0.38g): You could jump approximately 1.3 meters (4.3 feet) high! [2]
• On the Moon (0.165g): Your jump could reach an incredible 3 meters (almost 10 feet), easily clearing a basketball hoop. [2]
• On Jupiter (2.53g): You would struggle to get your feet off the ground, with a jump height of only about 20 cm (7.8 inches). [1]
• On Pluto (0.063g): Prepare for liftoff! You could leap nearly 8 meters (26 feet) into the air. [1]

These simple calculations show how profoundly a planet’s gravity would alter human movement and athletics, turning a simple jump into an extraordinary feat.

Interplanetary Sports: A Whole New Ball Game

Imagine playing sports in these different gravitational fields. On Mars, a quarterback could throw a football much farther, and a golfer could hit a ball for miles. High-jump and long-jump records would be shattered. Conversely, sports on Jupiter would be incredibly challenging. A baseball would feel as heavy as a shot put, and lifting weights would be nearly impossible for even the strongest athletes. The Weight on Planets Calculator helps science fiction writers and game designers create more realistic worlds by grounding their creative ideas in real physics.

An Essential Educational Tool for Science

Beyond being a fun novelty, the Weight on Planets Calculator is a powerful educational resource that brings abstract scientific concepts to life. It serves as an interactive learning module for students, teachers, and anyone with a curious mind. [7, 30]

For Students: Visualizing Abstract Concepts

For students, understanding the difference between mass and weight can be challenging. This tool provides instant, personalized feedback that makes the concept tangible. [3] By entering their own weight, they can see firsthand how a constant mass results in different weights across the solar system. It transforms a textbook formula into a personal discovery, helping to solidify their understanding of gravity, mass, and the properties of celestial bodies. [17]

For Teachers: Engaging Classroom Activities

Teachers can use this calculator as a centerpiece for engaging lesson plans on astronomy and physics. [21] Classroom activities could include: [25]

• Data Analysis: Students can use the tool to generate a table of their weights, then create graphs to compare the gravitational pull of different planets.
• Problem-Solving: Teachers can pose questions like, “On which planet would you need to be the strongest to lift a 10kg box?” or “If you can jump 1 meter high on Earth, how high could you jump on the Moon vs. Jupiter?”
• Creative Writing: Encourage students to write a story about a day spent on a planet of their choice, describing how the different gravity affects their activities.

By integrating this interactive tool, educators can foster curiosity and make science education more dynamic and memorable. [20]