🌍 Weight on Other Planets Calculator
Calculate weight on different planets
How to Use This Calculator
Enter Your Mass
Input your mass in kilograms (kg). Your mass is the same everywhere in the universe - it doesn't change. If you only know your weight on Earth, divide by 9.81 m/s² to get your mass (weight ÷ 9.81 = mass).
Select a Planet
Choose the celestial body from the dropdown menu. You can select from Earth, Moon, Sun, and all planets in our solar system. Each has a different surface gravity affecting your weight.
Calculate Your Weight
Click the "Calculate" button to see your weight on the selected planet. The calculator shows your weight in Newtons, the equivalent mass on Earth, and how it compares to your Earth weight.
Explore Different Planets
Try different planets to see how gravity affects your weight! On Jupiter, you'd weigh about 2.5 times more, while on the Moon, you'd weigh only about 1/6 of your Earth weight.
Formula
W = m Ă— gplanet
Where: W = Weight (N), m = Mass (kg), gplanet = Surface gravity of planet (m/s²)
Surface Gravity Values:
• Earth: 9.81 m/s²
• Moon: 1.62 m/s² (0.165 × Earth)
• Mars: 3.71 m/s² (0.378 × Earth)
• Jupiter: 24.79 m/s² (2.53 × Earth)
• Sun: 274.13 m/s² (27.9 × Earth)
• Mercury: 3.7 m/s², Venus: 8.87 m/s², Saturn: 10.44 m/s², Uranus: 8.69 m/s², Neptune: 11.15 m/s²
Worked Examples:
Example 1: Weight on the Moon
Given: Mass = 70 kg, Planet = Moon (g = 1.62 m/s²)
Step 1: Calculate weight
W = m × gmoon = 70 kg × 1.62 m/s²
Result: W = 113.4 N
On Earth, this person would weigh 686.7 N (70 Ă— 9.81). On the Moon, only 16.5% of Earth weight!
Example 2: Weight on Jupiter
Given: Mass = 70 kg, Planet = Jupiter (g = 24.79 m/s²)
Step 1: Calculate weight
W = 70 kg × 24.79 m/s²
Result: W = 1,735.3 N
On Jupiter, you'd feel 2.53 times heavier than on Earth! A 70 kg person would feel like 177 kg.
Example 3: Weight on Mars
Given: Mass = 70 kg, Planet = Mars (g = 3.71 m/s²)
Step 1: Calculate weight
W = 70 kg × 3.71 m/s²
Result: W = 259.7 N
Mars has about 38% of Earth's gravity, making it easier to move around but still substantial enough to walk normally.
About Weight on Other Planets Calculator
The Weight on Other Planets Calculator is a fascinating educational tool that demonstrates how gravity affects your weight on different celestial bodies. While your mass remains constant throughout the universe, your weight changes dramatically depending on the gravitational pull of the planet or moon you're on. This calculator uses the fundamental physics formula W = mg, where weight equals mass times the local gravitational acceleration.
When to Use This Calculator
- Education: Teach students about gravity, mass vs. weight, and planetary science
- Space Exploration: Understand what astronauts experience on different planets and moons
- Science Projects: Calculate weight differences for school science fair projects
- Curiosity: Satisfy your curiosity about how much you'd weigh on Mars, Jupiter, or the Moon
- Space Mission Planning: Engineers use this to design equipment and understand astronaut capabilities
- Physics Demonstrations: Show how gravity varies throughout the solar system
Why Use Our Calculator?
- âś… Instant Results: Get your weight on any planet or moon in seconds
- âś… All Planets Included: Calculate for all planets in our solar system plus the Sun and Moon
- âś… Educational: Learn about surface gravity and how it affects weight
- âś… Comparison Tool: See how your weight compares across different celestial bodies
- âś… Free Tool: No registration or payment required
- âś… Mobile Friendly: Works perfectly on all devices
Common Applications
- Classroom Teaching: Demonstrate gravity concepts in physics and astronomy classes
- Space Missions: Plan for human exploration of Mars and other planets
- Science Communication: Explain space concepts to the general public
- Engineering: Design equipment that works in different gravitational environments
- Entertainment: Fun way to explore space science and learn about our solar system
Tips for Best Results
- Use Mass, Not Weight: Enter your mass in kg, not your weight. Mass is constant, weight changes.
- Convert Weight to Mass: If you only know your Earth weight, divide by 9.81 m/s² to get mass
- Understand the Difference: Remember that mass doesn't change, but weight does based on gravity
- Surface Gravity: These calculations use surface gravity, which varies slightly with altitude
- Real-World Context: On gas giants like Jupiter, you couldn't actually stand on the "surface" as it's mostly gas
Frequently Asked Questions
What's the difference between mass and weight?
Mass is the amount of matter in an object (measured in kg) and doesn't change wherever you go. Weight is the force of gravity acting on that mass (measured in Newtons) and changes with the strength of gravity. Your mass is the same on Earth, Mars, or Jupiter, but your weight changes dramatically.
Why do I weigh less on the Moon?
The Moon has only about 1/6 of Earth's gravity (1.62 m/s² vs 9.81 m/s²) because it's much smaller and less massive. Since weight = mass × gravity, less gravity means less weight, even though your mass stays the same. This is why astronauts can jump much higher on the Moon!
Would I weigh more on Jupiter?
Yes! Jupiter has 2.53 times Earth's gravity (24.79 m/s²). A 70 kg person would weigh about 1,735 N on Jupiter compared to 687 N on Earth. However, Jupiter is a gas giant with no solid surface, so you couldn't actually stand on it.
How do I convert my Earth weight to mass?
If you weigh yourself in pounds or Newtons on Earth, convert to mass: Mass (kg) = Weight on Earth (N) Ă· 9.81. Or if you know your weight in pounds: Mass (kg) = Weight (lbs) Ă— 0.454. Your mass is what you should enter in this calculator.
Why is the Sun's gravity so strong?
The Sun is incredibly massive (333,000 times Earth's mass), so it has enormous gravitational pull. Surface gravity is 274.13 m/s², about 28 times Earth's gravity. However, you'd be instantly vaporized if you tried to stand on the Sun's surface!
Which planet has gravity most similar to Earth?
Venus has the closest surface gravity to Earth at 8.87 m/s² (about 90% of Earth's). Saturn's gravity is also similar at 10.44 m/s². Mars has only 38% of Earth's gravity (3.71 m/s²), making it easier to move around but still substantial.
Does gravity change with altitude on a planet?
Yes, gravity decreases slightly with altitude because you're farther from the planet's center. However, for most practical purposes on a planet's surface, the variation is small. This calculator uses standard surface gravity values, which are measured at the surface level.