Weight on Other Planets Calculator
Enter your weight in pounds, kilograms or newtons and see what you would weigh on the Moon, Mars, Jupiter and every other world in the solar system, from NASA's published surface gravity. Add how high you can jump on Earth to see the same jump on each world. Free, no sign-up, and nothing leaves your browser.
On Mars you would weigh
57.05 lb
On Mars you would weigh
0.380 ×
Compared with Earth
3.73 m/s²
Surface gravity
253.8 N
Force on you
Your mass is 68.04 kg on every world; only the weight changes.
Your weight on every world
| World | Gravity (m/s²) | × Earth | Your weight | Compared with Earth |
|---|---|---|---|---|
| Sun | 274 | 27.940 | 4,191 lb | — |
| Mercury | 3.7 | 0.377 | 56.59 lb | |
| Venus | 8.87 | 0.904 | 135.7 lb | |
| Earth | 9.80665 | 1.000 | 150.0 lb | |
| Moon | 1.62 | 0.165 | 24.78 lb | |
| Mars | 3.73 | 0.380 | 57.05 lb | |
| Jupiter | 25.92 | 2.643 | 396.5 lb | |
| Saturn | 11.19 | 1.141 | 171.2 lb | |
| Uranus | 9.01 | 0.919 | 137.8 lb | |
| Neptune | 11.27 | 1.149 | 172.4 lb | |
| Pluto | 0.62 | 0.063 | 9.48 lb |
The Sun, Jupiter, Saturn, Uranus and Neptune have no solid surface. Their weights are for the visible surface or the 1-bar pressure level, where you could never stand; they show what the gravity there would do.
Gravity values are NASA's mean surface gravity from its Planetary Fact Sheets; Earth is the standard 9.80665 m/s².
How to Use the Weight on Other Planets Calculator
- 1. Enter your weight on Earth. Type a number and pick the unit: pounds, kilograms as a bathroom scale reads them, or newtons if you already have a force. The calculator opens on 150 pounds.
- 2. Add a jump if you like. Enter how high you can jump on Earth, in centimetres or inches, and every row gains a jump height for that world. Leave it blank to skip.
- 3. Pick a world. The Show the result for menu fills the headline box with your weight there, its gravity compared with Earth, the force on you in newtons and your jump.
- 4. Compare them all. The table lists every world with its gravity, your weight and a bar that shows the ratio to Earth. The Sun is in the table but off the bar scale.
Weight Is a Force, Mass Is Not
Your mass is how much matter you are made of, and it is the same on every world. Your weight is the pull of gravity on that mass, W = m × g, where g is the free-fall acceleration at the surface. On Earth g is 9.80665 m/s², the standard value used to define the kilogram-force and the pound-force, so a 70 kg person weighs 686.5 N. On the Moon g is 1.62 m/s², and the same 70 kg is pulled with 113.4 N.
Everyday weights are quoted as what a scale reads, and a scale is calibrated on Earth. So the calculator multiplies your weight by the ratio of the two gravities: weight on the world = weight on Earth × g(world) ÷ 9.80665. That is the number a bathroom scale would show if you carried it there.
| World | Gravity (m/s²) | × Earth | Weight |
|---|---|---|---|
| Mercury | 3.7 | 0.377 | 56.59 lb |
| Venus | 8.87 | 0.904 | 135.7 lb |
| Earth | 9.80665 | 1.000 | 150.0 lb |
| Moon | 1.62 | 0.165 | 24.78 lb |
| Mars | 3.73 | 0.380 | 57.05 lb |
| Jupiter | 25.92 | 2.643 | 396.5 lb |
| Saturn | 11.19 | 1.141 | 171.2 lb |
| Uranus | 9.01 | 0.919 | 137.8 lb |
| Neptune | 11.27 | 1.149 | 172.4 lb |
| Pluto | 0.62 | 0.063 | 9.48 lb |
| Sun | 274 | 27.940 | 4,191 lb |
Three of these rows hold surprises. Mars has only about 38% of Earth's gravity even though it is about half Earth's size, and Mercury, which is smaller than Mars, has nearly the same surface gravity because it is denser. Venus and Uranus are close to Earth's. And Saturn is by far the lightest planet for its size, yet its cloud tops still pull harder than Earth's surface.
Where the gravity numbers come from
Each value is the mean surface gravity on NASA's Planetary Fact Sheets (nssdc.gsfc.nasa.gov/planetary/factsheet). For Jupiter, Saturn, Uranus and Neptune, which have no solid surface, NASA gives it at the 1-bar pressure level, roughly sea-level pressure on Earth. The Sun's 274 m/s² is its value at the visible surface.
Jumping Elsewhere
If your legs launch you at the same speed on any world, you rise to a height inversely proportional to gravity: h = v² ÷ 2g. A 50 cm jump on Earth becomes about 303 cm on the Moon, about 132 cm on Mercury, 18.9 cm on Jupiter and nearly 8 m on Pluto. It is an idealised picture. A spacesuit, a thick atmosphere or a heavy pack changes the real answer, and on Jupiter you would have nothing to push against.
Limits of the Numbers
- Mean gravity. Gravity varies over a world. On Earth it runs from 9.78 m/s² at the equator to 9.83 m/s² at the poles, and NASA's mean is 9.82. The calculator uses the standard 9.80665 m/s² for Earth so your own weight is unchanged.
- No solid surface. You cannot stand on the Sun, Jupiter, Saturn, Uranus or Neptune. Their rows show the gravity at a level you could never reach.
- Rotation and altitude. A spinning world's surface gravity depends on latitude, and gravity falls with height; both are ignored.
Frequently Asked Questions
- How do I calculate my weight on another planet?
- Multiply your weight by the planet's surface gravity divided by Earth's: weight there = weight on Earth × g(planet) ÷ 9.80665. For a 150 lb person on Mars, that is 150 × 3.73 ÷ 9.80665 = 57.05 lb. Your mass does not change, only the pull of gravity on it.
- How much would I weigh on the Moon?
- About 16.5% of your Earth weight, because the Moon's surface gravity is 1.62 m/s² against 9.80665 m/s². A 150 lb person would read 24.78 lb on a scale there, and a 70 kg person 11.56 kg, though the force on them would be 113.4 N.
- Where in the solar system would I weigh the most?
- Among the planets, on Jupiter, where you would weigh 2.64 times as much at the 1-bar level. On the Sun's visible surface you would weigh about 27.9 times as much, but nothing can stand there. Among worlds with a solid surface, only Venus comes close to Earth, at 0.904 times, and every other rocky world is lighter.
- Is mass the same on every planet?
- Yes. Mass measures the amount of matter in your body and does not depend on where you are. A 68 kg person is 68 kg on Earth, on Mars and in deep space. Only weight, the force of gravity on that mass, changes. Scales that read in kilograms are really showing weight divided by Earth's standard gravity.
- Why does the calculator use 9.80665 and not 9.8 or 9.82?
- 9.80665 m/s² is the standard acceleration of gravity, exact by definition, and it is what calibrates kilogram-force and pound-force. NASA's 9.82 is Earth's mean surface gravity and 9.8 is a rounded teaching value. The differences are 0.14% and 0.07% respectively, so results barely move, but the standard value keeps your own Earth weight exactly 1.000 times itself.
- Which planet has the weakest gravity?
- Of the eight planets, Mercury and Mars are the weakest at 3.70 and 3.73 m/s². Pluto and the Moon, which are not planets, have much less at 0.62 and 1.62 m/s². Uranus at 9.01 m/s² and Venus at 8.87 m/s² come closest to Earth's.