Weight on Planets
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Enter your weight to see it on all planets in the solar system.
Your Weight on Earth
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Why Does Weight Change on Planets?
Multiply your Earth weight by the planet's gravity ratio: a 150 lb person weighs about 56.6 lb on Mars, 24.8 lb on the Moon and 354.6 lb on Jupiter. Enter your weight in pounds or kilograms above to see it on every planet, the Moon, the dwarf planet Pluto and the Sun, using NASA gravity data.
Your weight is the force of gravity acting on your mass. Your mass stays the same everywhere in the universe; the pull on it does not. The formula is Weight = Mass × g, where g is the gravitational acceleration at the surface.
This calculator uses NASA's equatorial surface gravity for each body, including the small effect of the planet's spin, and the 1 bar pressure level for the gas giants, which have no solid surface. On that basis Earth is 9.78 m/s², Jupiter 23.12 m/s² (2.36 times Earth) and the Moon 1.62 m/s² (about one sixth).
Weight on Mars
Mars has 37.7% of Earth's gravity (3.69 m/s²). A 150 lb person weighs about 56.6 lb there, and a 70 kg person about 26.4 kg. Jumps would go roughly 2.6 times higher, and future crews would need daily exercise to protect muscle and bone.
Weight on Jupiter
Jupiter has the strongest pull of any planet: 2.36 times Earth's at its equatorial cloud tops. A 150 lb person would register about 355 lb. There is no ground to stand on, only gas that gets denser and hotter the deeper you go.
Weight on the Moon
The Moon's gravity is 16.6% of Earth's (1.62 m/s²). A 150 lb person weighs about 24.8 lb, which is why Apollo astronauts could bound along in bulky suits and backpacks.
Weight on the Sun
The Sun's surface gravity is 274 m/s², 28 times Earth's. A 150 lb person would weigh about 4,200 lb, a purely theoretical number since nothing survives near the Sun's surface.
Your Weight on Every Planet: Reference Table
Ratios are the body's equatorial surface gravity divided by Earth's 9.78 m/s².
| Body | Gravity (m/s²) | × Earth | 100 lb | 150 lb | 200 lb | 70 kg |
|---|---|---|---|---|---|---|
| Mercury | 3.70 | 0.378 | 37.8 lb | 56.7 lb | 75.7 lb | 26.5 kg |
| Venus | 8.87 | 0.907 | 90.7 lb | 136.0 lb | 181.4 lb | 63.5 kg |
| Earth | 9.78 | 1.000 | 100 lb | 150 lb | 200 lb | 70.0 kg |
| Moon | 1.62 | 0.166 | 16.6 lb | 24.8 lb | 33.1 lb | 11.6 kg |
| Mars | 3.69 | 0.377 | 37.7 lb | 56.6 lb | 75.5 lb | 26.4 kg |
| Jupiter | 23.12 | 2.364 | 236.4 lb | 354.6 lb | 472.8 lb | 165.5 kg |
| Saturn | 8.96 | 0.916 | 91.6 lb | 137.4 lb | 183.2 lb | 64.1 kg |
| Uranus | 8.69 | 0.889 | 88.9 lb | 133.3 lb | 177.7 lb | 62.2 kg |
| Neptune | 11.00 | 1.125 | 112.5 lb | 168.7 lb | 224.9 lb | 78.7 kg |
| Pluto (dwarf planet) | 0.62 | 0.063 | 6.3 lb | 9.5 lb | 12.7 lb | 4.4 kg |
| Sun | 274.0 | 28.0 | 2,801.6 lb | 4,202.5 lb | 5,603.3 lb | 1,961.1 kg |
Which Gravity Figure This Page Uses
NASA publishes more than one gravity number per planet, and websites often mix them up. This page uses one set throughout: gravity at the equator, including the planet's rotation. For Jupiter, Saturn, Uranus and Neptune it is measured at the 1 bar level, where the atmospheric pressure equals sea level on Earth.
Why Saturn comes out lighter than Earth
Saturn spins once every 10.7 hours and bulges at the equator, so the spin partly offsets its pull there: 8.96 m/s², a little under Earth. Averaged over the whole planet NASA gives 11.19 m/s², slightly above Earth. Older charts quote 10.44, a figure without the rotation effect.
Mass does not change
A bathroom scale measures force, then assumes Earth gravity to show pounds or kilograms. Take it to Mars and it reads 37.7% of your Earth number, but you still have exactly the same amount of you.
Method and sources. Weight on another body = Earth weight × (that body's surface gravity ÷ 9.78 m/s²). Gravity values: NASA Space Science Data Coordinated Archive (NSSDCA) Planetary Fact Sheets, equatorial surface acceleration including rotation, 1 bar level for the gas giants; Sun value from the NASA Sun Fact Sheet. Pluto is a dwarf planet under the 2006 International Astronomical Union definition. Every figure in the table was computed with the formula above. For fun and education.
Frequently Asked Questions
Mass is the amount of matter in your body, measured in kilograms (or, in everyday US use, pounds). It never changes, wherever you are in the universe. Weight is the force gravity exerts on that mass. Scientists measure it in newtons, though everyday scales show it in pounds or kilograms. Weight = mass × g, the gravitational acceleration, which is about 9.8 m/s² on Earth. Your 70 kg of mass stays 70 kg everywhere, but the force on it, and so your scale reading, changes from planet to planet.
At the Martian equator, surface gravity is 3.69 m/s², about 37.7% of Earth's 9.78 m/s² (NASA fact sheet). Multiply your weight by 0.377. A 150 lb person weighs about 56.6 lb on Mars, and a 70 kg person about 26.4 kg. That lower gravity would make lifting and jumping easy, but it is still far from what human bodies evolved for, which is why long missions worry about muscle and bone loss.
Jupiter. Its gravity at the equatorial cloud tops (1 bar level) is 23.12 m/s², 2.36 times Earth's, so a 150 lb person would register about 355 lb. Jupiter has no solid surface, though. Next is Neptune at 1.125 times Earth, then Earth itself, Saturn (0.916), Venus (0.907) and Uranus (0.889). Mercury (0.378) and Mars (0.377) are almost tied. The Sun beats every planet at 28 times Earth gravity.
Slightly less. Venus has 90.7% of Earth's gravity (8.87 m/s²). A 70 kg person weighs about 63.5 kg on Venus, and a 150 lb person about 136 lb. Venus is close to Earth in size and mass, which is why it is called Earth's twin, but its surface is about 465°C (870°F), under clouds of sulfuric acid and a carbon dioxide atmosphere that presses down about 92 times harder than Earth's.
The Moon's surface gravity is 1.62 m/s², about 16.6% of Earth's. Multiply your weight by 0.166. A 70 kg person weighs about 11.6 kg on the Moon, and a 150 lb person about 24.8 lb. That is why Apollo astronauts could move around in heavy suits and life support packs. The Moon's escape velocity is also low, 2.38 km/s against 11.2 km/s for Earth.
Saturn has 95 times Earth's mass but is about 9.45 times wider at the equator, and it is the least dense planet: 0.687 g/cm³, lighter than water, against 5.51 g/cm³ for Earth. Because surface gravity follows g = GM/r², the huge radius nearly cancels the huge mass. Saturn also spins in 10.7 hours, which weakens the pull at its equator further. NASA gives 8.96 m/s² at the equator (0.916 times Earth) and 11.19 m/s² averaged over the planet, all measured at the 1 bar level since Saturn has no solid surface.
No. In 2006 the International Astronomical Union (IAU) reclassified Pluto as a "dwarf planet," which caused a lot of public debate. Under the IAU definition a planet must (1) orbit the Sun, (2) have enough mass to pull itself into a roughly round shape, and (3) have "cleared the neighborhood" around its orbit. Pluto fails the third test, because it shares its orbital zone with many other Kuiper Belt objects. On Pluto you would weigh only 6.3% of your Earth weight, less than on the Moon.
Yes, but not because gravity disappears. Every mass pulls on every other, so there is no true "zero gravity" anywhere. Floating is free fall: astronauts on the International Space Station still feel about 88% of Earth's gravity, but they and the station are falling around Earth together, moving sideways fast enough to keep missing it. Far from any planet or star the pull becomes tiny, and you would drift in near weightlessness.
A neutron star typically has a surface gravity of about 2 × 1011 m/s², roughly 20 billion times Earth's. A 70 kg person would "weigh" about 1.4 × 1012 kg (1.4 trillion kg) there and would be crushed flat instantly. Neutron stars are the collapsed cores of massive stars and the densest objects we can observe directly: NASA notes that a sugar cube of neutron star material would weigh about a billion tons on Earth.
Surface gravity follows Newton's law of gravitation: g = GM/r², where G is the gravitational constant (6.674 × 10−11 m³/kg/s²), M the planet's mass and r its radius. At the equator the planet's spin reduces the effective value a little. To find your weight elsewhere, multiply your Earth weight by that body's gravity divided by Earth's. Example for Mars: 3.69 ÷ 9.78 = 0.377, so 70 kg becomes 26.4 kg and 150 lb becomes 56.6 lb.
Because every other body on the page is measured the same way: at the equator, including the effect of rotation. NASA lists Earth's equatorial value as 9.78 m/s² and its polar value as 9.83 m/s²; 9.81 is a rounded standard value. Comparing like with like keeps the ratios honest. The difference is small: Mars comes out at 37.7% of Earth either way to within a few tenths of a percent.
Slightly, yes. Earth's spin and its bulging shape make gravity at the equator about 0.5% weaker than at the poles (9.78 versus 9.83 m/s² in NASA's fact sheet). Someone who weighs 150 lb at the pole would weigh about 149.2 lb at the equator. A spring scale would show the difference; a balance scale would not, because it compares masses.