Your weight on other planets
Type your weight. Watch the little robot jump on every world, with the hang time each one’s gravity really gives you.
Surface gravity from NASA’s Planetary Fact Sheet (Earth 9.8 m/s²). Jupiter, Saturn, Uranus and Neptune have no solid surface, so their numbers are for the cloud tops. Jump heights assume you push off just as hard as on Earth.
To find your weight on another planet, multiply your Earth weight by that planet’s gravity divided by Earth’s. Using NASA’s figures, a 150 lb person would weigh about 25 lb on the Moon, 57 lb on Mars and 354 lb on Jupiter. Your mass, the amount of you, stays the same everywhere; only the pull of gravity changes. That is also why you could jump about six times higher on the Moon.
Gravity is the whole game in Fluxo
Fluxo: Gravity Runner · free on iPhone · optional one-time Premium
- In Fluxo: Gravity Runner one tap reverses gravity. Ride the floor or the ceiling of a neon tunnel and flip between them to slip past spikes, pistons and laser gates.
- Every 8 points you enter a new sector with its own rule, from Orb Rush to Spike Storm, and a Daily Challenge course that is the same for every player.
- Classic, Hyper and Zen modes, 18 pixel-art pilots, and it works offline. Rated 4+. The full game is free; Premium is a one-time purchase, never a subscription.
Weight or mass? The 20-second version
Try this in class
- Each student predicts which planet makes them heaviest and lightest before typing anything.
- Compare the Moon and Mars: same rocky worlds, different pull. Why?
- Use the jump heights: on which world could you jump over a basketball hoop (3.05 m)?
More gravity play: gravity flipbook · midair flip motion lab · play a gravity flip runner
Questions
How do you calculate weight on other planets?
Multiply your weight by the planet’s surface gravity divided by Earth’s (9.8 m/s²). On Mars that is 3.7 ÷ 9.8, so you weigh about 38% of your Earth weight.
Where would I weigh the most?
On Jupiter, about 2.4 times your Earth weight at the cloud tops. The Sun would be far more, about 28 times, but nobody is standing there.
Where would I weigh the least?
Of the worlds here, on Pluto: about 7% of your Earth weight. On the Moon you would weigh about a sixth.
Does my mass change in space?
No. Your mass stays the same everywhere. Only your weight, the pull of gravity on that mass, changes.
Is it accurate for the gas giants?
Jupiter, Saturn, Uranus and Neptune have no solid ground, so the figures are for the level of their cloud tops, as NASA lists them.
More free tools
- Predict the landing side after every gravity flipCount odd and even gravity flips, predict the final ceiling or floor, and check eight original routes with explanations.
- Mid-Air Gravity Flip Lab — See Momentum After a ReversalMove the flip time and step through a simple gravity-reversal model. See why changing acceleration does not instantly reverse movement.
- Geometry Dash alternativeGeometry Dash is a brilliant rhythm platformer for $3.99. Fluxo is a free one-tap gravity runner: flip gravity, dodge the tunnel, climb the ranks offline.
- Aim Trainer: Free Online Aim Test for Speed and AccuracyA free online aim trainer. Hit 30 targets as fast as you can and get your average time per target and accuracy. Three target sizes, sound, challenge link. No sign-up.
