How much would you weigh on other planets?
Multiply your weight on Earth by each planet's gravity next to Earth's. A 100 pound person weighs about 17 pounds on the Moon, 38 on Mars and Mercury, 90 on Venus, 253 on Jupiter, 14 on Titan and 6 on Pluto. Your mass never changes. Only the pull does.
This is the math inside Snack Lob, a slingshot game about feeding hungry monsters on eight planets. It is coming to iPad first.
Your weight in eight places
| Where | Multiply by | 50 lb | 70 lb | 100 lb | 150 lb |
|---|---|---|---|---|---|
 Pluto | 0.06 | 3 lb | 4 lb | 6 lb | 9 lb |
 Titan | 0.14 | 7 lb | 10 lb | 14 lb | 21 lb |
 The Moon | 0.17 | 9 lb | 12 lb | 17 lb | 26 lb |
 Mars | 0.38 | 19 lb | 27 lb | 38 lb | 57 lb |
 Mercury | 0.38 | 19 lb | 27 lb | 38 lb | 57 lb |
 Venus | 0.90 | 45 lb | 63 lb | 90 lb | 135 lb |
 Earth | 1.00 | 50 lb | 70 lb | 100 lb | 150 lb |
 Jupiter | 2.53 | 126 lb | 177 lb | 253 lb | 379 lb |
Where the numbers come from. Gravity figures are NASA's. The throw distances are worked out from them with the air each place has, the same way the game does it. NASA Planetary Fact Sheet, NASA on Titan.
Try it: one throw in all eight places
Pull back on the picture and let go. The apple leaves your hand at the same speed both times.
More questions
Does your mass change on another planet?
No. Mass is how much of you there is, and that stays the same everywhere. Weight is how hard a planet pulls on that mass, so it changes with the planet.
Where would you weigh the most?
Of these eight places, Jupiter, where you weigh 2.53 times what you do on Earth. You weigh the least on Pluto, at 0.06 times.
Why does a throw go further where you weigh less?
The same pull that makes you lighter also brings a thrown thing down more slowly, so it has more time to travel. An apple that goes 11.5 meters on Earth goes about 173.0 meters on Pluto.
Snack Lob: one throw on eight planets