Weight on Other Planets Calculator
Calculate your weight in lbs and kg on every planet, the Moon, and the Sun from surface gravity.
Returns weight and gravity multiplier for all 8 planets.
How Planet Weight Calculations Work
Your weight is not a fixed property of your body — it is the gravitational force the planet exerts on your mass. On a different planet with different gravity, you weigh more or less even though your mass stays the same.
Core formula:
Weight on planet = Weight on Earth × (Planet gravity ÷ Earth gravity)
Since we typically use surface gravity ratios, this simplifies to:
Weight on planet = Earth weight × Gravity multiplier
Surface gravity multipliers (relative to Earth = 1.0):
| Planet | Gravity Multiplier |
|---|---|
| Mercury | 0.38 |
| Venus | 0.91 |
| Moon | 0.165 |
| Mars | 0.38 |
| Jupiter | 2.34 |
| Saturn | 1.06 |
| Uranus | 0.92 |
| Neptune | 1.19 |
Worked example:
A person weighs 165 lb (75 kg) on Earth.
- On the Moon: 165 × 0.165 = 27.2 lb (11 kg) — you could jump roughly 6× higher
- On Mars: 165 × 0.38 = 62.7 lb (28.5 kg) — about as heavy as a 10-year-old child on Earth
- On Jupiter: 165 × 2.34 = 386 lb (175 kg) — you could barely stand
Why Jupiter’s gravity is so strong:
Jupiter is 318× Earth’s mass, but also much larger. Surface gravity depends on both mass and radius: g = GM/r². Jupiter’s enormous radius partially offsets its mass, giving 2.34× Earth gravity rather than 318×.
Fun comparison:
The Sun’s surface gravity is 28× Earth’s. That same 165 lb person would weigh 4,620 lb on the Sun’s surface — equivalent to a large SUV pressing down on each foot.
Mass always stays constant. Only weight changes with gravity.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.