Weight on Other Planets Calculator
See what you would weigh on the Moon, Mars, Jupiter and the other bodies of the Solar System — mass stays the same, gravity does not.
Your weight on every world in the Solar System.
How the weight on other planets calculator works
Weight is mass times the local gravity. Your mass is the same everywhere, so your weight scales with each body's surface gravity relative to Earth's: the Moon 0.166, Mars 0.379, Jupiter 2.53 (at the cloud tops), the Sun 27.9. Enter your Earth weight in kilograms or pounds and pick a body; every body is listed in the rows.
Formula: weight = Earth weight × (g_body ÷ g_Earth)
Worked examples
| Inputs | Your weight there | Note |
|---|---|---|
| 70 kg on Mars | 26.6 | 26.6 kg |
| 70 kg on the Moon | 11.6 | 11.6 kg |
| 150 lb on Jupiter | 379.2 | 379 lb |
FAQFrequently asked questions
Does my mass change on the Moon?
No — mass is the amount of matter. Weight is the force gravity exerts on it, and the Moon's gravity is a sixth of Earth's.
Why is Jupiter only 2.5 times, when it is so massive?
Because it is also huge: gravity falls with the square of the distance from the centre, and its "surface" is far from its core.
What gravity do the gas giants use?
The value at the cloud tops (1 bar level), the conventional "surface" for a planet without one.
Would a bathroom scale really read this?
A spring scale would; a balance comparing you with reference masses would read the same everywhere.
Where these figures come from
- IUPAC — Standard atomic weights (2021 conventional values) — the molar-mass table
- NIST — CODATA 2018 fundamental physical constants — Avogadro constant, gas constant, speed of light
- NIST Chemistry WebBook — thermochemical data
- Royal Society of Chemistry — the UK chemistry professional body
Last checked: September 2026. Atomic masses are the IUPAC conventional values; constants are CODATA 2018; equations are the standard textbook forms.