Weight on Other Planets Calculator
Find out what you'd weigh on the Moon, Mars or other planets based on your weight on Earth and each planet's gravity, free in your browser.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter your weight on Earth.
- Read your weight elsewhere.
How it works
Weight scales with each body's surface gravity relative to Earth (Moon 0.165, Mars 0.379, etc.).
Worked example
80 kg on Earth. ≈ 13.2 kg on the Moon, 30.3 kg on Mars.
Common mistakes
- Thinking your mass changes — only weight (the force of gravity) does.
- Expecting Jupiter's 'surface' — the figure uses its cloud-top gravity.
Frequently asked questions
Does my mass change on the Moon?
No — mass is constant. Only your weight (mass × local gravity) changes.
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Explore more in Astronomy & Navigation.
Cite this tool
Zerdly. (2026). Weight on Other Planets Calculator. Retrieved from https://www.zerdly.com/tools/weight-on-other-planets-calculator/
Tip: Enter any known values to calculate the remaining results.
Designed to run locally in your browser. Tool inputs are not intentionally stored by Zerdly unless stated otherwise.