Weight on Other Planets Calculator
See what you would weigh on the Moon, Mars, Jupiter and other worlds based on their surface gravity.
How it works
W = m · g_body · scale reading = m · g_body ÷ 9.80665
Your mass never changes, but weight is mass times the local gravitational acceleration, so it varies from world to world. A bathroom scale is calibrated for Earth’s g₀ = 9.80665 m/s², so on another planet it effectively divides the true weight by that figure — reading a smaller number on the Moon and a larger one on Jupiter. The surface-gravity values used here are standard measured figures for each body.
Worked example
A 70 kg person on Mars (g = 3.71 m/s²) weighs 70 × 3.71 = 259.7 N. An Earth-calibrated scale would read 259.7 ÷ 9.80665 ≈ 26.5 kg — just over a third of their Earth reading.
Sources: Surface gravity — Wikipedia
Frequently asked questions
Does my mass change on another planet?
No. Mass is the amount of matter in you and is identical everywhere. Only weight — the gravitational force on that mass — changes with the local gravity.
Why would I weigh more on Jupiter?
Jupiter’s surface gravity (measured at its cloud tops) is about 24.79 m/s², roughly 2.5× Earth’s, so the same mass is pulled 2.5× harder and a scale reads about 2.5× more.
What about the Sun’s gravity?
The Sun’s surface gravity is about 274 m/s² — nearly 28× Earth’s — so a 70 kg person would "weigh" the equivalent of nearly 2 tonnes, ignoring that no one could actually stand there.
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This calculator is for educational purposes. Double-check important results before acting on them.