Weight on Other Planets Calculator

What Is a Weight on Other Planets Calculator?

The Weight on Other Planets Calculator shows how much you would weigh on the Moon, Mars, Jupiter, and the other planets and dwarf planets. Weight is the force that gravity pulls you with, so the same mass feels different under different surface gravities. The tool also reports each result as a percentage of your Earth weight.

How the Calculation Works

Mass stays the same everywhere, but weight changes with the local gravitational acceleration:

$$W = m g$$

Because your mass is unchanged, the ratio of two weights depends only on the ratio of surface gravities:

$$W_{planet} = W_{Earth} \times \frac{g_{planet}}{g_{Earth}}$$

Earth's surface gravity is 9.81 m/s². The calculator uses values such as the Moon at 1.62, Mars at 3.71, Venus at 8.87, Jupiter at 24.79, Saturn at 10.44, Uranus at 8.69, Neptune at 11.15, and Pluto at 0.62 m/s².

Worked Example

A 70 kg person on Earth weighs 70 × 9.81 ≈ 686.7 N. On Mars, where gravity is 3.71 m/s²:

$$W_{Mars} = 70 \times \frac{3.71}{9.81} \approx 26.5 \text{ kg equivalent}$$

The same person would feel about 11.6 kg on the Moon and roughly 176.9 kg on Jupiter, or about 2.53 times their Earth weight.

Related free tools

The Work and Power Calculator relates force to energy, and the Wing Loading Calculator divides weight by wing area.