Surface Gravity Calculator

Want to know what the surface gravity is on any celestial object? You just need to know it's mass in terms of Earth masses (e.g. Earth = 1, Venus = 0.815, Mars = 0.107 etc.) and it's radius. This online calculator will do the rest.

Radius of your planet	km	e.g. Earth=6378
Planetary Mass		express in Earth masses = e.g. Earth=1, Venus=0.815

Result:

The result shows the gravity in terms of Earth gravities (1 Earth gravity = 1 gravity (aka gee)).
A result of 1 gravity = 1 Earth gravity, or put another way 100% Earth gravity
A result of 1.5 gravity = 150% Earth gravity