due to the differant gravitational pulls each planet has, you would weigh differantly based on what planets surface you are on. to find your weight on another planet you can multiply your weight by the conversation factor in this table. what variables affect each planets conversation factor? Planet | conversation factor | mercury: x 0.378 | venus: x 0.905 | earth: x 1 | mars: x 0.379 | jupiter: x 0.379 | saturn: x 1.066 | uranus: x 0.903 | neptune: x 1.096