Your Weight and Age on Other Planets

Source: National Aeronautics and Space Administration (NASA)

To find what you would weigh in the gravitational field of another planet, multiply your weight on Earth times the gravitation factor listed in the table below.

Example: I weigh 90 pounds on Earth. On Mercury, I would weigh:

90 pounds X 0.38 = 34.2 pounds

On Neptune, I would weigh:

90 pounds X 1.12 = 100.8 pounds

To find your age according to the length of another planet's year, divide your age in Earth years by the period of revolution (in Earth years) of the planet listed in the table below.

Example: I am 13 Earth years old. In Mercury's orbit, I would be:

13 years ÷ 0.241 = 54 years old

In Neptune's orbit, I would be:

13 years ÷ 164.8= 0.079 years old

Celestial ObjectGravitational Pull
(Compared to Earth)
Period of Revolution
(Compared to Earth)
Mercury0.380.241 Earth years
Venus0.910.615 Earth years
Earth1.01.0 Earth year
Mars0.381.88 Earth years
Jupiter2.3611.9 Earth years
Saturn0.9129.5 Earth years
Uranus0.8984.0 Earth years
Neptune1.12164.8 Earth years
Pluto0.06 (?)248.5 Earth years

The PlanetsThe Solar SystemHow the Planets and Satellites Got Their Names

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