See your weight and age on Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto and the Moon, using NASA gravity and orbital periods.
The weight a scale shows is the force with which a world pulls on you, and it depends on surface gravity. Here the weight on each body is your Earth weight multiplied by the NASA gravity ratio: Mercury 0.378, Venus 0.907, Moon 0.166, Mars 0.377, Jupiter 2.36, Saturn 0.916, Uranus 0.889, Neptune 1.12 and Pluto 0.071. A 70 kg person would read about 11.6 kg on the Moon, 26.4 kg on Mars and 165.2 kg on Jupiter. Many sites copy 2.53 for Jupiter; the NASA table gives 2.36, which includes the effect of rotation and holds at the 1 bar level of the atmosphere, and that is what this tool applies. Age uses the orbital period, the time a planet takes to go around the Sun: 88 days for Mercury, 224.7 for Venus, 687 for Mars, 4,331 for Jupiter, 10,747 for Saturn, 30,589 for Uranus, 59,800 for Neptune and 90,560 for Pluto. Someone who is 30 is about 124.5 Mercury years old and 15.9 Mars years old, and has not yet completed one lap around Uranus. The Earth year is the tropical year, 365.2422 days. Mass does not change: it is the weight that rises or falls.
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<a href="https://jkit.tools/en/tools/weight-on-other-planets">Weight and Age on Other Planets</a>
These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
Mass is the amount of matter in a body and does not change from place to place. Weight is the force of gravity on that mass: W = m × g. When someone says they weigh 70 kg, that number is mass, read on a scale calibrated for Earth gravity. On the Moon the same person still has 70 kg of mass, but the scale would read about 11.6 kg.
0.38× Earth gravity (3.7 m/s²)
Weight force: 259 N
Age: 124.5 years
Next birthday in 43 days
0.91× Earth gravity (8.9 m/s²)
Weight force: 623 N
Age: 48.8 years
Next birthday in 54 days
1.00× Earth gravity (9.8 m/s²)
Weight force: 686 N
Age: 30.0 years
0.17× Earth gravity (1.6 m/s²)
Weight force: 114 N
Age: 30.0 years
Next birthday in 366 days
0.38× Earth gravity (3.7 m/s²)
Weight force: 259 N
Age: 15.9 years
Next birthday in 35 days
2.36× Earth gravity (23.1 m/s²)
Weight force: 1,620 N
Age: 2.53 years
Next birthday in 2,036 days
0.92× Earth gravity (9.0 m/s²)
Weight force: 629 N
Age: 1.02 years
Next birthday in 10,537 days
0.89× Earth gravity (8.7 m/s²)
Weight force: 610 N
Age: 0.36 years
Next birthday in 19,632 days
1.12× Earth gravity (11.0 m/s²)
Weight force: 769 N
Age: 0.18 years
Next birthday in 48,843 days
0.071× Earth gravity (0.7 m/s²)
Weight force: 49 N
Age: 0.12 years
Next birthday in 79,603 days
What changes from one body to another is weight (the pull of gravity on you). Your mass, the amount of matter in your body, is the same everywhere. The kg and lb values show what a scale would read.
Source: NASA Planetary Fact Sheet. For the gas giants, gravity is given at the 1 bar level of the atmosphere, not on a solid surface. The Moon orbits the Sun together with Earth, so its age equals the Earth age. The jump assumes the same takeoff speed and ignores clothing, air and posture.