Planet Weight Calculator

Example 1: Weight on Mars

Earth weight: 70 kg (154 lb)
Mars gravity: 3.71 m/s²
Ratio: 3.71 / 9.807 = 0.378
Mars weight: 70 × 0.378 = 26.5 kg (58 lb)

Example 2: Weight on Jupiter

Earth weight: 70 kg (154 lb)
Jupiter gravity: 24.79 m/s²
Ratio: 24.79 / 9.807 = 2.53
Jupiter weight: 70 × 2.53 = 177 kg (389 lb)

Example 3: Weight on the Moon

Earth weight: 80 kg (176 lb)
Moon gravity: 1.62 m/s²
Ratio: 1.62 / 9.807 = 0.165
Moon weight: 80 × 0.165 = 13.2 kg (29 lb)

Example 4: Weight on Europa

Earth weight: 70 kg
Europa gravity: 1.31 m/s²
Ratio: 1.31 / 9.807 = 0.134
Europa weight: 70 × 0.134 = 9.4 kg (21 lb)

Saturn's Low Density

Saturn's gravity is only 1.06× Earth despite being 95× more massive. Its low density (less than water) and large radius spread gravity over a larger surface area.

Mars vs Mercury

Mars and Mercury have nearly identical surface gravity (0.38× Earth). Mars is larger but less dense. Mercury is smaller but denser with large iron core.

Weight on Asteroids

Ceres (largest asteroid): 0.029× Earth
70 kg person weighs 2 kg (4.4 lb)
Easy to jump into space
Escape velocity: 0.51 km/s

Neutron Star Gravity

Surface gravity: 2 × 10¹¹ × Earth
70 kg person would weigh 14 billion kg
Spaghettification occurs
Escape velocity: 0.4× speed of light