Mars
About 38% of Earth weight
A 150 lb Earth reading becomes about 57 lb on Mars. A 70 kg Earth reading becomes about 26.6 kg on a Mars-calibrated scale.
Solar system · Question
Mars weight calculator: your weight on every planet
On Mars, a scale would read about 38% of your Earth weight. Enter your weight once to compare Mars with all eight planets — your mass stays the same, but local gravity changes what the scale reads.
Visual model
Your weight, everywhere.
on Earth
Mercury
17.1 kg
0.38× Earth gravity
Venus
41.0 kg
0.91× Earth gravity
Earth
45.0 kg
1.00× Earth gravity
Mars
17.1 kg
0.38× Earth gravity
Jupiter
113.8 kg
2.53× Earth gravity
Saturn
48.2 kg
1.07× Earth gravity
Uranus
40.5 kg
0.90× Earth gravity
Neptune
51.3 kg
1.14× Earth gravity
Quick answers
Planet weight calculator: the useful numbers first.
These are relative scale readings using Earth = 1.00. The calculator above updates the same ratios for any kg or lb value you enter.
Jupiter
About 2.53× Earth weight
Jupiter has the strongest surface gravity of the eight planets in this comparison, even though its huge radius keeps the multiplier far below its mass ratio.
Formula
Earth reading × gravity ratio
For a familiar scale reading, multiply your Earth value by the planet's gravity relative to Earth. Mass itself does not change when you move between planets.
What's simplified
Why isn't this just "bigger planet, more gravity"?
01
Density matters too
Saturn is bigger than Earth but less dense than water — its surface gravity (1.07×) is barely more than Earth's, while much smaller Mercury and much larger Neptune land close together too.
02
"Surface" is fuzzy on gas giants
Jupiter, Saturn, Uranus, and Neptune have no solid surface — these numbers use the gravity at the visible cloud tops.
Misconception check
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Go deeper
Keep exploring.
Next in this series →
Planetary temperatures ↗
Why Venus is hotter than Mercury.
Orbits
Why don't planets fall into the Sun?
Gravity's other job: keeping planets in orbit instead of pulling them straight in.
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