How much would I weigh on Mars?
Data as of July 2026
26if you weigh 70 on Earth
On Mars you would weigh 0.38× what you weigh on Earth: 62% less. Your mass never changes; only the pull of gravity does. Type your own weight below (any unit) to see it change across every world.
▶ Visit Mars in 3D
On Mars: 0 (the same unit)
Why your weight changes but you don't
Weight is just gravity's pull on your mass. Step onto another world and your body is unchanged, the same atoms, the same mass, but the ground beneath pulls harder or softer, so a scale reads a different number. On Mars you weigh just over a third of your Earth weight, which is why a future astronaut could bound several metres in a single stride.
An astronaut who "weighs nothing" in orbit hasn't lost any mass at all: they are simply falling around the Earth so fast that they never hit it. Weight is about pull; mass is about stuff.
Your weight across the solar system
One number in, everywhere out: these all update live from the box above:
Feel the worlds behind the numbers: open the interactive view and stand over Mars in real scale.
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✓ Facts verified July 2026
Every figure on this page is a real, rounded value checked against primary sources. Found something out of date? See how we keep it accurate.