--- title: "How Much Do You Weigh on Other Planets? Every Planet Explained with the Math" site: ProCalc.ai type: Blog Post category: Physics domain: Science url: https://procalc.ai/blog/weight-on-other-planets-every-planet-explained markdown_url: https://procalc.ai/blog/weight-on-other-planets-every-planet-explained.md date_published: 2026-04-08 date_modified: 2026-04-12 read_time: 10 min tags: weight on planets, gravity, space, physics, science --- # How Much Do You Weigh on Other Planets? Every Planet Explained with the Math **Site:** [ProCalc.ai](https://procalc.ai) — Free Professional Calculators **Category:** Physics **Published:** 2026-04-08 **Read time:** 10 min **URL:** https://procalc.ai/blog/weight-on-other-planets-every-planet-explained > *This file is served for AI systems and search crawlers. Human page: https://procalc.ai/blog/weight-on-other-planets-every-planet-explained* ## Overview Your weight changes on every planet, but your mass stays the same. Here is the science behind surface gravity, how it varies across the solar system, and what you would feel on each world. ## Article If you weigh 160 pounds on Earth, you would weigh about 60 pounds on Mars — not because you lost mass, but because Mars has weaker gravity. On Jupiter, that same person would weigh about 381 pounds. On the surface of the Sun (if you could survive it), you would weigh over 4,000 pounds. Our  gives you the numbers for every body in the solar system. This guide explains the physics behind those numbers. Weight vs mass: the critical distinction Mass is the amount of matter in an object. It does not change regardless of where you are in the universe — your 160-pound body on Earth has the same mass on Mars, in orbit, or in the void between galaxies. Weight is the force gravity exerts on your mass. It changes with the local gravitational field. Weight = Mass x Gravitational Acceleration On Earth, gravitational acceleration is 9.8 m/s² (or 32.2 ft/s²). On Mars, it is 3.72 m/s². The ratio (3.72 / 9.8 = 0.379) tells you that anything on Mars weighs 37.9% of its Earth weight. Surface gravity across the solar system Body Surface gravity (m/s²) Gravity ratio vs Earth 160 lb person weighs Mercury 3.70 0.38 61 lbs Venus 8.87 0.91 145 lbs Earth 9.80 1.00 160 lbs Moon 1.62 0.17 27 lbs Mars 3.72 0.38 61 lbs Jupiter 24.79 2.53 405 lbs Saturn 10.44 1.07 171 lbs Uranus 8.87 0.91 145 lbs Neptune 11.15 1.14 182 lbs Pluto 0.62 0.06 10 lbs Sun 274.0 27.9 4,469 lbs What determines surface gravity Surface gravity depends on two factors: the mass of the body and the radius (distance from the center to the surface). g = GM / r² Where G is the gravitational constant, M is the body's mass, and r is its radius. This is why Saturn — much larger than Earth but less dense — has almost the same surface gravity as Earth (1.07g). It is also why Jupiter's surface gravity is 2.53g despite being 318 times Earth's mass: its enormous radius partly counteracts the mass advantage. And it is why the Sun, at 333,000 times Earth's mass, has "only" 28x Earth's surface gravity — its radius is 109 times Earth's, and that r² term reduces the effect significantly. Interesting edge cases Jupiter has no solid surface Jupiter is a gas giant. The "surface gravity" figure assumes a theoretical surface at the cloud tops. You would not stand there — you would fall through layers of increasingly dense hydrogen, eventually reaching conditions where hydrogen behaves as a metallic liquid. The pressure would crush any human well before reaching that depth. Saturn is less dense than water Saturn's average density is 0.69 g/cm³ — lower than water. If you had an ocean large enough, Saturn would float in it. Despite being 95 times Earth's mass, its low density makes its surface gravity only slightly higher than Earth's. Neutron stars: extreme gravity A neutron star has roughly 1-2 times the Sun's mass compressed into a sphere about 10 miles in diameter. Surface gravity is approximately 10^11 to 10^12 times Earth's. A 160-pound person would weigh on the order of 10 trillion pounds on a neutron star's surface — and would be instantly crushed by tidal forces long before arrival. What would reduced gravity feel like on Mars? At 38% of Earth's gravity, Mars would feel strange in ways that are not immediately obvious. You could jump more than twice as high. Objects would fall in slow motion. Carrying a 100-pound pack would feel like carrying 38 pounds. But your muscles, heart, and bones — adapted for Earth's gravity — would atrophy in ways that make long-term habitation a serious medical challenge. NASA research indicates bone density loss of 1-2% per month in microgravity, even with aggressive countermeasures. Calculate your weight on every solar system body with the . --- ## Reference - **Blog post:** https://procalc.ai/blog/weight-on-other-planets-every-planet-explained - **This markdown file:** https://procalc.ai/blog/weight-on-other-planets-every-planet-explained.md ### AI & Developer Resources - **LLM index:** https://procalc.ai/llms.txt - **LLM index (full):** https://procalc.ai/llms-full.txt - **MCP server:** https://procalc.ai/api/mcp - **Developer docs:** https://procalc.ai/developers ### How to Cite > ProCalc.ai. "How Much Do You Weigh on Other Planets? Every Planet Explained with the Math." ProCalc.ai, 2026-04-08. https://procalc.ai/blog/weight-on-other-planets-every-planet-explained ### License Content © ProCalc.ai. Free to reference and cite. Do not republish in full without attribution.