How Much Would You Weigh on Saturn?

Saturn is huge but less dense than you'd expect — see your weight on the ringed planet.

Frequently asked questions

Why is Saturn's gravity so similar to Earth's?

Saturn has 95 times Earth's mass but 9.5 times Earth's radius. Mass squashes gravity up; radius drops it sharply. The two effects cancel almost perfectly, giving Saturn a "cloud-top" gravity just 6.5% stronger than Earth's — the closest analogue in the solar system.

Could Saturn float in water?

Famously, yes — if you had a bath big enough. Saturn's average density is 0.687 g/cm³, less than water at 1 g/cm³. It's the least dense planet in the solar system. The reason is that it's mostly hydrogen and helium, the two lightest elements.

Are Saturn's rings solid?

No — the rings are billions of individual particles of mostly water ice, ranging from dust grains to chunks the size of houses. The main rings span 7,000 to 80,000 km out from the planet but average only 10–100 metres thick.

How many moons does Saturn have?

At least 146 confirmed as of 2024, making it the most moon-rich planet in the solar system. Titan, the largest, is the only moon in the solar system with a thick atmosphere and liquid lakes on its surface (of methane and ethane).

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How much would you weigh on Saturn?

Saturn\'s "surface" gravity is 10.44 m/s², or 106.5% of Earth\'s. A 75 kg adult Earth weight becomes 79.9 kg Saturn weight — almost identical. Saturn has the most Earth-like gravity of any planet in the solar system, which is genuinely surprising given that it\'s 95 times Earth\'s mass.

The most Earth-like gravity in the solar system

If gravity were the only thing that mattered, Saturn would be the easiest planet to visit. The reason its surface gravity is so close to Earth\'s is geometric: Saturn is huge in mass (95×) but also huge in radius (9.5×). Surface gravity scales as mass divided by radius squared, so the two factors nearly cancel out, leaving you with the gentlest gas giant.

Saturn is less dense than water

Saturn\'s most famous physical property — beyond its rings — is that it\'s less dense than water. Average density: 0.687 g/cm³, compared to 1.0 g/cm³ for water and 5.5 g/cm³ for Earth. If you had a swimming pool big enough to hold a planet, Saturn would float. The reason is that it\'s mostly hydrogen and helium gas, the two lightest elements in the universe, with only a small rocky core at the centre.

The rings: what they actually are

Saturn\'s rings aren\'t solid plates. They\'re billions of separate particles — mostly water ice with traces of rock — ranging from dust grains to boulders the size of small houses. The main ring system spans roughly 7,000 to 80,000 km out from the planet\'s cloud tops. But despite the enormous diameter, the rings are unimaginably thin: typically 10 to 100 metres thick. That\'s a structure 280,000 km across and a few hundred metres deep — it would be like a CD-ROM the size of Manhattan.

What you\'d actually experience

You couldn\'t stand on Saturn — like Jupiter, it has no solid surface. The "cloud tops" we use for gravity calculations are the visible upper atmosphere. Below that, hydrogen gas gradually becomes denser and hotter until, somewhere around 30,000 km down, it transitions to liquid metallic hydrogen. Wind speeds at the equator reach 1,800 km/h — five times faster than anything on Earth.

Saturn vs Jupiter vs Earth

Saturn is the cosy planet of the gas giants. Compare its near-Earth gravity to Jupiter\'s crushing 252%, the Moon\'s feathery 16.5%, or Mars\'s breezy 37.9%. See the full picture on the solar-system weight calculator.