Saturn
Saturn is a giant planet made mostly of hydrogen and helium, distinguished by its extensive ring system.
How big is it?
116,500 km · mean diameter
Mean diameter · approximate
A little perspective
Saturn vs Jupiter: diameter comparison
The mean diameter of Jupiter is about 1.2 times the mean diameter of Saturn.
Saturn is a giant planet made mostly of hydrogen and helium, distinguished by its extensive ring system.
Jupiter is a giant planet composed mainly of hydrogen and helium, orbiting the Sun beyond the asteroid belt.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
Measurements, assumptions & sources +
Saturn
Mean diameter: 116,500 km; approximate.
Mean-radius spherical model for Saturn; actual shape is not perfectly spherical. Gravity refers to a conventional atmospheric level, not solid ground.
NASA JPL — planetary physical parameters
The marked mean diameter is calibrated. Unmeasured illustration details are representative.
Jupiter
Mean diameter: 139,800 km; approximate.
Mean-radius spherical model for Jupiter; actual shape is not perfectly spherical. Gravity refers to a conventional atmospheric level, not solid ground.
NASA JPL — planetary physical parameters
The marked mean diameter is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Choose a suggestion to redraw the comparison, or open its page to learn what it is.
Why this measurement?
Why we use 116,500 km
We compare the mean diameter of Saturn. This is an estimate; check the notes for its rounding and uncertainty.
Mean-radius spherical model for Saturn; actual shape is not perfectly spherical. Gravity refers to a conventional atmospheric level, not solid ground.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 116,500 km | Not recorded | approximate | |
| 58,230 km | Not recorded | approximate | |
| 365,900 km | Not recorded | derived | |
| 4.261 × 10¹⁰ km² | Not recorded | derived | |
| 8.271 × 10¹⁴ km³ | Not recorded | derived | |
| 95.16 M⊕ | Not recorded | approximate | |
| 10.44 m/s² | Not recorded | approximate | |
| 9.583 AU | Not recorded | rounded orbital anchor | |
| 34,850 km/h | Not recorded | rounded orbital anchor |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valuePlanets, moons and spaceUranus50,720 kmMean diameterUranus is an ice giant planet with a blue-green atmosphere, orbiting the Sun on its side.
Around the same scalePlanets, moons and spaceProxima Centauri214,300 kmDiameterProxima Centauri is a red dwarf star and the closest known star to the Sun.
Nearest higher valuePlanets, moons and spaceJupiter139,800 kmMean diameterJupiter is a giant planet composed mainly of hydrogen and helium, orbiting the Sun beyond the asteroid belt.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- NASA JPL — planetary physical parametersMean radii and masses. Spherical area and volume here are derived from mean radius. This atlas rounds for scale comparison.
- NASA — Planet CompareConventional surface gravities; giant-planet values refer to an atmospheric reference level. Earth uses standard gravity, 9.80665 m/s².
- Defined examples — our methodology
More ways to see it
Curated comparisons
There’s always another scale
Follow your curiosity.
SpaceEarth12,740 kmEarth is the rocky planet on which we live and the third planet from the Sun.
SpaceMoon3,475 kmThe Moon is Earth’s natural satellite and the brightest large object in Earth’s night sky.SpaceJupiter139,800 kmJupiter is a giant planet composed mainly of hydrogen and helium, orbiting the Sun beyond the asteroid belt.
SpaceSun1,391,000 kmThe Sun is the star at the centre of the Solar System.SpaceUranus50,720 kmUranus is an ice giant planet with a blue-green atmosphere, orbiting the Sun on its side.
SpaceNeptune49,240 kmNeptune is an ice giant planet with a deep blue atmosphere, orbiting the Sun beyond Uranus.SpaceProxima Centauri214,300 kmProxima Centauri is a red dwarf star and the closest known star to the Sun.
SpaceEarth–Moon distance384,400 kmThe Earth–Moon distance is the average space between the centres of the Earth and the Moon.