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 across
Mean diameter · approximate
A little perspective
Jupiter is about 1.2 times larger on this measurement.
Jupiter: Jupiter is a giant planet composed mainly of hydrogen and helium, orbiting the Sun beyond the asteroid belt.
Measurements, assumptions & sources +
Saturn
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-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.
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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
For comparison, this page uses mean diameter. This is labelled approximate; the central value is useful for comparison, while real values or measurement solutions can vary.
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 named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Saturn 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
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · SpaceUranus50,720 kmUranus is an ice giant planet with a blue-green atmosphere, orbiting the Sun on its side.
Around the same scale · SpaceProxima Centauri214,300 kmProxima Centauri is a red dwarf star and the closest known star to the Sun.
Nearest higher value · SpaceJupiter139,800 kmJupiter 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.