How big is Jupiter compared to Saturn?
1.2×wider than Saturn
Jupiter is 1.2× wider than Saturn — 139,820 km across against Saturn’s 116,460 km. By volume, about 2 Saturns would fit inside Jupiter. Jupiter has 3.3× Saturn’s mass.
▶ See Jupiter and Saturn in 3D
Side by side
Diameter
Jupiter 139,820 km · Saturn 116,460 km
Width ratio
Jupiter is 1.2× wider
Volume
2 Saturns fit inside Jupiter
Mass
Jupiter is 3.3× Saturn
Gravity (Jupiter · Saturn)
24.8 m/s² · 10.4 m/s²
Distance from Sun
5.2 AU · 9.58 AU
Jupiter is more massive than every other planet in the solar system combined — Saturn included — more than twice over.
What sets them apart
Jupiter and Saturn are the solar system’s two gas giants, and its two largest planets by a wide margin. Jupiter is only about a fifth wider, but it packs in far more — over three times Saturn’s mass, and much denser. Saturn is the odd one out among all the planets: its average density is less than water’s, so given a big enough bath it would float.
Ratios are easy to nod along to and impossible to picture. In the interactive view, switch to True scale to see Jupiter and Saturn at their honest relative sizes.
Keep going
✓ 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 Found something out of date?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.