Space Is Very Big
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How big is Jupiter compared to Earth?

11.0×wider than Earth
Jupiter is 11.0× wider than Earth — 139,820 km across against Earth’s 12,742 km. By volume, about 1,321 Earths would fit inside Jupiter. It has 318× Earth’s mass, and its cloud-top gravity is 2.53× Earth’s.
See Jupiter next to Earth in 3D
▶ See Jupiter next to Earth in 3D

Side by side

Width vs Earth
11.0× wider
Volume vs Earth
1,321 Earths fit inside
Mass vs Earth
318× Earth’s mass
Cloud-top gravity
2.53× Earth (24.8 m/s²)
You’d weigh
177 kg at the cloud tops (if 70 kg here)
Diameter
139,820 km
Line up 11 Earths side by side and they’d just span Jupiter’s width — but volume grows with the cube of width, so it takes about 1,321 Earths to actually fill it.

What that actually feels like

Jupiter is so massive that the solar system is fairly described as “the Sun, Jupiter, and assorted debris”. It has no surface to stand on — just clouds all the way down into hydrogen crushed to a liquid metal. Its four largest moons, discovered by Galileo in 1610, are worlds in their own right; one of them, Europa, likely hides a saltwater ocean with more water than all Earth’s oceans combined.

Ratios on a page are easy to nod along to and impossible to picture. In the interactive view, switch to True scale to see Jupiter and Earth at their honest relative sizes — the gap is even more startling than the numbers suggest.

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 Found something out of date?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.