Jupiter vs Earth
11.21× wider
Jupiter's diameter is about 11.21 Earth diameters. Because volume grows with the cube of diameter, its sphere-model volume is about 1,321 Earths.
Solar system · Question
Interactive planet size comparison
Compare any two planets on the same diameter scale. Start with Earth vs Jupiter, Mars, or Venus, then see how a modest diameter difference becomes a much larger volume difference.
Visual model
Pick two planets to compare.
vs
Earth
Jupiter
11.21×Jupiter's equatorial diameter vs Earth's
1321×Jupiter's volume vs Earth's
1321Earths that fit inside Jupiter by volume
Quick answers
Popular planet size comparisons.
These common comparisons are useful anchors before trying your own pair above.
Mars vs Earth
0.53× Earth's diameter
Mars is just over half as wide as Earth, but only about 15% of Earth's volume.
Venus vs Earth
0.95× Earth's diameter
Venus is genuinely close to Earth in size even though its atmosphere and surface conditions are radically different.
What's simplified
Two things this comparison leaves out.
01
Mass isn't shown
Volume ratio is not the same as mass ratio — Saturn is less dense than water, so it has less mass than its volume alone would suggest.
02
Circles, not spheres
The circles compare NASA equatorial diameters. Volume ratios use NASA mean-radius values, so flattened gas giants are not treated as perfect spheres based on equatorial width alone.
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Distance scale ↗
Real distances vs compressed diagram.
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Size is only half the story — see why distance can't be shown accurately at the same time.