Jupiter is the largest planet in our Solar System. It has an average radius of about 69,911 kilometers (43,440.7 miles), making its diameter roughly 139,822 kilometers (about 88,846 miles at the equator due to its oblate shape) - over 11 times wider than Earth’s diameter
. Its volume is about 1,321 times that of Earth, meaning more than 1,300 Earths could fit inside Jupiter
. In terms of mass, Jupiter is about 318 times as massive as Earth and more than twice the mass of all the other planets in the Solar System combined
. Because of its rapid rotation (a day on Jupiter is about 9.9 hours), Jupiter is not a perfect sphere but an oblate spheroid, with the equatorial diameter larger than the polar diameter (about 142,984 km vs. 133,708 km)
. In summary, Jupiter is a gas giant with:
- Radius: ~69,911 km (mean)
- Diameter: ~139,822 km (mean), ~142,984 km (equatorial)
- Diameter about 11 times that of Earth
- Volume ~1,321 times Earth’s volume
- Mass ~318 times Earth’s mass
This immense size makes Jupiter a dominant presence in the Solar System, with a size about a tenth that of the Sun’s radius
