The diameter of Jupiter is approximately 11.2 times bigger than Earth’s diameter. Jupiter’s volume, surface area and mass are also large when compared to those of the Earth.
For example, Jupiter’s volume is 1,321 times the Earth’s volume, and its mass is 317.8 times the Earth’s mass. Likewise, the surface area of Jupiter is 121.9 times bigger than the Earth's.
In the solar system, Jupiter is the biggest planet. Because it is a gas giant, its composition consists mainly of the elements hydrogen and helium. As an outer planet, Jupiter is cold and windy. Wind speeds can reach higher than 400 miles per hour. Jupiter’s most famous feature is the Great Red Spot, which is a massive storm. Jupiter has three rings around it and many moons, including Europa and Ganymede.