Jupiter
Jupiter is the biggest planet in the Solar System. Its diameter is 142,984 km. This is eleven times larger than the diameter of  Earth. Jupiter is twice as massive as all the other planets in the Solar System put together. Jupiter is 318 times as massive as Earth. The volume of Jupiter is 1,317 times the volume of Earth. In other words, 1,317 Earth-sized objects could fit inside it. It gives off more heat than it gets from the Sun.