what size is uranus?
Uranus is the third largest planet in the Solar System. It has a diameter of 31,765 miles or 51,118 kilometers which is about four times the diameter of Earth.Uranus has a volume which is about 63 times the volume of Earth which means that 63 Earths can fit inside Uranus.1  Javascript must be enabled to use Cool Cosmos.2  Learn how.t has a diameter of 31,765 miles or 51,118 kilometers which is about four times the diameter of Earth. Uranus has a volume which is about 63 times the volume of Earth which means that 63 Earths can fit inside Uranus. 1  Javascript must be enabled to use Cool Cosmos.