How Big Is The Moon Compared To Earth. The mass of the moon which is the Earths only natural satellite is about 74 x 10 22 kg. The Moon has a diameter of 2159 miles 3476 kilometers and is about one-quarter the size of Earth.
The moons mass is 735 x 10 22 kg about 12 percent of Earths mass. The Moon weighs about 80 times less than Earth. 109 times the diameter of the EarthMoon.
3474 The diameter of the Moon in kilometres.
The Moons radius is only 27 of our Earths radius. Nice to have as it lights up the night sky lifts the tides to wash out our estuaries and a reasonable timepiece for calculating months with an occasional solar eclipse to astound everyone. Moon has always evoked the imaginations of humans in several ways. But we can make some comparisons with things on Earth to get a measure of the Moon.
