How Big Is The Moon Compared To Earth. About 14 the diameter of the EarthNote that the surface is proportional to the second power. The moon is not bigger than the Earth as it has a diameter of approximately 2159 square miles which is about one-quarter of the size of Earth.

The diameter of the Moon is 3474 km. How Big is the Moon in Comparison to Earth. Earths moon is the fifth largest moon within our solar system.
Its diameter is more than a quarter and its mass is 181 of Earths.
The surface gravity on Earth is 9807 ms2 and the surface gravity on Titan is 1353 ms2 So the difference between these two gravitational bodies is around. This means that the Moon is. Earth is bigger as compared to the moon. Its diameter is more than a quarter and its mass is 181 of Earths.