The average center-to-center distance from the Earth to the Moon is 238,857 miles (384,403 kilometers), about thirty times the diameter of the Earth. The average distance between the Moon and the Earth is 384,403 kilometers (238,857 miles).
The moon's orbit is not a perfect circle, it is an ellipse; So the distance isn't constant ... there is a minimum and a maximum. The distance fluctuates between 363,104 kilometers and 405,696 kilometers (225,622 to 252,088 miles) due to the eccentricity of the Moon's orbit.