An equator is an imaginary line around the middle of a planet or other celestial body. ... The Earth's diameter at the Equator is about 12,756 kilometers (7,926 miles). At the poles, the diameter is about 12,714 kilometers (7,900 miles). The Earth's equatorial bulge is about 43 kilometers (27 miles).

What is equatorial diameter?

The Earth's diameter at the Equator is about 12,756 kilometers (7,926 miles). ... The equatorial bulge means that people standing at sea level near the poles are closer to the center of the Earth than people standing at sea level near the Equator.

What is the difference between diameter and equatorial diameter?

The difference in axes is about 1 part in 300. This means the earth's equatorial diameter is 7,926 miles, while its polar diameter is 7,900 miles. Although the difference between equatorial and polar diameters is only 26 miles, the oblate shape of the earth complicates geographical matters.