Earth's Dimensions

The Earth is not a perfect sphere, so its diameter varies slightly depending on where it's measured.

• Equatorial Diameter: The diameter across the Earth at the Equator is approximately 12,756 kilometers (7,926 miles).
• Polar Diameter: The diameter measured from pole to pole is approximately 12,714 kilometers (7,900 miles).

For most general purposes, the average diameter of Earth is often cited as approximately 12,742 kilometers (7,918 miles).