Convert Earth equatorial radius to mile (statute) Online | Free Length Converter

Earth Equatorial Radius

The Earth's equatorial radius is the distance from the center of the Earth to the equator. It represents the Earth's radius measured along the equatorial plane.

• 
  

  Its value is approximately 6,378.1 kilometers (about 3,963.2 miles).

  
  
• 
  

  The Earth is not a perfect sphere but an oblate spheroid, so the equatorial radius is slightly larger than the polar radius.

  
  
• 
  

  This radius is important for geodesy, satellite orbits, and mapping.

  
  

Key facts:

• 
  

  Equatorial radius ≈ 6,378.1 km

  
  
• 
  

  Larger than polar radius due to Earth's flattening at the poles

  
  
• 
  

  Used in Earth sciences, navigation, and space missions

  
  

Understanding the Earth's equatorial radius helps in accurate modeling of the planet’s shape and gravitational field.

A statute mile is a unit of length commonly used in the United States and the United Kingdom. It is officially defined as 5,280 feet or 1,609.344 meters. The term "statute mile" distinguishes it from other types of miles, such as the nautical mile. The origin of the statute mile dates back to an Act of Parliament in England in 1593, which standardized the length of the mile. It is primarily used for measuring distances on land, such as in road signs, speed limits, and maps. While many countries have adopted the metric system, the statute mile remains in everyday use in a few countries. In contrast to the nautical mile, which is used for air and sea navigation, the statute mile is mainly applied in land-based contexts. It is also used to calculate speed in miles per hour (mph), especially for vehicles and road travel.