Convert Suns radius to mile Online | Free Length Converter

Sun’s Radius

The radius of the Sun is the distance from its center to its surface (photosphere).

• 
  

  It is approximately 696,340 kilometers (about 432,685 miles).

  
  
• 
  

  The Sun is a nearly perfect sphere of hot plasma, and this radius defines its visible "surface."

  
  
• 
  

  The Sun’s radius is about 109 times the radius of Earth.

  
  

Key facts:

• 
  

  Sun’s radius ≈ 696,340 km

  
  
• 
  

  Defines the size of the Sun’s visible surface

  
  
• 
  

  Critical for understanding solar structure and scale

  
  

Knowing the Sun’s radius helps astronomers model solar phenomena and compare the Sun with other stars.