Convert Suns radius to Earth polar radius Online | Free Length Converter

Sun’s Radius

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

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

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

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

  
  

Key facts:

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  Sun’s radius ≈ 696,340 km

  
  
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  Defines the size of the Sun’s visible surface

  
  
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  Critical for understanding solar structure and scale

  
  

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

Earth Polar Radius

The Earth's polar radius is the distance from the center of the Earth to the North or South Pole. It measures the Earth’s radius along its rotational axis.

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  Its value is approximately 6,356.8 kilometers (about 3,949.9 miles).

  
  
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  The Earth is an oblate spheroid, so the polar radius is slightly shorter than the equatorial radius due to the planet's flattening at the poles.

  
  
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  This measurement is crucial for geodesy, understanding Earth’s shape, and satellite navigation.

  
  

Key facts:

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  Polar radius ≈ 6,356.8 km

  
  
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  Smaller than equatorial radius by about 21.3 km

  
  
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  Important for precise Earth modeling and mapping

  
  

The difference between the polar and equatorial radius reflects the Earth’s rotation and its effect on the planet’s shape.