Geometric Altitude Calculator

Geometric altitude, also referred to as orthometric altitude or height above mean sea level (MSL), is a measure of an object’s elevation above a specified reference surface, typically the Earth’s mean sea level. It is measured along a straight line from a point on or above the Earth’s surface to a defined reference point, usually using geometric principles. The formula to calculate geopotential altitude as follows:

Where:

  • is the geometric altitude (units: meters).
  • is the radius of the Earth (units: meters).
  • is the geopotential altitude (units: meters).

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