Earth Ellipsoid Parameters Reference

This reference lists most commonly used ellipsoids with associated geometric parameters.

Ellipsoid


Ellipsoid Parameters
  • Id code:
  • Semi-major axis A, m:
  • Semi-minor axis B, m:
  • Flattening:
  • Inversed flattening:

Related links

Great circle distance and bearing calculation

Destination calculation

NAD27 NAD83 conversion