Geodesy Package
As of Version 7.0, geodesy functionality is built into the Wolfram Language. »
SpheroidalDistance — distance between two points on a spheroid
SphericalDistance — distance between two points on a sphere
ToAuthalicRadius — radius of the authalic sphere based on a given spheroid
GeodeticToAuthalic — coordinates of a point on an authalic sphere
ToDegrees — convert a coordinate from DMS to degrees
ToDMS — convert from degrees to DMS