Computing Distances between Latitudes/Longitudes in One Step

Stephen P. Morse, San Francisco

From:

degrees minutes seconds Latitude . North South of the Equator Longitude . East West of Greenwich

decimal Latitude Longitude

To:

degrees minutes seconds Latitude . North South of the Equator Longitude . East West of Greenwich

decimal Latitude Longitude

Distance (as the crow flies) is 0.00 miles -- spherical earth
Distance (as the crow wobbles) is 0.00 miles -- ellipsoidal earth

Distance computations based on a spherical earth use the formula appearing at mathforum.com
Distance calculations based on an ellipsoidal earth use the formula developed by Thaddeus Vincenty

© Stephen P. Morse, 2008