Distance Between Two GEO Locations [duplicate]

Question

I have two GEO locations. How can I calculate the distance between them?

Answer 1

If you use the Google Maps API v3 you can calculate the distance as follows:

Include the Google Maps JavaScript file with the geometry library:

http://maps.google.com/maps/api/js?sensor=true&libraries=geometry

The distance can be measured now by using the computeDistanceBetween() method:

var from = new google.maps.LatLng(49.004, 8.456);
var to   = new google.maps.LatLng(49.321, 8.789);
var dist = google.maps.geometry.spherical.computeDistanceBetween(from, to);