Google Map Longitude Latitude Distance

(using google maps api v3)
Get the approximate distance between two points on Google Maps.
Formula Used Download Code
Move Red Marker:
Long.
(e.g. 121.058805)
Lat.
(e.g. 14.552797)
Move Blue Marker:
Long.
(e.g. 120.994260)
Lat.
(e.g. 14.593999)
Click on the map below change marker positions
Click on the marker to make it active
 Approximate Distance: 0.00