title: Easting northing to latitude longitude
body: <p>I've got coordinates of location in easting/northing format but I need to convert it to proper lat long to center it in bing maps. Any formula or details how to convert easting/northing to lat/lon?</p>
  
  <p>EDIT: To be more specific, I need to convert SVY21 coordinates to the to WGS84</p>