It's an easy, two-step process to convert shapefiles in ESRI's .shp file format to KML with ExpertGPS Pro. View your GIS points, polylines, and polygons over Google Earth's color imagery, and create KML files from your .shp files to share with clients or to publish online.
The first step in converting .shp to KML is to Import SHP Data, using Import on the File menu. ExpertGPS Pro automatically reprojects your .shp files from UTM, state plane coordinates, or any other projection into KML's native format (latitude and longitude in decimal degreees, in WGS84 datum).
To finish the SHP-KML conversion, press F7, the View in Google Earth command, and ExpertGPS will convert your SHP data to KML and automatically launch Google Earth to view your KML data. You can also click Export on the File menu to convert your shapefiles to KML.