GIS, GPS, Map Files (33 file types)
GIS, GPS, Map Files - Types & Formats of file extensions
Where am I? Which way do I go? Isn’t GPS amazing? The GIS (Geographic Information Systems) files are what make it all work. GIS files can contain maps, sav4ed routes, and waypoints.
The great things about GIS files is that they are saved in open formats so that files can be transferred between GPS devices and computer systems. Popular map file extentions are .KML, .ADF, .MXD.