SHP to KML Converter is a free online GIS application. You can also try many other formats for converting. Also this tool allow to change a spatial reference system for the output file.... qix mif, mid tab, map, id, dat gdb, gdbtable, gdbtablx gml osm...ZIP, MIF, MID, TAB, MAP, ID, DAT, JSON, GEOJSON, TOPOJSON, OSM...