# ogr2ogr > Convert Simple Features data between file formats. > More information: . - Convert a Shapefile into a GeoPackage: `ogr2ogr -f GPKG {{output}}.gpkg {{input}}.shp` - Change coordinate reference system of a GeoPackage from `EPSG:4326` to `EPSG:3857`: `ogr2ogr -s_srs {{EPSG:4326}} -t_srs {{EPSG:3857}} -f GPKG {{output}}.gpkg {{input}}.gpkg` - Convert a CSV file into a GeoPackage, specifying the names of the coordinate columns and assigning a coordinate reference system: `ogr2ogr -f GPKG {{output}}.gpkg {{input}}.csv -oo X_POSSIBLE_NAMES={{longitude}} -oo Y_POSSIBLE_NAMES={{latitude}} -a_srs {{EPSG:4326}}` - Load a GeoPackage into a PostGIS database: `ogr2ogr -f "PostgreSQL" PG:dbname="{{database_name}}" {{input}}.gpkg` - Clip layers of a GeoPackage file to the given bounding box: `ogr2ogr -spat {{min_x}} {{min_y}} {{max_x}} {{max_y}} -f GPKG {{output}}.gpkg {{input}}.gpkg`