Lat/long (Geodetic alias)

Passes geodetic coordinates through unchanged.


latlon, latlong, lonlat, longlat



Input type

Geodetic coordinates

Output type

Geodetic coordinates


Can not be used with the proj application.


No parameters will affect the output of the operation if used on it's own. However, the parameters below can be used in a declarative manner when used with cs2cs or in a transformation pipeline .


The name of a built-in ellipsoid definition.

See Ellipsoids for more information, or execute proj -le for a list of built-in ellipsoid names.

Defaults to "GRS80".


Declare the datum used with the coordinates. Available options are: WGS84, GGRS87, NAD38, NAD27, potsdam, carthage, hermannskogel, ire65, nzgd49, OSGB336.


The +datum option is primarily available to support the legacy use of PROJ.4 strings as CRS descriptors and should in most cases be avoided.


A list of three or seven comma separated Helmert parameters that maps the input coordinates to the WGS84 datum.