EPSG:2154, RGF93 / Lambert-93
Lambert-93, the official projection of metropolitan France, used by IGN, the cadastre and French public data. Metres on the RGF93 datum.
Parameters
Read from the PROJ definition the converter above runs.
- Projection
- Lambert conformal conic
- Ellipsoid
- GRS 1980
- Shift to WGS 84
- None in this definition: the datum sits within two metres of WGS 84
- Central meridian
- 3°
- Latitude of origin
- 46.5°
- Standard parallels
- 49°, 44°
- False easting
- 700,000 m
- False northing
- 6,600,000 m
- Units
- metres
PROJ definition
+proj=lcc +lat_0=46.5 +lon_0=3 +lat_1=49 +lat_2=44 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs
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AI AgentFrequently asked questions
What is EPSG:2154?
Lambert-93, the official projection of metropolitan France, used by IGN, the cadastre and French public data. Metres on the RGF93 datum.
What are the units and axis order of EPSG:2154?
Metres, counted from a false origin of 700,000 m east and 6,600,000 m north. Most GIS software writes easting first, then northing; check the order of your source data when a point lands in the wrong place.
How do I use EPSG:2154 in QGIS?
To show the map in it: Project > Properties > CRS, search 2154. To save a layer in it: right-click the layer, Export > Save Features As, and pick EPSG:2154. Set Layer CRS only labels a file whose system is missing; it does not move the data.
Is EPSG:2154 the same as WGS 84?
Nearly: its datum sits within two metres of WGS 84, so the converter applies no shift between them. For survey-grade work, use the official transformation of the national mapping agency.