EPSG:9794 RGF93 v2b / Lambert-93
Projected system (Lambert Conic Conformal (2SP)) in use: France. The full definition below, and conversion in one click.
| Code | EPSG:9794 |
|---|---|
| Name | RGF93 v2b / Lambert-93 |
| Type | Projected system — Lambert Conic Conformal (2SP) |
| Area of use |
France France - onshore and offshore, mainland and Corsica (France métropolitaine including Corsica). |
| Bounds | W -9,86° · S 41,15° · E 10,38° · N 51,56° |
| Countries | France |
| Datum | Reseau Geodesique Francais 1993 v2b |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:9782 — RGF93 v2b |
| Unit | metre (X east, Y north) |
| Transformation to WGS 84 | RGF93 v2b to WGS 84 (1) (EPSG:9792) — accuracy 1 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of false origin | 46.5 | degree |
| Longitude of false origin | 3 | degree |
| Latitude of 1st standard parallel | 49 | degree |
| Latitude of 2nd standard parallel | 44 | degree |
| Easting at false origin | 700000 | metre |
| Northing at false origin | 6600000 | metre |
proj4 definition
+proj=lcc +lat_0=46.5 +lon_0=3 +lat_1=49 +lat_2=44 +x_0=700000 +y_0=6600000 +ellps=GRS80 +units=m +towgs84=0,0,0 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:9794.
WKT (ESRI format, the .prj content)
PROJCS["RGF93_v2b_Lambert-93",GEOGCS["RGF93_v2b",DATUM["Reseau_Geodesique_Francais_1993_v2b",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",700000.0],PARAMETER["False_Northing",6600000.0],PARAMETER["Central_Meridian",3.0],PARAMETER["Standard_Parallel_1",49.0],PARAMETER["Standard_Parallel_2",44.0],PARAMETER["Latitude_Of_Origin",46.5],UNIT["Meter",1.0]]Other systems — France
- EPSG:9777RGF93 v2
- EPSG:9779RGF93 v2 (lon-lat)
- EPSG:9782RGF93 v2b
- EPSG:9784RGF93 v2b (lon-lat)
- EPSG:9793RGF93 v2 / Lambert-93
- EPSG:9822RGF93 v2 / CC42
- EPSG:9823RGF93 v2 / CC43
- EPSG:9824RGF93 v2 / CC44
- EPSG:9825RGF93 v2 / CC45
- EPSG:9826RGF93 v2 / CC46
- EPSG:9827RGF93 v2 / CC47
- EPSG:9828RGF93 v2 / CC48
- EPSG:9829RGF93 v2 / CC49
- EPSG:9830RGF93 v2 / CC50
- EPSG:9842RGF93 v2b / CC42
- EPSG:9843RGF93 v2b / CC43
- EPSG:9844RGF93 v2b / CC44
- EPSG:9845RGF93 v2b / CC45
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.