EPSG:27572, NTF (Paris) / Lambert zone II étendu
Lambert II étendu, the old French national grid on the NTF datum with the Paris meridian, still found in data made before 2000. Lambert-93 (EPSG:2154) replaced it.
Parameters
Read from the PROJ definition the converter above runs.
- Projection
- Lambert conformal conic
- Ellipsoid
- Clarke 1880 (IGN)
- Shift to WGS 84
- 3 parameters
- Prime meridian
- Paris
- Central meridian
- 0°
- Latitude of origin
- 46.8°
- Scale factor
- 0.99987742
- False easting
- 600,000 m
- False northing
- 2,200,000 m
- Units
- metres
PROJ definition
+proj=lcc +lat_1=46.8 +lat_0=46.8 +lon_0=0 +k_0=0.99987742 +x_0=600000 +y_0=2200000 +a=6378249.2 +b=6356515 +towgs84=-168,-60,320,0,0,0,0 +pm=paris +units=m +no_defs
AI Agent for QGIS
Got a list of coordinates? Ask AI Agent in QGIS to put them on a map, in the right projection.
Free plan, no credit card.
AI AgentFrequently asked questions
What is EPSG:27572?
Lambert II étendu, the old French national grid on the NTF datum with the Paris meridian, still found in data made before 2000. Lambert-93 (EPSG:2154) replaced it.
What are the units and axis order of EPSG:27572?
Metres, counted from a false origin of 600,000 m east and 2,200,000 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:27572 in QGIS?
To show the map in it: Project > Properties > CRS, search 27572. To save a layer in it: right-click the layer, Export > Save Features As, and pick EPSG:27572. Set Layer CRS only labels a file whose system is missing; it does not move the data.
Is EPSG:27572 the same as WGS 84?
No. It sits on the Clarke 1880 (IGN) ellipsoid and needs a 3-parameter shift to reach WGS 84, which the converter applies. Skipping it moves points by tens to hundreds of metres.