EPSG:CODE

EPSG:4304 — Voirol 1875

Geographic 2D · Algeria - north of 32°N

Export Formats

OGC WKT
GEOGCS[
    "Voirol 1875",
    DATUM[
        "Voirol_1875",
        SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],
        TOWGS84[-73,-247,227,0,0,0,0]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4304"]
]

Related Coordinate Systems

Available Transformations (2)

Transformation Source → Target Accuracy (m)
Voirol 1875 (Paris) to Voirol 1875 (1)
4811 → 4304 0
Voirol 1875 to WGS 84 (1)
4304 → 4326 999

Other CRS using Voirol 1875

Frequently Asked Questions

How do I add EPSG:4304 to GeoServer?

Add the following definition to your GeoServer configuration: 

4304=GEOGCS["Voirol 1875",DATUM["Voirol_1875",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[-73,-247,227,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4304"]]
Read the full GeoServer guide →

How do I add EPSG:4304 to PostGIS?

Add the following definition to your PostGIS configuration: 

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4304, 'EPSG', 4304, '+proj=longlat +ellps=clrk80ign +towgs84=-73,-247,227,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Voirol 1875",DATUM["Voirol_1875",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[-73,-247,227,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4304"]]');
Read the full PostGIS guide →

How do I add EPSG:4304 to MapServer?

Add the following definition to your MapServer configuration: 

PROJECTION
  "+proj=longlat"
  "+ellps=clrk80ign"
  "+towgs84=-73,-247,227,0,0,0,0"
  "+no_defs"
  "+type=crs"
END
Read the full MapServer guide →

How do I use EPSG:4304 with Proj4js?

Add the following definition to your Proj4js configuration: 

proj4.defs("EPSG:4304", "+proj=longlat +ellps=clrk80ign +towgs84=-73,-247,227,0,0,0,0 +no_defs +type=crs");
Read the full Proj4js guide →