EPSG:21500 — BD50 (Brussels) / Belge Lambert 50

Projected · Belgium - onshore

Export Formats

OGC WKT

PROJCS[
    "BD50 (Brussels) / Belge Lambert 50",
    GEOGCS[
        "BD50 (Brussels)",
        DATUM[
            "Reseau_National_Belge_1950_Brussels",
            SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],
            AUTHORITY["EPSG","6809"]
        ],
        PRIMEM["Brussels",4.367975,AUTHORITY["EPSG","8910"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4809"]
    ],
    PROJECTION["Lambert_Conformal_Conic_2SP"],
    PARAMETER["latitude_of_origin",90],
    PARAMETER["central_meridian",0],
    PARAMETER["standard_parallel_1",49.8333333333333],
    PARAMETER["standard_parallel_2",51.1666666666667],
    PARAMETER["false_easting",150000],
    PARAMETER["false_northing",5400000],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","21500"]
]

WKT2

PROJCRS[
    "BD50 (Brussels) / Belge Lambert 50",
    BASEGEOGCRS[
        "BD50 (Brussels)",
        DATUM[
            "Reseau National Belge 1950 (Brussels)",
            ELLIPSOID[
                "International 1924",
                6378388,
                297,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7022]
            ],
            ID["EPSG",6809]
        ],
        PRIMEM[
            "Brussels",
            4.367975,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8910]
        ],
        ID["EPSG",4809]
    ],
    CONVERSION[
        "Belge Lambert 50",
        METHOD["Lambert Conic Conformal (2SP)",ID["EPSG",9802]],
        PARAMETER[
            "Latitude of false origin",
            90,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8821]
        ],
        PARAMETER[
            "Longitude of false origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8822]
        ],
        PARAMETER[
            "Latitude of 1st standard parallel",
            49.8333333333336,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8823]
        ],
        PARAMETER[
            "Latitude of 2nd standard parallel",
            51.1666666666669,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8824]
        ],
        PARAMETER[
            "Easting at false origin",
            150000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8826]
        ],
        PARAMETER[
            "Northing at false origin",
            5400000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8827]
        ],
        ID["EPSG",19901]
    ],
    CS[Cartesian,2,ID["EPSG",4499]],
    AXIS["Easting (X)",east],
    AXIS["Northing (Y)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",21500]
]

PROJ.4

+proj=lcc +lat_0=90 +lon_0=0 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000 +y_0=5400000 +ellps=intl +pm=brussels +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:21500", "+proj=lcc +lat_0=90 +lon_0=0 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000 +y_0=5400000 +ellps=intl +pm=brussels +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 21500,
  "name": "BD50 (Brussels) / Belge Lambert 50",
  "kind": "projected",
  "area": "Belgium - onshore",
  "unit": "metre",
  "bbox": [
    49.5,
    2.5,
    51.51,
    6.4
  ],
  "proj4": "+proj=lcc +lat_0=90 +lon_0=0 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000 +y_0=5400000 +ellps=intl +pm=brussels +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (21500, 'EPSG', 21500, '+proj=lcc +lat_0=90 +lon_0=0 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000 +y_0=5400000 +ellps=intl +pm=brussels +units=m +no_defs +type=crs', 'PROJCS["BD50 (Brussels) / Belge Lambert 50",GEOGCS["BD50 (Brussels)",DATUM["Reseau_National_Belge_1950_Brussels",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],AUTHORITY["EPSG","6809"]],PRIMEM["Brussels",4.367975,AUTHORITY["EPSG","8910"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4809"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",0],PARAMETER["standard_parallel_1",49.8333333333333],PARAMETER["standard_parallel_2",51.1666666666667],PARAMETER["false_easting",150000],PARAMETER["false_northing",5400000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","21500"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=lcc"
  "+lat_0=90"
  "+lon_0=0"
  "+lat_1=49.8333333333333"
  "+lat_2=51.1666666666667"
  "+x_0=150000"
  "+y_0=5400000"
  "+ellps=intl"
  "+pm=brussels"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

21500=PROJCS["BD50 (Brussels) / Belge Lambert 50",GEOGCS["BD50 (Brussels)",DATUM["Reseau_National_Belge_1950_Brussels",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],AUTHORITY["EPSG","6809"]],PRIMEM["Brussels",4.367975,AUTHORITY["EPSG","8910"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4809"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",0],PARAMETER["standard_parallel_1",49.8333333333333],PARAMETER["standard_parallel_2",51.1666666666667],PARAMETER["false_easting",150000],PARAMETER["false_northing",5400000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","21500"]]

Related Coordinate Systems

Available Transformations (1)

Transformations inherited from base CRS: EPSG:4809 (BD50 (Brussels))

Transformation	Source → Target	Accuracy (m)
BD50 (Brussels) to BD50 (1)	4809 → 4215	0

Other CRS using Reseau National Belge 1950 (Brussels)

Frequently Asked Questions

How do I add EPSG:21500 to GeoServer?

Add the following definition to your GeoServer configuration:

21500=PROJCS["BD50 (Brussels) / Belge Lambert 50",GEOGCS["BD50 (Brussels)",DATUM["Reseau_National_Belge_1950_Brussels",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],AUTHORITY["EPSG","6809"]],PRIMEM["Brussels",4.367975,AUTHORITY["EPSG","8910"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4809"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",0],PARAMETER["standard_parallel_1",49.8333333333333],PARAMETER["standard_parallel_2",51.1666666666667],PARAMETER["false_easting",150000],PARAMETER["false_northing",5400000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","21500"]]

Read the full GeoServer guide →

How do I add EPSG:21500 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (21500, 'EPSG', 21500, '+proj=lcc +lat_0=90 +lon_0=0 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000 +y_0=5400000 +ellps=intl +pm=brussels +units=m +no_defs +type=crs', 'PROJCS["BD50 (Brussels) / Belge Lambert 50",GEOGCS["BD50 (Brussels)",DATUM["Reseau_National_Belge_1950_Brussels",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],AUTHORITY["EPSG","6809"]],PRIMEM["Brussels",4.367975,AUTHORITY["EPSG","8910"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4809"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",0],PARAMETER["standard_parallel_1",49.8333333333333],PARAMETER["standard_parallel_2",51.1666666666667],PARAMETER["false_easting",150000],PARAMETER["false_northing",5400000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","21500"]]');

Read the full PostGIS guide →

How do I add EPSG:21500 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=lcc"
  "+lat_0=90"
  "+lon_0=0"
  "+lat_1=49.8333333333333"
  "+lat_2=51.1666666666667"
  "+x_0=150000"
  "+y_0=5400000"
  "+ellps=intl"
  "+pm=brussels"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:21500 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:21500", "+proj=lcc +lat_0=90 +lon_0=0 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000 +y_0=5400000 +ellps=intl +pm=brussels +units=m +no_defs +type=crs");

Read the full Proj4js guide →