EPSG:11341

DrukRef23 / BNG2023

Transform Get position on a map

Available transformations
to EPSG:4326
No other targets exist for this CRS

  • Bhutan. , accuracy 1.0 m, code 11227 (default) [3]

Selected transformation

Name: DrukRef23 to WGS 84 (1)

Method: Geocentric translations (geog2D domain)

Remarks: DrukRef23 and WGS 84 are both realizations of ITRS.

Information source: IOGP

Revision date: 2026-02-13

Attributes

Unit: metre

Geodetic CRS: DrukRef23

Datum: National Reference Frame of Bhutan 2023

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: MIRASpaco on behalf of NLCS (National Land Commission Secretariat of Bhutan), "Bhutan National Grid 2023 (BNG2023) Summary Report".

Revision date: 2026-02-13

Scope: Cadastre, engineering survey, topographic mapping.

Area of use: Bhutan.

Coordinate system: Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
542976.82 201736.91

Projected bounds:
374607.2 111356.97
711966.88 293762.97

WGS84 bounds:
88.74 26.7
92.13 28.33

Bhutan.
MapTiler banner

Definition: OGC Well Known Text

PROJCS["DrukRef23 / BNG2023",
    GEOGCS["DrukRef23",
        DATUM["National_Reference_Frame_of_Bhutan_2023",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[0,0,0,0,0,0,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","11226"]],
    PROJECTION["Lambert_Conformal_Conic_2SP"],
    PARAMETER["latitude_of_origin",27.5],
    PARAMETER["central_meridian",90],
    PARAMETER["standard_parallel_1",27.65],
    PARAMETER["standard_parallel_2",26.9],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",200000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","11341"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["DrukRef23 / BNG2023",
    BASEGEOGCRS["DrukRef23",
        DATUM["National Reference Frame of Bhutan 2023",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",11226]],
    CONVERSION["Bhutan National Grid 2023",
        METHOD["Lambert Conic Conformal (2SP)",
            ID["EPSG",9802]],
        PARAMETER["Latitude of false origin",27.5,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8821]],
        PARAMETER["Longitude of false origin",90,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8822]],
        PARAMETER["Latitude of 1st standard parallel",27.65,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8823]],
        PARAMETER["Latitude of 2nd standard parallel",26.9,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8824]],
        PARAMETER["Easting at false origin",500000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8826]],
        PARAMETER["Northing at false origin",200000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8827]]],
    CS[Cartesian,2],
        AXIS["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping."],
        AREA["Bhutan."],
        BBOX[26.7,88.74,28.33,92.13]],
    ID["EPSG",11341]]

Definition: ESRI Well Known Text

PROJCS["DrukRef23_BNG2023",
    GEOGCS["GCS_DrukRef23",
        DATUM["D_National_Reference_Frame_of_Bhutan_2023",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Lambert_Conformal_Conic"],
    PARAMETER["False_Easting",500000.0],
    PARAMETER["False_Northing",200000.0],
    PARAMETER["Central_Meridian",90.0],
    PARAMETER["Standard_Parallel_1",27.65],
    PARAMETER["Standard_Parallel_2",26.9],
    PARAMETER["Latitude_Of_Origin",27.5],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=lcc +lat_0=27.5 +lon_0=90 +lat_1=27.65 +lat_2=26.9 +x_0=500000 +y_0=200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:11341","+proj=lcc +lat_0=27.5 +lon_0=90 +lat_1=27.65 +lat_2=26.9 +x_0=500000 +y_0=200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "DrukRef23 / BNG2023",
    "base_crs": {
        "type": "GeographicCRS",
        "name": "DrukRef23",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "National Reference Frame of Bhutan 2023",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 11226
        }
    },
    "conversion": {
        "name": "Bhutan National Grid 2023",
        "method": {
            "name": "Lambert Conic Conformal (2SP)",
            "id": {
                "authority": "EPSG",
                "code": 9802
            }
        },
        "parameters": [
            {
                "name": "Latitude of false origin",
                "value": 27.5,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8821
                }
            },
            {
                "name": "Longitude of false origin",
                "value": 90,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8822
                }
            },
            {
                "name": "Latitude of 1st standard parallel",
                "value": 27.65,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8823
                }
            },
            {
                "name": "Latitude of 2nd standard parallel",
                "value": 26.9,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8824
                }
            },
            {
                "name": "Easting at false origin",
                "value": 500000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8826
                }
            },
            {
                "name": "Northing at false origin",
                "value": 200000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8827
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Easting",
                "abbreviation": "E",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Cadastre, engineering survey, topographic mapping.",
    "area": "Bhutan.",
    "bbox": {
        "south_latitude": 26.7,
        "west_longitude": 88.74,
        "north_latitude": 28.33,
        "east_longitude": 92.13
    },
    "id": {
        "authority": "EPSG",
        "code": 11341
    }
}

Definition: GeoServer

11341=PROJCS["DrukRef23 / BNG2023",GEOGCS["DrukRef23",DATUM["National_Reference_Frame_of_Bhutan_2023",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","11226"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",27.5],PARAMETER["central_meridian",90],PARAMETER["standard_parallel_1",27.65],PARAMETER["standard_parallel_2",26.9],PARAMETER["false_easting",500000],PARAMETER["false_northing",200000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","11341"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=lcc"
	"lat_0=27.5"
	"lon_0=90"
	"lat_1=27.65"
	"lat_2=26.9"
	"x_0=500000"
	"y_0=200000"
	"ellps=GRS80"
	"towgs84=0,0,0,0,0,0,0"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=lcc +lat_0=27.5 +lon_0=90 +lat_1=27.65 +lat_2=26.9 +x_0=500000 +y_0=200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=lcc +lat_0=27.5 +lon_0=90 +lat_1=27.65 +lat_2=26.9 +x_0=500000 +y_0=200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11341, 'EPSG', 11341, '+proj=lcc +lat_0=27.5 +lon_0=90 +lat_1=27.65 +lat_2=26.9 +x_0=500000 +y_0=200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["DrukRef23 / BNG2023",GEOGCS["DrukRef23",DATUM["National_Reference_Frame_of_Bhutan_2023",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","11226"]],PROJECTION["Lambert_Conformal_Conic_2SP"],PARAMETER["latitude_of_origin",27.5],PARAMETER["central_meridian",90],PARAMETER["standard_parallel_1",27.65],PARAMETER["standard_parallel_2",26.9],PARAMETER["false_easting",500000],PARAMETER["false_northing",200000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","11341"]]');