EPSG:6669

JGD2024 / Japan Plane Rectangular CS I

Transform Get position on a map

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

  • Japan - onshore and offshore. , accuracy 1.0 m, code 9936 (default) [3]

Selected transformation

Name: JGD2024 to WGS 84 (1)

Method: Geocentric translations (geog2D domain)

Remarks: On adoption of JGD2024 (vertical) with effect from 1st April 2025, the name of the source CRS was changed from JGD2011 to JGD2024; there is no change of definition or of coordinate values.

Information source: IOGP

Revision date: 2026-04-21

Attributes

Unit: metre

Geodetic CRS: JGD2024

Datum: Japanese Geodetic Datum 2024

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Geospatial Information Authority of Japan (GSI).

Revision date: 2026-04-21

Scope: Cadastre, engineering survey, topographic mapping (large and medium scale).

Remarks: Replaces JGD2000 / Japan Plane Rectangular CS I (CRS code 2443) with effect from 21st October 2011. On adoption of JGD2024 (vertical) with effect from 1st April 2025, the name of this CRS was changed from JGD2011... to JGD2024...; there is no change of definition or of coordinate values.

Area of use: Japan - onshore - Kyushu west of approximately 130°E - Nagasaki-ken; islands of Kagoshima-ken between 27°N and 32°N and between 128°18'E and 130°E (between 128°18'E and 30°13'E for Amami islands).

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

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SimpleMap

Center coordinates
1000647.17 -110151.07

Projected bounds:
-759369.1 -1762167.82
3100412.79 1848725.85

WGS84 bounds:
122.38 17.09
157.65 46.05

Japan - onshore and offshore.
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Definition: OGC Well Known Text

PROJCS["JGD2024 / Japan Plane Rectangular CS I",
    GEOGCS["JGD2024",
        DATUM["Japanese Geodetic Datum 2024",
            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","6668"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",33],
    PARAMETER["central_meridian",129.5],
    PARAMETER["scale_factor",0.9999],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","6669"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["JGD2024 / Japan Plane Rectangular CS I",
    BASEGEOGCRS["JGD2024",
        DATUM["Japanese Geodetic Datum 2024",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",6668]],
    CONVERSION["Japan Plane Rectangular CS zone I",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",33,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",129.5,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.9999,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",0,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",0,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["northing (X)",north,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["easting (Y)",east,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping (large and medium scale)."],
        AREA["Japan - onshore - Kyushu west of approximately 130°E - Nagasaki-ken; islands of Kagoshima-ken between 27°N and 32°N and between 128°18'E and 130°E (between 128°18'E and 30°13'E for Amami islands)."],
        BBOX[26.96,128.17,34.74,130.46]],
    ID["EPSG",6669]]

Definition: ESRI Well Known Text

PROJCS["JGD_2011_Japan_Zone_1",
    GEOGCS["GCS_JGD_2011",
        DATUM["D_JGD_2011",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",0.0],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",129.5],
    PARAMETER["Scale_Factor",0.9999],
    PARAMETER["Latitude_Of_Origin",33.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=tmerc +lat_0=33 +lon_0=129.5 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:6669","+proj=tmerc +lat_0=33 +lon_0=129.5 +k=0.9999 +x_0=0 +y_0=0 +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": "JGD2024 / Japan Plane Rectangular CS I",
    "base_crs": {
        "type": "GeographicCRS",
        "name": "JGD2024",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Japanese Geodetic Datum 2024",
            "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": 6668
        }
    },
    "conversion": {
        "name": "Japan Plane Rectangular CS zone I",
        "method": {
            "name": "Transverse Mercator",
            "id": {
                "authority": "EPSG",
                "code": 9807
            }
        },
        "parameters": [
            {
                "name": "Latitude of natural origin",
                "value": 33,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8801
                }
            },
            {
                "name": "Longitude of natural origin",
                "value": 129.5,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 0.9999,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 0,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 0,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8807
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Northing",
                "abbreviation": "X",
                "direction": "north",
                "unit": "metre"
            },
            {
                "name": "Easting",
                "abbreviation": "Y",
                "direction": "east",
                "unit": "metre"
            }
        ]
    },
    "scope": "Cadastre, engineering survey, topographic mapping (large and medium scale).",
    "area": "Japan - onshore - Kyushu west of approximately 130°E - Nagasaki-ken; islands of Kagoshima-ken between 27°N and 32°N and between 128°18'E and 130°E (between 128°18'E and 30°13'E for Amami islands).",
    "bbox": {
        "south_latitude": 26.96,
        "west_longitude": 128.17,
        "north_latitude": 34.74,
        "east_longitude": 130.46
    },
    "id": {
        "authority": "EPSG",
        "code": 6669
    }
}

Definition: GeoServer

6669=PROJCS["JGD2024 / Japan Plane Rectangular CS I",GEOGCS["JGD2024",DATUM["Japanese Geodetic Datum 2024",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","6668"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",33],PARAMETER["central_meridian",129.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","6669"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=33"
	"lon_0=129.5"
	"k=0.9999"
	"x_0=0"
	"y_0=0"
	"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=tmerc +lat_0=33 +lon_0=129.5 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=33 +lon_0=129.5 +k=0.9999 +x_0=0 +y_0=0 +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 ( 6669, 'EPSG', 6669, '+proj=tmerc +lat_0=33 +lon_0=129.5 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["JGD2024 / Japan Plane Rectangular CS I",GEOGCS["JGD2024",DATUM["Japanese Geodetic Datum 2024",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","6668"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",33],PARAMETER["central_meridian",129.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","6669"]]');