EPSG:CODE

EPSG:3823 — TWD97

Geographic 3D · Taiwan

Export Formats

WKT2
GEOGCRS[
    "TWD97",
    DATUM[
        "Taiwan Datum 1997",
        ELLIPSOID[
            "GRS 1980",
            6378137,
            298.257222101,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7019]
        ],
        ID["EPSG",1026]
    ],
    CS[ellipsoidal,3,ID["EPSG",6423]],
    AXIS[
        "Geodetic latitude (Lat)",
        north,
        ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]]
    ],
    AXIS[
        "Geodetic longitude (Lon)",
        east,
        ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]]
    ],
    AXIS["Ellipsoidal height (h)",up,LENGTHUNIT["metre",1,ID["EPSG",9001]]],
    ID["EPSG",3823]
]

Other CRS for TW

Other CRS using Taiwan Datum 1997

Frequently Asked Questions

How do I add EPSG:3823 to PostGIS?

Add the following definition to your PostGIS configuration: 

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3823, 'EPSG', 3823, '+proj=longlat +ellps=GRS80 +no_defs +type=crs', '');
Read the full PostGIS guide →

How do I add EPSG:3823 to MapServer?

Add the following definition to your MapServer configuration: 

PROJECTION
  "+proj=longlat"
  "+ellps=GRS80"
  "+no_defs"
  "+type=crs"
END
Read the full MapServer guide →

How do I use EPSG:3823 with Proj4js?

Add the following definition to your Proj4js configuration: 

proj4.defs("EPSG:3823", "+proj=longlat +ellps=GRS80 +no_defs +type=crs");
Read the full Proj4js guide →