EPSG:CODE

EPSG:4267 — NAD27

Geographic 2D · North America - NAD27

Export Formats

OGC WKT
GEOGCS[
    "NAD27",
    DATUM[
        "North_American_Datum_1927",
        SPHEROID["Clarke 1866",6378206.4,294.978698213898],
        EXTENSION["PROJ4_GRIDS","NTv2_0.gsb"]
    ],
    PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4267"]
]

Related Coordinate Systems

Available Transformations (168)

Transformation Source → Target Accuracy (m)
NAD27 to NAD83 (1)
4267 → 4269 0.15
NAD27 to NAD83 (7)
4267 → 4269 0.15
NAD27 to NAD83(HARN) (22)
4267 → 4152 0.2
NAD27 to NAD83(HARN) (1)
4267 → 4152 0.2
NAD27 to NAD83(HARN) (2)
4267 → 4152 0.2
NAD27 to NAD83(HARN) (3)
4267 → 4152 0.2
NAD27 to NAD83(HARN) (4)
4267 → 4152 0.2
NAD27 to NAD83(HARN) (5)
4267 → 4152 0.2
NAD27 to NAD83(HARN) (6)
4267 → 4152 0.2
NAD27 to NAD83(HARN) (7)
4267 → 4152 0.2

Other CRS using North American Datum 1927 (194)

Frequently Asked Questions

How do I add EPSG:4267 to GeoServer?

Add the following definition to your GeoServer configuration: 

4267=GEOGCS["NAD27",DATUM["North_American_Datum_1927",SPHEROID["Clarke 1866",6378206.4,294.978698213898],EXTENSION["PROJ4_GRIDS","NTv2_0.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4267"]]
Read the full GeoServer guide →

How do I add EPSG:4267 to PostGIS?

Add the following definition to your PostGIS configuration: 

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4267, 'EPSG', 4267, '+proj=longlat +ellps=clrk66 +nadgrids=NTv2_0.gsb +no_defs +type=crs', 'GEOGCS["NAD27",DATUM["North_American_Datum_1927",SPHEROID["Clarke 1866",6378206.4,294.978698213898],EXTENSION["PROJ4_GRIDS","NTv2_0.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4267"]]');
Read the full PostGIS guide →

How do I add EPSG:4267 to MapServer?

Add the following definition to your MapServer configuration: 

PROJECTION
  "+proj=longlat"
  "+ellps=clrk66"
  "+nadgrids=NTv2_0.gsb"
  "+no_defs"
  "+type=crs"
END
Read the full MapServer guide →

How do I use EPSG:4267 with Proj4js?

Add the following definition to your Proj4js configuration: 

proj4.defs("EPSG:4267", "+proj=longlat +ellps=clrk66 +nadgrids=NTv2_0.gsb +no_defs +type=crs");
Read the full Proj4js guide →