EPSG systems

EPSG:4272 NZGD49

Geographic system in latitude and longitude, in use: New Zealand - onshore and nearshore. Datum, ellipsoid and transformation to WGS 84 below.

System record
CodeEPSG:4272
NameNZGD49
TypeGeographic system
Area of use New Zealand - onshore and nearshore
New Zealand - North Island, South Island, Stewart Island - onshore and nearshore.
Bounds W 165,87° · S -47,65° · E 179,27° · N -33,89°
Countries New Zealand
DatumNew Zealand Geodetic Datum 1949
Ellipsoid International 1924 a = 6378388 m · 1/f = 297
Unit degree (Lat north, Lon east)
Transformation to WGS 84 NZGD49 to WGS 84 (2) (EPSG:1564) — accuracy 4 m
ScopeGeodesy.

proj4 definition

+proj=longlat +ellps=intl +towgs84=59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:4272.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_New_Zealand_1949",DATUM["D_New_Zealand_1949",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — New Zealand

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.