EPSG systems

EPSG:27200 NZGD49 / New Zealand Map Grid

Projected system (New Zealand Map Grid) in use: New Zealand - onshore. The full definition below, and conversion in one click.

System record
CodeEPSG:27200
NameNZGD49 / New Zealand Map Grid
TypeProjected system — New Zealand Map Grid
Area of use New Zealand - onshore
New Zealand - North Island, South Island, Stewart Island - onshore.
Bounds W 166,37° · S -47,33° · E 178,63° · N -34,10°
Countries New Zealand
DatumNew Zealand Geodetic Datum 1949
Ellipsoid International 1924 a = 6378388 m · 1/f = 297
Base geographic system EPSG:4272 — NZGD49
Unit metre (E east, N north)
Transformation to WGS 84 NZGD49 to WGS 84 (2) (EPSG:1564) — accuracy 4 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin-41degree
Longitude of natural origin173degree
False easting2510000metre
False northing6023150metre

proj4 definition

+proj=nzmg +lat_0=-41 +lon_0=173 +x_0=2510000 +y_0=6023150 +ellps=intl +units=m +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:27200.

WKT (ESRI format, the .prj content)

PROJCS["GD_1949_New_Zealand_Map_Grid",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]],PROJECTION["New_Zealand_Map_Grid"],PARAMETER["False_Easting",2510000.0],PARAMETER["False_Northing",6023150.0],PARAMETER["Longitude_Of_Origin",173.0],PARAMETER["Latitude_Of_Origin",-41.0],UNIT["Meter",1.0]]

All systems — New Zealand

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