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EPSG Library · Americas and Asia-Pacific

EPSG:2193 — NZGD2000 / New Zealand Transverse Mercator 2000

Source: EPSG Dataset via PROJ 9.5.1 · Updated

Summary

EPSG:2193 (NZGD2000 / New Zealand Transverse Mercator 2000) is a projected coordinate reference system on the New Zealand Geodetic Datum 2000 datum using the Transverse Mercator method, with coordinates in metres. Area of use: New Zealand - North Island, South Island, Stewart Island - onshore.

  • Type: projected
  • Datum: New Zealand Geodetic Datum 2000
  • Units: metre
  • Axes: N, E

Definition

EPSG:2193 as published in the EPSG Dataset (PROJ 9.5.1).
PropertyValue
EPSG codeEPSG:2193
NameNZGD2000 / New Zealand Transverse Mercator 2000
TypeProjected CRS
DatumNew Zealand Geodetic Datum 2000
EllipsoidGRS 1980 (a = 6,378,137.000 m, 1/f = 298.257222)
Prime meridianGreenwich
Projection methodTransverse Mercator
AxesNorthing (N, north, metre); Easting (E, east, metre)
ScopeEngineering survey, topographic mapping.
Bounding box166.37° to 178.63° longitude, -47.33° to -34.1° latitude

Area of use

New Zealand - North Island, South Island, Stewart Island - onshore.

Projection parameters

Transverse Mercator parameters.
ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin173degree
Scale factor at natural origin0.9996unity
False easting1,600,000metre
False northing10,000,000metre

Example coordinates

A WGS 84 point at longitude 172.5°, latitude -40.715° (inside the area of use) has these coordinates in EPSG:2193:

Computed with PROJ using the EPSG default operation: axis order change (2D) + Inverse of NZGD2000 to WGS 84 (1) + New Zealand Transverse Mercator 2000 + axis order change (2D).
AxisValueUnit
N1,557,768.545m
E5,492,759.657m

At this point the projection scale factor is 0.99962195 and the grid convergence is +0.326153°.

Open this conversion in the coordinate converter

Transformations to WGS 84

Candidate operations from the EPSG Dataset, best first as ranked by PROJ.
OperationAccuracyArea of use
axis order change (2D) + NZGD2000 to WGS 84 (1) + axis order change (2D)1 mNew Zealand - onshore and offshore. Includes Antipodes Islands, Auckland Islands, Bounty Islands, Chatham Islands, Cambell Island, Kermadec Islands, Raoul Island and Snares Islands.

Transformations change the datum, so each has an accuracy and an area of use. Choose the most accurate one that covers your data and record its name. See datum transformations.

Definitions and downloads

PROJ string

+proj=tmerc +lat_0=0 +lon_0=173 +k=0.9996 +x_0=1600000 +y_0=10000000 +ellps=GRS80 +units=m +no_defs +type=crs

A PROJ string cannot carry every EPSG detail (axis order, datum ensemble, transformations). Prefer WKT2 or the EPSG code itself.

Proj4js definition used by the converter

+proj=tmerc +lat_0=0 +lon_0=173 +k=0.9996 +x_0=1600000 +y_0=10000000 +ellps=GRS80 +units=m +towgs84=0,0,0 +no_defs

Datum shift from NZGD2000 to WGS 84 (1) (EPSG accuracy 1 m), the best single Helmert operation for this area of use. Where PROJ prefers a grid-based or multi-step operation (see the table above), results can differ by up to that operation's accuracy.

WKT2:2019
PROJCRS["NZGD2000 / New Zealand Transverse Mercator 2000", BASEGEOGCRS["NZGD2000", DATUM["New Zealand Geodetic Datum 2000", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4167]], CONVERSION["New Zealand Transverse Mercator 2000", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",173, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",1600000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",10000000, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["northing (N)",north, ORDER[1], LENGTHUNIT["metre",1]], AXIS["easting (E)",east, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["New Zealand - North Island, South Island, Stewart Island - onshore."], BBOX[-47.33,166.37,-34.1,178.63]], ID["EPSG",2193]]

Downloads

FAQ

What is EPSG:2193?

EPSG:2193 (NZGD2000 / New Zealand Transverse Mercator 2000) is a projected coordinate reference system on the New Zealand Geodetic Datum 2000 datum using the Transverse Mercator method, with coordinates in metres. Area of use: New Zealand - North Island, South Island, Stewart Island - onshore.

Where can EPSG:2193 be used?

Its area of use is: New Zealand - North Island, South Island, Stewart Island - onshore.

Is EPSG:2193 in metres or degrees?

EPSG:2193 is projected, so coordinates are northing and easting in metres, not degrees.

How do I convert EPSG:2193 to latitude and longitude?

Transform from EPSG:2193 to EPSG:4326 (WGS 84). In GeoCAD Bridge open the coordinate converter with EPSG:2193 preselected, enter easting and northing, and choose WGS 84 as the target.

How accurate is the transformation from EPSG:2193 to WGS 84?

The most accurate EPSG transformation listed here is “axis order change (2D) + NZGD2000 to WGS 84 (1) + axis order change (2D)”, with a stated accuracy of 1 m for New Zealand - onshore and offshore. Includes Antipodes Islands, Auckland Islands, Bounty Islands, Chatham Islands, Cambell Island, Kermadec Islands, Raoul Island and Snares Islands.. Always check the area of use before applying it.

Coordinate systems

Articles

Tools

References

  1. IOGP. EPSG Geodetic Parameter Dataset, epsg.org/crs_2193.
  2. PROJ 9.5.1 / pyproj 3.7.2, used to compute every value on this page.

Cite this page

GeoCAD Bridge. “EPSG:2193 — NZGD2000 / New Zealand Transverse Mercator 2000.” GeoCAD Bridge EPSG Library, updated 2026-10-05. https://www.geocadbridge.com/epsg/2193/