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Convert NZGD2000 to NZGD2000 + NZVD2009 height

Convert coordinates from NZGD2000 (EPSG:4959) to NZGD2000 + NZVD2009 height (EPSG:9527) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4959-to-epsg-9527

Official EPSG transformation from NZGD2000 to NZGD2000 + NZVD2009 height

The EPSG Geodetic Parameter Dataset defines 1 transformation between NZGD2000 (EPSG:4959) and NZGD2000 + NZVD2009 height (EPSG:9527). Its parameters, accuracy and area of use are listed below.

NZGD2000 to NZGD2000 + NZVD2009 height (2)

EPSG:9627±0.1 m
Method:
Geog3D to Geog2D+GravityRelatedHeight (gtx)
Area of use:
New Zealand
Scope:
Reversible geoid model transformation.

Grid file: nzgeoid2009.gtx

Reversible alternative to NZGD2000 to NZVD2009 height (2) (code 9325).

Convert EPSG:4959 to EPSG:9527 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4959", "EPSG:9527", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4959 — NZGD2000

geographic system using latitude, longitude and ellipsoidal height · Area of use: New Zealand

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:4959 →

Target: EPSG:9527 — NZGD2000 + NZVD2009 height

compound horizontal + vertical reference system · Area of use: New Zealand

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +geoidgrids=nz_linz_nzgeoid2009.tif +geoid_crs=WGS84 +vunits=m +no_defs +type=crs
More about EPSG:9527 →

Frequently asked questions

How accurate is converting NZGD2000 to NZGD2000 + NZVD2009 height?
The most accurate official EPSG transformation between these systems is accurate to about ±0.1 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation (including the grid-shift files listed below) in a desktop GIS.
Does my data leave the browser when I use this converter?
No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.
Need the reverse? Convert EPSG:9527 to EPSG:4959 →