Convert coordinates from NZGD49 (EPSG:4272) to NZGD2000 (EPSG:4167) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 3 transformations between NZGD49 (EPSG:4272) and NZGD2000 (EPSG:4167). Each applies to a specific area — pick the one whose area of use covers your data.
Grid file: nzgd2kgrid0005.gsb
These same parameter values may be used to transform to WGS 84 - see NZGD49 to WGS 84 (4) (code 1670).
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 59.47 | metre |
| Y-axis translation(ty) | -5.04 | metre |
| Z-axis translation(tz) | 187.44 | metre |
| X-axis rotation(rx) | -0.47 | arc-second |
| Y-axis rotation(ry) | 0.1 | arc-second |
| Z-axis rotation(rz) | -1.024 | arc-second |
| Scale difference(ds) | -4.5993 | parts per million |
For better accuracy use NZGD49 to NZGD2000 (3) (code 1568).
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 54.4 | metre |
| Y-axis translation(ty) | -20.1 | metre |
| Z-axis translation(tz) | 183.1 | metre |
For better accuracy use NZGD49 to NZGD2000 (2) (code 1701) or NZGD49 to NZGD2000 (3) (code 1568).
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4272", "EPSG:4167", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geographic system using latitude and longitude on an ellipsoid · Area of use: New Zealand - onshore and nearshore
+proj=longlat +ellps=intl +no_defs +type=crsMore about EPSG:4272 →
geographic system using latitude and longitude on an ellipsoid · Area of use: New Zealand
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crsMore about EPSG:4167 →