Convert IGN72 Grande Terre to WGS 84

Convert coordinates from IGN72 Grande Terre (EPSG:4662) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (lon, lat (decimal degrees))

Output (lon, lat (decimal degrees))

Direct link to this transformation: epsgtransform.com/transform/epsg-4662-to-epsg-4326

Official EPSG transformations from IGN72 Grande Terre to WGS 84

The EPSG Geodetic Parameter Dataset defines 3 transformations between IGN72 Grande Terre (EPSG:4662) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

IGN72 Grande Terre to WGS 84 (2)

EPSG:1963±1 mBest accuracy

Method:: Position Vector transformation (geog2D domain)
Area of use:: New Caledonia - Grande Terre
Scope:: Transformation of coordinates at 1m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	97.295	metre
Y-axis translation(ty)	-263.247	metre
Z-axis translation(tz)	310.882	metre
X-axis rotation(rx)	-1.5999	arc-second
Y-axis rotation(ry)	0.8386	arc-second
Z-axis rotation(rz)	3.1409	arc-second
Scale difference(ds)	13.3259	parts per million

Withdrawn by information source and replaced by improved information - see CT code 15903.

IGN72 Grande Terre to WGS 84 (3)

EPSG:15903±2 m

Method:: Geocentric translations (geog2D domain)
Area of use:: New Caledonia - Grande Terre
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Parameter	Value	Unit
X-axis translation(tx)	-11.64	metre
Y-axis translation(ty)	-348.6	metre
Z-axis translation(tz)	291.98	metre

Parameter values taken from IGN72 Grande Terre to RGNC91-93 (1) (code 15882) assuming that RGNC91-93 is equivalent to WGS 84 to within the accuracy of the transformation.

IGN72 Grande Terre to WGS 84 (1)

EPSG:1962±10 m

Method:: Geocentric translations (geog2D domain)
Area of use:: New Caledonia - Grande Terre
Scope:: Transformation of coordinates at 10m level of accuracy.

Parameter	Value	Unit
X-axis translation(tx)	-13	metre
Y-axis translation(ty)	-348	metre
Z-axis translation(tz)	292	metre

Withdrawn by information source and replaced by improved information from local authority - see tfm code 15903.

Convert EPSG:4662 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4662", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4662 — IGN72 Grande Terre

geographic system using latitude and longitude on an ellipsoid · Area of use: New Caledonia - Grande Terre

+proj=longlat +ellps=intl +towgs84=-11.64,-348.6,291.98,0,0,0,0 +no_defs +type=crs

More about EPSG:4662 →

Target: EPSG:4326 — WGS 84

geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)

+proj=longlat +datum=WGS84 +no_defs +type=crs

More about EPSG:4326 →

Frequently asked questions

How accurate is converting IGN72 Grande Terre to WGS 84?: The most accurate official EPSG transformation between these systems is accurate to about ±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 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:4326 to EPSG:4662 →