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Convert RGNC91-93 to IGN72 Grande Terre

Convert coordinates from RGNC91-93 (EPSG:4749) to IGN72 Grande Terre (EPSG:4662) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4749-to-epsg-4662

Official EPSG transformation from RGNC91-93 to IGN72 Grande Terre

The EPSG Geodetic Parameter Dataset defines 1 transformation between RGNC91-93 (EPSG:4749) and IGN72 Grande Terre (EPSG:4662). Its parameters, accuracy and area of use are listed below.

RGNC91-93 to IGN72 Grande Terre (6)

EPSG:15962±0.1 m
Method:
NTv2
Area of use:
New Caledonia - Grande Terre
Scope:
Transformation of coordinates at 0.1m level of accuracy.

Grid file: RGNC1991_IGN72GrandeTerre.gsb

Emulation using NTv2 method of tfm IGN72 Grande Terre to RGNC91-93 (4) (code 9329). Note reversal sign of of parameter values in grid file.

Convert EPSG:4749 to EPSG:4662 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4749", "EPSG:4662", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4749 — RGNC91-93

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

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:4749 →

Target: 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 →

Frequently asked questions

How accurate is converting RGNC91-93 to IGN72 Grande Terre?
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:4662 to EPSG:4749 →