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Convert RGNC91-93 to RGNC91-93 + NGNC08 height

Convert coordinates from RGNC91-93 (EPSG:4907) to RGNC91-93 + NGNC08 height (EPSG:9540) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4907-to-epsg-9540

Official EPSG transformation from RGNC91-93 to RGNC91-93 + NGNC08 height

The EPSG Geodetic Parameter Dataset defines 1 transformation between RGNC91-93 (EPSG:4907) and RGNC91-93 + NGNC08 height (EPSG:9540). Its parameters, accuracy and area of use are listed below.

RGNC91-93 to RGNC91-93 + NGNC08 height (1)

EPSG:9640±0.03 m
Method:
Geog3D to Geog2D+GravityRelatedHeight (IGN2009)
Area of use:
New Caledonia - Belep, Grande Terre, Ile des Pins, Loyalty Islands
Scope:
Reversible geoid model transformation.

Grid file: Ranc08_Circe.mnt

Reversible alternative to RGNC91-93 to NGNC08 height (1) (code 9352).

Convert EPSG:4907 to EPSG:9540 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4907", "EPSG:9540", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4907 — RGNC91-93

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

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:4907 →

Target: EPSG:9540 — RGNC91-93 + NGNC08 height

compound horizontal + vertical reference system · Area of use: New Caledonia - Belep, Grande Terre, Ile des Pins, Loyalty Islands

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +vunits=m +no_defs +type=crs
More about EPSG:9540 →

Frequently asked questions

How accurate is converting RGNC91-93 to RGNC91-93 + NGNC08 height?
The most accurate official EPSG transformation between these systems is accurate to about ±0.03 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:9540 to EPSG:4907 →