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Convert RGAF09 to RGAF09 + Guadeloupe 1988 height

Convert coordinates from RGAF09 (EPSG:5488) to RGAF09 + Guadeloupe 1988 height (EPSG:9531) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-5488-to-epsg-9531

Official EPSG transformation from RGAF09 to RGAF09 + Guadeloupe 1988 height

The EPSG Geodetic Parameter Dataset defines 1 transformation between RGAF09 (EPSG:5488) and RGAF09 + Guadeloupe 1988 height (EPSG:9531). Its parameters, accuracy and area of use are listed below.

RGAF09 to RGAF09 + Guadeloupe 1988 height (2)

EPSG:9631±0.05 m
Method:
Geog3D to Geog2D+GravityRelatedHeight (IGN2009)
Area of use:
Guadeloupe - Grande-Terre and Basse-Terre - onshore
Scope:
Reversible geoid model transformation.

Grid file: RAGTBT2016.mnt

Reversible alternative to RGAF09 to Guadeloupe 1988 height (2) (code 9133).

Convert EPSG:5488 to EPSG:9531 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:5488", "EPSG:9531", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:5488 — RGAF09

geographic system using latitude, longitude and ellipsoidal height · Area of use: Caribbean - French Antilles

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:5488 →

Target: EPSG:9531 — RGAF09 + Guadeloupe 1988 height

compound horizontal + vertical reference system · Area of use: Guadeloupe - Grande-Terre and Basse-Terre - onshore

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +vunits=m +no_defs +type=crs
More about EPSG:9531 →

Frequently asked questions

How accurate is converting RGAF09 to RGAF09 + Guadeloupe 1988 height?
The most accurate official EPSG transformation between these systems is accurate to about ±0.05 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:9531 to EPSG:5488 →