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Convert RGAF09 to RGAF09 + IGN 1988 SM height

Convert coordinates from RGAF09 (EPSG:5488) to RGAF09 + IGN 1988 SM height (EPSG:9535) — 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-9535

Official EPSG transformations from RGAF09 to RGAF09 + IGN 1988 SM height

The EPSG Geodetic Parameter Dataset defines 2 transformations between RGAF09 (EPSG:5488) and RGAF09 + IGN 1988 SM height (EPSG:9535). Each applies to a specific area — pick the one whose area of use covers your data.

RGAF09 to RGAF09 + IGN 1988 SM height (3)

EPSG:10887±0.05 mBest accuracy
Method:
Geog3D to Geog2D+GravityRelatedHeight (IGN2009)
Area of use:
Guadeloupe - St Martin - onshore
Scope:
Reversible geoid model transformation.

Grid file: GG23SM.tac

Reversible alternative to RGAF09 to IGN 1988 SM height (3) (code 10841).

RGAF09 to RGAF09 + IGN 1988 SM height (2)

EPSG:9635±0.1 m
Method:
Geog3D to Geog2D+GravityRelatedHeight (IGN2009)
Area of use:
Guadeloupe - St Martin - onshore
Scope:
Reversible geoid model transformation.

Grid file: gg10_smv2.mnt

Reversible alternative to RGAF09 to IGN 1988 SM height (2) (code 9188).

Convert EPSG:5488 to EPSG:9535 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:5488", "EPSG:9535", 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:9535 — RGAF09 + IGN 1988 SM height

compound horizontal + vertical reference system · Area of use: Guadeloupe - St Martin - onshore

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +vunits=m +no_defs +type=crs
More about EPSG:9535 →

Frequently asked questions

How accurate is converting RGAF09 to RGAF09 + IGN 1988 SM 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:9535 to EPSG:5488 →