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Convert Guadeloupe 1948 to WGS 84

Convert coordinates from Guadeloupe 1948 (EPSG:4622) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4622-to-epsg-4326

Official EPSG transformations from Guadeloupe 1948 to WGS 84

The EPSG Geodetic Parameter Dataset defines 2 transformations between Guadeloupe 1948 (EPSG:4622) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

Guadeloupe 1948 to WGS 84 (2)

EPSG:1905±0.1 mBest accuracy
Method:
Position Vector transformation (geog2D domain)
Area of use:
Guadeloupe - Grande-Terre and surrounding islands - onshore
Scope:
Transformation of coordinates at 0.1m level of accuracy.
ParameterValueUnit
X-axis translation(tx)-472.29metre
Y-axis translation(ty)-5.63metre
Z-axis translation(tz)-304.12metre
X-axis rotation(rx)0.4362arc-second
Y-axis rotation(ry)-0.8374arc-second
Z-axis rotation(rz)0.2563arc-second
Scale difference(ds)1.8984parts per million

Guadeloupe 1948 to WGS 84 (1)

EPSG:1904±10 m
Method:
Geocentric translations (geog2D domain)
Area of use:
Guadeloupe - Grande-Terre and surrounding islands - onshore
Scope:
Transformation of coordinates at 10m level of accuracy.
ParameterValueUnit
X-axis translation(tx)-467metre
Y-axis translation(ty)-16metre
Z-axis translation(tz)-300metre

Convert EPSG:4622 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4622", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4622 — Guadeloupe 1948

geographic system using latitude and longitude on an ellipsoid · Area of use: Guadeloupe - Grande-Terre and surrounding islands - onshore

+proj=longlat +ellps=intl +no_defs +type=crs
More about EPSG:4622 →

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 Guadeloupe 1948 to WGS 84?
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 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:4622 →