Convert coordinates from St. Lucia 1955 (EPSG:4606) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 2 transformations between St. Lucia 1955 (EPSG:4606) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -153 | metre |
| Y-axis translation(ty) | 153 | metre |
| Z-axis translation(tz) | 307 | metre |
Derived at 3 stations. Accuracy 1m in each axis.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -149 | metre |
| Y-axis translation(ty) | 128 | metre |
| Z-axis translation(tz) | 296 | metre |
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4606", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geographic system using latitude and longitude on an ellipsoid · Area of use: St Lucia - onshore
+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crsMore about EPSG:4606 →
geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)
+proj=longlat +datum=WGS84 +no_defs +type=crsMore about EPSG:4326 →