Convert coordinates from Saint Pierre et Miquelon 1950 (EPSG:4638) 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 Saint Pierre et Miquelon 1950 (EPSG:4638) 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) | 11.363 | metre |
| Y-axis translation(ty) | 424.148 | metre |
| Z-axis translation(tz) | 373.13 | metre |
Replaces Saint Pierre et Miquelon 1950 to WGS 84 (1) (code 1923) from March 2006. Accuracy +/- 0.5 to 1 metre.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 30 | metre |
| Y-axis translation(ty) | 430 | metre |
| Z-axis translation(tz) | 368 | metre |
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4638", "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 Pierre and Miquelon - onshore
+proj=longlat +ellps=clrk66 +towgs84=11.363,424.148,373.13,0,0,0,0 +no_defs +type=crsMore about EPSG:4638 →
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 →