Convert coordinates from Hanoi 1972 (EPSG:4147) 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 1 transformation between Hanoi 1972 (EPSG:4147) and WGS 84 (EPSG:4326). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -17.51 | metre |
| Y-axis translation(ty) | -108.32 | metre |
| Z-axis translation(tz) | -62.39 | metre |
Derived in Vung Tau area.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4147", "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: Vietnam - onshore
+proj=longlat +ellps=krass +no_defs +type=crsMore about EPSG:4147 →
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 →