Convert coordinates from SLD99 (EPSG:5233) 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 SLD99 (EPSG:5233) and WGS 84 (EPSG:4326). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -0.293 | metre |
| Y-axis translation(ty) | 766.95 | metre |
| Z-axis translation(tz) | 87.713 | metre |
| X-axis rotation(rx) | -0.195704 | arc-second |
| Y-axis rotation(ry) | -1.695068 | arc-second |
| Z-axis rotation(rz) | -3.473016 | arc-second |
| Scale difference(ds) | -0.039338 | parts per million |
Derived at 58 stations.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:5233", "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: Sri Lanka - onshore
+proj=longlat +ellps=evrst30 +towgs84=-0.293,766.95,87.713,0.195704,1.695068,3.473016,-0.039338 +no_defs +type=crsMore about EPSG:5233 →
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 →