Convert coordinates from JAD69 (EPSG:4242) to WGS 72 (EPSG:4322) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 2 transformations between JAD69 (EPSG:4242) and WGS 72 (EPSG:4322). Each applies to a specific area — pick the one whose area of use covers your data.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 50 | metre |
| Y-axis translation(ty) | 212 | metre |
| Z-axis translation(tz) | 381 | metre |
Derived in 1981 through Transit observations at 4 stations by Geodetic Survey for Petroleum Corporation of Jamaica.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 48 | metre |
| Y-axis translation(ty) | 208 | metre |
| Z-axis translation(tz) | 382 | metre |
Derived in 1977 through Transit observations at 2 stations by US DMA.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4242", "EPSG:4322", 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: Jamaica - onshore
+proj=longlat +ellps=clrk66 +no_defs +type=crsMore about EPSG:4242 →
geographic system using latitude and longitude on an ellipsoid · Area of use: World
+proj=longlat +ellps=WGS72 +no_defs +type=crsMore about EPSG:4322 →