Convert coordinates from Kalianpur 1962 (EPSG:4145) 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 6 transformations between Kalianpur 1962 (EPSG:4145) 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) | 275.57 | metre |
| Y-axis translation(ty) | 676.78 | metre |
| Z-axis translation(tz) | 229.6 | metre |
Derived at Geodetic Survey office in Karachi in 1997.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 230.25 | metre |
| Y-axis translation(ty) | 632.76 | metre |
| Z-axis translation(tz) | 161.03 | metre |
| X-axis rotation(rx) | -1.114 | arc-second |
| Y-axis rotation(ry) | 1.115 | arc-second |
| Z-axis rotation(rz) | 1.212 | arc-second |
| Scale difference(ds) | 12.584 | parts per million |
Derived by Western Geophysical for UTP 1996 East Sind 2D survey. Very similar parameter values (higher resolution but no better accuracy) were used by BGP for the ENI 2006 East Sind 2D survey.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 274.164 | metre |
| Y-axis translation(ty) | 677.282 | metre |
| Z-axis translation(tz) | 226.704 | metre |
Derived by Fugro-Geodetic in 2004 at 6 closely-spaced stations. Used by OMV in all blocks in Pakistan where operator.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 278.9 | metre |
| Y-axis translation(ty) | 684.39 | metre |
| Z-axis translation(tz) | 226.05 | metre |
Derived at station S0001, an approximate offset to Survey of India primary station Kat Baman, in 1992 from 180 single point Transit passes observed in 1991 by Fugro-Geodetic for UTP.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 271.905 | metre |
| Y-axis translation(ty) | 669.593 | metre |
| Z-axis translation(tz) | 231.495 | metre |
Derived at Chitrawala triangulation station by Fugro-Geodetic for UTP.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 283 | metre |
| Y-axis translation(ty) | 682 | metre |
| Z-axis translation(tz) | 231 | metre |
Care! DMA ellipsoid is inconsistent with EPSG ellipsoid - transformation parameter values may not be appropriate. No accuracy estimate available.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4145", "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: Pakistan
+proj=longlat +a=6377301.243 +rf=300.8017255 +no_defs +type=crsMore about EPSG:4145 →
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 →