Convert coordinates from Adindan (EPSG:4201) 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 7 transformations between Adindan (EPSG:4201) 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) | -165 | metre |
| Y-axis translation(ty) | -11 | metre |
| Z-axis translation(tz) | 206 | metre |
Derived at 8 stations. Accuracy 3m in each axis.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -161 | metre |
| Y-axis translation(ty) | -14 | metre |
| Z-axis translation(tz) | 205 | metre |
Derived at 14 stations. Accuracy 3m, 5m and 3m in X, Y and Z axes.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -166 | metre |
| Y-axis translation(ty) | -15 | metre |
| Z-axis translation(tz) | 204 | metre |
Derived at 22 stations. Accuracy 5m in each axis.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -118 | metre |
| Y-axis translation(ty) | -14 | metre |
| Z-axis translation(tz) | 218 | metre |
Derived at 1 station connected to the Adindan (Blue Nile 1958) network through the 1968-69 12th parallel traverse. Accuracy 25m in each axis. Note: the Adindan (Blue Nile 1958) CRS is used in Ethiopia and Sudan, not Burkino Faso.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -134 | metre |
| Y-axis translation(ty) | -2 | metre |
| Z-axis translation(tz) | 210 | metre |
Derived at 1 station connected to the Adindan (Blue Nile 1958) network through the 1968-69 12th parallel traverse. Accuracy 25m in each axis. Note: the Adindan (Blue Nile 1958) CRS is used in Ethiopia and Sudan, not Cameroon.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -123 | metre |
| Y-axis translation(ty) | -20 | metre |
| Z-axis translation(tz) | 220 | metre |
Derived at 1 station connected to the Adindan (Blue Nile 1958) network through the 1968-69 12th parallel traverse. Accuracy 25m in each axis. Note: the Adindan (Blue Nile 1958) CRS is used in Ethiopia and Sudan, not Mali.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -128 | metre |
| Y-axis translation(ty) | -18 | metre |
| Z-axis translation(tz) | 224 | metre |
Derived at 2 stations connected to the Adindan (Blue Nile 1958) network through the 1968-69 12th parallel traverse. Accuracy 25m in each axis. Note: The Adindan (Blue Nile 1958) CRS is used in Ethiopia and Sudan, not Senegal.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4201", "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: Africa - Eritrea, Ethiopia, South Sudan and Sudan
+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-166,-15,204,0,0,0,0 +no_defs +type=crsMore about EPSG:4201 →
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 →