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Convert Indian 1954 to WGS 84

Convert coordinates from Indian 1954 (EPSG:4239) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4239-to-epsg-4326

Official EPSG transformation from Indian 1954 to WGS 84

The EPSG Geodetic Parameter Dataset defines 1 transformation between Indian 1954 (EPSG:4239) and WGS 84 (EPSG:4326). Its parameters, accuracy and area of use are listed below.

Indian 1954 to WGS 84 (1)

EPSG:1153±21 m
Method:
Geocentric translations (geog2D domain)
Area of use:
Thailand - onshore
Scope:
Military survey.
ParameterValueUnit
X-axis translation(tx)217metre
Y-axis translation(ty)823metre
Z-axis translation(tz)299metre

Derived at 11 stations. Accuracy 15m, 6m and 12m in X, Y and Z axes.

Convert EPSG:4239 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4239", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4239Indian 1954

geographic system using latitude and longitude on an ellipsoid · Area of use: Asia - Myanmar and Thailand onshore

+proj=longlat +ellps=evrst30 +no_defs +type=crs
More about EPSG:4239

Target: EPSG:4326WGS 84

geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)

+proj=longlat +datum=WGS84 +no_defs +type=crs
More about EPSG:4326

Frequently asked questions

How accurate is converting Indian 1954 to WGS 84?
The most accurate official EPSG transformation between these systems is accurate to about ±21 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation in a desktop GIS.
Does my data leave the browser when I use this converter?
No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.
Need the reverse? Convert EPSG:4326 to EPSG:4239