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Convert GDA94 to WGS 84 (G1762)

Convert coordinates from GDA94 (EPSG:4283) to WGS 84 (G1762) (EPSG:9057) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4283-to-epsg-9057

Official EPSG transformation from GDA94 to WGS 84 (G1762)

The EPSG Geodetic Parameter Dataset defines 1 transformation between GDA94 (EPSG:4283) and WGS 84 (G1762) (EPSG:9057). Its parameters, accuracy and area of use are listed below.

GDA94 to WGS 84 (G1762) (2)

EPSG:9687±0.25 m
Method:
Concatenated operation
Area of use:
Australia - onshore
Scope:
Transformation of GDA94 coordinates when localised distortion needs to be taken into account, e.g. if GDA94 coordinates were derived from survey control monuments.
  1. GDA94 to GDA2020 (2) (null)
  2. GDA2020 to WGS 84 (G1762) (1) (null)

See GDA94 to WGS 84 (G1762) (1) (CT code 9686) for conformal-only alternative (i.e. without distortion modelling).

Convert EPSG:4283 to EPSG:9057 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4283", "EPSG:9057", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4283 — GDA94

geographic system using latitude and longitude on an ellipsoid · Area of use: Australia - GDA

+proj=longlat +ellps=GRS80 +no_defs +type=crs
More about EPSG:4283 →

Target: EPSG:9057 — WGS 84 (G1762)

geographic system using latitude and longitude on an ellipsoid · Area of use: World

+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs
More about EPSG:9057 →

Frequently asked questions

How accurate is converting GDA94 to WGS 84 (G1762)?
The most accurate official EPSG transformation between these systems is accurate to about ±0.25 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:9057 to EPSG:4283 →