Convert GDA94 to WGS 84 (G1762)

Convert coordinates from GDA94 (EPSG:4938) to WGS 84 (G1762) (EPSG:7664) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (x, y)

Output (x, y)

Direct link to this transformation: epsgtransform.com/transform/epsg-4938-to-epsg-7664

Official EPSG transformation from GDA94 to WGS 84 (G1762)

The EPSG Geodetic Parameter Dataset defines 1 transformation between GDA94 (EPSG:4938) and WGS 84 (G1762) (EPSG:7664). Its parameters, accuracy and area of use are listed below.

GDA94 to WGS 84 (G1762) (1)

EPSG:9686±0.25 m

Method:: Time-dependent Coordinate Frame rotation (geocen)
Area of use:: Australia - GDA
Scope:: Transformation of GDA94 coordinates that have been derived through GNSS CORS.

Parameter	Value	Unit
X-axis translation(tx)	61.55	millimetre
Y-axis translation(ty)	-10.87	millimetre
Z-axis translation(tz)	-40.19	millimetre
X-axis rotation(rx)	-39.4924	milliarc-second
Y-axis rotation(ry)	-32.7221	milliarc-second
Z-axis rotation(rz)	-32.8979	milliarc-second
Scale difference(ds)	-9.994	parts per billion
rate tx	0	millimetres per year
rate ty	0	millimetres per year
rate tz	0	millimetres per year
rate rx	-1.50379	milliarc-seconds per year
rate ry	-1.18346	milliarc-seconds per year
rate rz	-1.20716	milliarc-seconds per year
rate ds	0	parts per billion per year
epoch	2020	year

Concatenation of transformations codes 8048 and 8448 through GDA2020. Scale difference in ppb and rate in ppb/yr where 1/billion = 1E-9 or nm/m. See GDA94 to WGS 84 (G1762) (2) (CT 9687) for alternative for Australia with distortion modelling.

Convert EPSG:4938 to EPSG:7664 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4938", "EPSG:7664", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4938 — GDA94

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: Australia - GDA

+proj=geocent +ellps=GRS80 +units=m +no_defs +type=crs

More about EPSG:4938 →

Target: EPSG:7664 — WGS 84 (G1762)

geocentric Cartesian system (Earth-centred Earth-fixed) · Area of use: World

+proj=geocent +ellps=WGS84 +units=m +no_defs +type=crs

More about EPSG:7664 →

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:7664 to EPSG:4938 →