Convert ITRF96 to GDA94

Convert coordinates from ITRF96 (EPSG:4917) to GDA94 (EPSG:4938) — 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-4917-to-epsg-4938

Official EPSG transformations from ITRF96 to GDA94

The EPSG Geodetic Parameter Dataset defines 2 transformations between ITRF96 (EPSG:4917) and GDA94 (EPSG:4938). Each applies to a specific area — pick the one whose area of use covers your data.

ITRF96 to GDA94 (1)

EPSG:6313±0.1 mBest accuracy

Method:: Time-dependent Coordinate Frame rotation (geocen)
Area of use:: Australia - onshore and EEZ
Scope:: Geodesy.

Parameter	Value	Unit
X-axis translation(tx)	-0.014	metre
Y-axis translation(ty)	0.0431	metre
Z-axis translation(tz)	0.201	metre
X-axis rotation(rx)	0.012464	arc-second
Y-axis rotation(ry)	0.012013	arc-second
Z-axis rotation(rz)	0.006434	arc-second
Scale difference(ds)	0.024607	parts per million
rate tx	0.0411	metres per year
rate ty	0.0218	metres per year
rate tz	0.0383	metres per year
rate rx	0.002542	arc-seconds per year
rate ry	0.001431	arc-seconds per year
rate rz	-0.000234	arc-seconds per year
rate ds	0.005897	parts per million per year
epoch	2000	year

Replaced by Dawson and Woods transformation of 2010, code 6280.

ITRF96 to GDA94 (2)

EPSG:6280±0.11 m

Method:: Time-dependent Coordinate Frame rotation (geocen)
Area of use:: Australia - onshore and EEZ
Scope:: Geodesy.

Parameter	Value	Unit
X-axis translation(tx)	24.54	millimetre
Y-axis translation(ty)	-36.43	millimetre
Z-axis translation(tz)	-68.12	millimetre
X-axis rotation(rx)	-2.7359	milliarc-second
Y-axis rotation(ry)	-2.0431	milliarc-second
Z-axis rotation(rz)	0.3731	milliarc-second
Scale difference(ds)	6.901	parts per billion
rate tx	-21.8	millimetres per year
rate ty	4.71	millimetres per year
rate tz	26.27	millimetres per year
rate rx	2.0203	milliarc-seconds per year
rate ry	2.1735	milliarc-seconds per year
rate rz	1.629	milliarc-seconds per year
rate ds	0.388	parts per billion per year
epoch	1994	year

RMS residuals 22mm N, 56mm E and 90mm up, maximum residuals 49mm N, 126mm E and 193mm up. Scale difference in ppb and scale difference rate in ppb/yr where 1/billion = 1E-9 or nm/m. Replaces 2001 transformation by Dawson and Steed, code 6313.

Convert EPSG:4917 to EPSG:4938 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4917", "EPSG:4938", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4917 — ITRF96

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

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

More about EPSG:4917 →

Target: 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 →

Frequently asked questions

How accurate is converting ITRF96 to GDA94?: The most accurate official EPSG transformation between these systems is accurate to about ±0.1 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:4938 to EPSG:4917 →