Convert ITRF2000 to GDA94

Convert coordinates from ITRF2000 (EPSG:4919) 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-4919-to-epsg-4938

Official EPSG transformations from ITRF2000 to GDA94

The EPSG Geodetic Parameter Dataset defines 2 transformations between ITRF2000 (EPSG:4919) and GDA94 (EPSG:4938). Each applies to a specific area — pick the one whose area of use covers your data.

ITRF2000 to GDA94 (2)

EPSG:6278±0.06 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)	-45.91	millimetre
Y-axis translation(ty)	-29.85	millimetre
Z-axis translation(tz)	-20.37	millimetre
X-axis rotation(rx)	-1.6705	milliarc-second
Y-axis rotation(ry)	0.4594	milliarc-second
Z-axis rotation(rz)	1.9356	milliarc-second
Scale difference(ds)	7.07	parts per billion
rate tx	-4.66	millimetres per year
rate ty	3.55	millimetres per year
rate tz	11.24	millimetres per year
rate rx	1.7454	milliarc-seconds per year
rate ry	1.4868	milliarc-seconds per year
rate rz	1.224	milliarc-seconds per year
rate ds	0.249	parts per billion per year
epoch	1994	year

RMS residuals 3mm N, 8mm E and 55mm up, maximum residuals 5mm N, 13mm E and 84mm 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, tfm code 6315.

ITRF2000 to GDA94 (1)

EPSG:6315±0.1 m

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

Parameter	Value	Unit
X-axis translation(tx)	-0.0761	metre
Y-axis translation(ty)	-0.0101	metre
Z-axis translation(tz)	0.0444	metre
X-axis rotation(rx)	0.008765	arc-second
Y-axis rotation(ry)	0.009361	arc-second
Z-axis rotation(rz)	0.009325	arc-second
Scale difference(ds)	0.007935	parts per million
rate tx	0.011	metres per year
rate ty	-0.0045	metres per year
rate tz	-0.0174	metres per year
rate rx	0.001034	arc-seconds per year
rate ry	0.000671	arc-seconds per year
rate rz	0.001039	arc-seconds per year
rate ds	-0.000538	parts per million per year
epoch	2000	year

Replaced by Dawson and Woods transformation of 2010, tfm code 6278.

Convert EPSG:4919 to EPSG:4938 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4919", "EPSG:4938", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4919 — ITRF2000

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

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

More about EPSG:4919 →

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 ITRF2000 to GDA94?: The most accurate official EPSG transformation between these systems is accurate to about ±0.06 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:4919 →