Convert ATRF2014 to GDA94

Convert coordinates from ATRF2014 (EPSG:9307) 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-9307-to-epsg-4938

Official EPSG transformation from ATRF2014 to GDA94

The EPSG Geodetic Parameter Dataset defines 1 transformation between ATRF2014 (EPSG:9307) and GDA94 (EPSG:4938). Its parameters, accuracy and area of use are listed below.

ATRF2014 to GDA94 (1)

EPSG:9684±0.035 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 ATRF2014 to GDA2020 (1) (CT 9459) and GDA94 to GDA2020 (1) (CT 8048). Scale difference in ppb and rate in ppb/yr where 1/billion = 1E-9 or nm/m. See ATRF2014 to GDA94 (2) (CT 9685) for alternative for Australia with distortion modelling.

Convert EPSG:9307 to EPSG:4938 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:9307", "EPSG:4938", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:9307 — ATRF2014

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:9307 →

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 ATRF2014 to GDA94?: The most accurate official EPSG transformation between these systems is accurate to about ±0.035 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:9307 →