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Convert ATRF2014 to GDA94

Convert coordinates from ATRF2014 (EPSG:9309) to GDA94 (EPSG:4283) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-9309-to-epsg-4283

Official EPSG transformation from ATRF2014 to GDA94

The EPSG Geodetic Parameter Dataset defines 1 transformation between ATRF2014 (EPSG:9309) and GDA94 (EPSG:4283). Its parameters, accuracy and area of use are listed below.

ATRF2014 to GDA94 (2)

EPSG:9685±0.06 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. ATRF2014 to GDA2020 (1) (null)
  2. GDA94 to GDA2020 (2) (null)

See ATRF2014 to GDA94 (1) (CT 9684) for conformal-only alternative (i.e. without distortion modelling).

Convert EPSG:9309 to EPSG:4283 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:9309", "EPSG:4283", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:9309 — ATRF2014

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:9309 →

Target: 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 →

Frequently asked questions

How accurate is converting ATRF2014 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:4283 to EPSG:9309 →