Convert coordinates from AGD66 (EPSG:4202) to GDA94 (EPSG:4283) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 13 transformations between AGD66 (EPSG:4202) and GDA94 (EPSG:4283). Each applies to a specific area — pick the one whose area of use covers your data.
Grid file: vic_0799.gsb
Replaced by AGD66 to GDA94 (10) (code 1596) and then by AGD66 to GDA94 (11) (code 1803). Input expects longitudes to be positive west; EPSG GeogCRS AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.
Grid file: tas_1098.gsb
Replaced by AGD66 to GDA94 (11) (code 1803). Input expects longitudes to be positive west; EPSG GeogCRS AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.
Grid file: nt_0599.gsb
Replaced by AGD66 to GDA94 (11) (code 1803). Input expects longitudes to be positive west; EPSG GeogCRS AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.
Grid file: SEAust_21_06_00.gsb
Replaces AGD66 to GDA94 (5) (code 1464). Replaced by AGD66 to GDA94 (11) (code 1803). Input expects longitudes to be positive west; EPSG GeogCRS AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.
Grid file: A66 National (13.09.01).gsb
Replaces AGD66 to GDA94 variants 6, 7 and 10 (codes 1506 1507 1596). Input expects longitudes to be positive west; source and target CRSs AGD66 (code 4202) and GDA94 (code 4283) both have longitudes positive east.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -129.164 | metre |
| Y-axis translation(ty) | -41.188 | metre |
| Z-axis translation(tz) | 130.718 | metre |
| X-axis rotation(rx) | -0.246 | arc-second |
| Y-axis rotation(ry) | -0.374 | arc-second |
| Z-axis rotation(rz) | -0.329 | arc-second |
| Scale difference(ds) | -2.955 | parts per million |
Replaces nationally-derived transformation code 1458.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -129.193 | metre |
| Y-axis translation(ty) | -41.212 | metre |
| Z-axis translation(tz) | 130.73 | metre |
| X-axis rotation(rx) | -0.246 | arc-second |
| Y-axis rotation(ry) | -0.374 | arc-second |
| Z-axis rotation(rz) | -0.329 | arc-second |
| Scale difference(ds) | -2.955 | parts per million |
For higher accuracy requirements see AGD66 to GDA94 (11) (code 1803). May be taken as approximate transformation AGD66 to WGS 84 - see code 1665. See code 5827 for a marginally better accuracy transformation derived locally.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -120.695 | metre |
| Y-axis translation(ty) | -62.73 | metre |
| Z-axis translation(tz) | 165.46 | metre |
| X-axis rotation(rx) | -0.109 | arc-second |
| Y-axis rotation(ry) | 0.141 | arc-second |
| Z-axis rotation(rz) | 0.116 | arc-second |
| Scale difference(ds) | 2.733 | parts per million |
Replaced in 2000 by AGD66 to GDA94 (8) (code 1594). Application gives result differences which are sub-metre.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -119.353 | metre |
| Y-axis translation(ty) | -48.301 | metre |
| Z-axis translation(tz) | 139.484 | metre |
| X-axis rotation(rx) | -0.415 | arc-second |
| Y-axis rotation(ry) | -0.26 | arc-second |
| Z-axis rotation(rz) | -0.437 | arc-second |
| Scale difference(ds) | -0.613 | parts per million |
For higher accuracy requirements see AGD66 to GDA94 (11) (code 1803). May be taken as approximate transformation AGD66 to WGS 84 - see code 1666.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -120.271 | metre |
| Y-axis translation(ty) | -64.543 | metre |
| Z-axis translation(tz) | 161.632 | metre |
| X-axis rotation(rx) | -0.217 | arc-second |
| Y-axis rotation(ry) | 0.067 | arc-second |
| Z-axis rotation(rz) | 0.129 | arc-second |
| Scale difference(ds) | 2.499 | parts per million |
Replaces AGD66 to GDA94 (3) (code 1459) from August 2000. For higher accuracy requirements see AGD66 to GDA94 (11) (code 1803). May be taken as approximate transformation AGD66 to WGS 84 - see code 1667.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -124.133 | metre |
| Y-axis translation(ty) | -42.003 | metre |
| Z-axis translation(tz) | 137.4 | metre |
| X-axis rotation(rx) | 0.008 | arc-second |
| Y-axis rotation(ry) | -0.557 | arc-second |
| Z-axis rotation(rz) | -0.178 | arc-second |
| Scale difference(ds) | -1.854 | parts per million |
For higher accuracy requirements see AGD66 to GDA94 (11) (code 1803). May be taken as approximate transformation AGD66 to WGS 84 - see code 1668.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -117.808 | metre |
| Y-axis translation(ty) | -51.536 | metre |
| Z-axis translation(tz) | 137.784 | metre |
| X-axis rotation(rx) | -0.303 | arc-second |
| Y-axis rotation(ry) | -0.446 | arc-second |
| Z-axis rotation(rz) | -0.234 | arc-second |
| Scale difference(ds) | -0.29 | parts per million |
Use only offshore: onshore, transformations 1458 (ACT), 1594 (Tas), 1460 (NSW and Vic) and 1595 (NT) are more accurate.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -127.8 | metre |
| Y-axis translation(ty) | -52.3 | metre |
| Z-axis translation(tz) | 152.9 | metre |
Given to greater precision but no better accuracy at http://www.dehaa.sa.gov.au For higher accuracy requirements see various regional transformations. May be taken as approximate transformation AGD66 to WGS 84 - see code 15788. Derived at 162 stations.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4202", "EPSG:4283", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geographic system using latitude and longitude on an ellipsoid · Area of use: Australasia - Australia and PNG - AGD66
+proj=longlat +ellps=aust_SA +no_defs +type=crsMore about EPSG:4202 →
geographic system using latitude and longitude on an ellipsoid · Area of use: Australia - GDA
+proj=longlat +ellps=GRS80 +no_defs +type=crsMore about EPSG:4283 →