Convert AGD66 to WGS 84

Convert coordinates from AGD66 (EPSG:4202) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (lon, lat (decimal degrees))

Output (lon, lat (decimal degrees))

Direct link to this transformation: epsgtransform.com/transform/epsg-4202-to-epsg-4326

Official EPSG transformations from AGD66 to WGS 84

The EPSG Geodetic Parameter Dataset defines 13 transformations between AGD66 (EPSG:4202) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

AGD66 to WGS 84 (19)

EPSG:5841±2 mBest accuracy

Method:: Geocentric translations (geog2D domain)
Area of use:: Papua New Guinea - PFTB
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-124	metre
Y-axis translation(ty)	-60	metre
Z-axis translation(tz)	154	metre

Derived at 25 stations in 2007. Accuracy 2m in 2007. Due to significant tectonic activity in PNG, AGD66 and WGS 84 are separating by approximately 7cm per year.

AGD66 to WGS 84 (17)

EPSG:15786±2.9 m

Method:: NTv2
Area of use:: Australia - onshore
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Grid file: A66 National (13.09.01).gsb

Parameter values from AGD66 to GDA94 (11) (code 1803). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.

AGD66 to WGS 84 (12)

EPSG:1665±3 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Australia - Australian Capital Territory
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

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

Parameter values from AGD66 to GDA94 (2) (code 1458). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.

AGD66 to WGS 84 (13)

EPSG:1666±3 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Australia - New South Wales and Victoria
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

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

Parameter values from AGD66 to GDA94 (4) (code 1460). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.

AGD66 to WGS 84 (14)

EPSG:1667±3 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Australia - Tasmania
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

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

Parameter values from AGD66 to GDA94 (8) (code 1594). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.

AGD66 to WGS 84 (15)

EPSG:1668±3 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Australia - Northern Territory
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

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

Parameter values from AGD66 to GDA94 (9) (code 1595). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.

AGD66 to WGS 84 (18)

EPSG:15980±3 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Australia - offshore
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

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

Parameter values from AGD66 to GDA94 (12) (code 15979). Assumes WGS 84 is equivalent to GDA94; ignores low accuracy of ensemble and tectonic plate motion. Use only offshore: onshore CTs 1665-68 for ACT, NSW/Vic, Tas and NT respectively are more accurate.

AGD66 to WGS 84 (22)

EPSG:6944±4 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Papua New Guinea - PFTB
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Parameter	Value	Unit
X-axis translation(tx)	-131.3	metre
Y-axis translation(ty)	-55.3	metre
Z-axis translation(tz)	151.8	metre

Parameter values taken from AGD66 to PNG94 (5) (code 6940). Approximation at the +/- 4m level assuming that PNG94 is equivalent to WGS 84 within the accuracy of the transformation.

AGD66 to WGS 84 (23)

EPSG:6945±4 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Papua New Guinea - North Fly
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Parameter	Value	Unit
X-axis translation(tx)	-137.4	metre
Y-axis translation(ty)	-58.9	metre
Z-axis translation(tz)	150.4	metre

Parameter values taken from AGD66 to PNG94 (7) (code 6942). Approximation at the +/- 4m level assuming that PNG94 is equivalent to WGS 84 within the accuracy of the transformation.

AGD66 to WGS 84 (21)

EPSG:6943±5 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Papua New Guinea - mainland onshore
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Parameter	Value	Unit
X-axis translation(tx)	-129	metre
Y-axis translation(ty)	-58	metre
Z-axis translation(tz)	152	metre

Parameter values taken from AGD66 to PNG94 (3) (code 6938). Approximation at the +/- 5m level assuming that PNG94 is equivalent to WGS 84 within the accuracy of the transformation.

AGD66 to WGS 84 (16)

EPSG:15788±5 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Australia - onshore
Scope:: (null/copy) Approximation for medium and low accuracy applications assuming equality between plate-fixed static and earth-fixed dynamic CRSs, ignoring static/dynamic CRS differences.

Parameter	Value	Unit
X-axis translation(tx)	-127.8	metre
Y-axis translation(ty)	-52.3	metre
Z-axis translation(tz)	152.9	metre

Parameter values from AGD66 to GDA94 (1) (code 1278). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.

AGD66 to WGS 84 (1)

EPSG:1108±6 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Australia - onshore
Scope:: Military survey.

Parameter	Value	Unit
X-axis translation(tx)	-133	metre
Y-axis translation(ty)	-48	metre
Z-axis translation(tz)	148	metre

Derived at 105 stations. Accuracy 3m in each axis. Replaced by AGD66 to WGS 84 (20) (code 6905).

AGD66 to WGS 84 (20)

EPSG:6905±9 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Australia - onshore
Scope:: Military survey.

Parameter	Value	Unit
X-axis translation(tx)	-128	metre
Y-axis translation(ty)	-52	metre
Z-axis translation(tz)	153	metre

Derived at 161 stations. Accuracy 5m in each axis. Replaces AGD66 to WGS 84 (1) (code 1108).

Convert EPSG:4202 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4202", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4202 — AGD66

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=crs

More about EPSG:4202 →

Target: EPSG:4326 — WGS 84

geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)

+proj=longlat +datum=WGS84 +no_defs +type=crs

More about EPSG:4326 →

Frequently asked questions

How accurate is converting AGD66 to WGS 84?: The most accurate official EPSG transformation between these systems is accurate to about ±2 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation (including the grid-shift files listed below) 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:4326 to EPSG:4202 →