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Convert PSD93 to WGS 84

Convert coordinates from PSD93 (EPSG:4134) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

Direct link to this transformation: epsgtransform.com/transform/epsg-4134-to-epsg-4326

Official EPSG transformations from PSD93 to WGS 84

The EPSG Geodetic Parameter Dataset defines 3 transformations between PSD93 (EPSG:4134) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

PSD93 to WGS 84 (1)

EPSG:1439±0.5 mBest accuracy
Method:
Position Vector transformation (geog2D domain)
Area of use:
Oman - onshore
Scope:
Oil and gas exploration and production.
ParameterValueUnit
X-axis translation(tx)-180.624metre
Y-axis translation(ty)-225.516metre
Z-axis translation(tz)173.919metre
X-axis rotation(rx)-0.81arc-second
Y-axis rotation(ry)-1.898arc-second
Z-axis rotation(rz)8.336arc-second
Scale difference(ds)16.71006parts per million

Residuals 0.5m at 67% probability level. Replaced PSD93 to WGS 84 (2) (code 8581) in 1997.

PSD93 to WGS 84 (3)

EPSG:1617±0.5 m
Method:
Position Vector transformation (geog2D domain)
Area of use:
Oman - block 4
Scope:
Oil and gas exploration and production.
ParameterValueUnit
X-axis translation(tx)-191.808metre
Y-axis translation(ty)-250.512metre
Z-axis translation(tz)167.861metre
X-axis rotation(rx)-0.792arc-second
Y-axis rotation(ry)-1.653arc-second
Z-axis rotation(rz)8.558arc-second
Scale difference(ds)20.703parts per million

Accuracy better than 0.5m in block 4.

PSD93 to WGS 84 (2)

EPSG:8581±2.5 m
Method:
Concatenated operation
Area of use:
Oman - onshore
Scope:
Oil and gas exploration and production.
  1. PSD93 to WGS 72 (1) (null)
  2. WGS 72 to WGS 84 (1) (null)

Replaced by PSD93 to WGS 84 (1) (code 1439) in 1997. Can be implemented as a position vector tfm with parameter values dX= -182.046 dY= -225.604 dZ=+173.384m rX= -0.616 rY= -1.655 rZ=+8.378" dS=16.8673ppm.

Convert EPSG:4134 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4134", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4134 — PSD93

geographic system using latitude and longitude on an ellipsoid · Area of use: Oman - onshore

+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-180.624,-225.516,173.919,-0.81,-1.898,8.336,16.71006 +no_defs +type=crs
More about EPSG:4134 →

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 PSD93 to WGS 84?
The most accurate official EPSG transformation between these systems is accurate to about ±0.5 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:4326 to EPSG:4134 →