Convert PZ-90 to WGS 84

Convert coordinates from PZ-90 (EPSG:4740) 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-4740-to-epsg-4326

Official EPSG transformations from PZ-90 to WGS 84

The EPSG Geodetic Parameter Dataset defines 2 transformations between PZ-90 (EPSG:4740) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.

PZ-90 to WGS 84 (2)

EPSG:1244±0.5 mBest accuracy

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Russia
Scope:: Geodesy.

Parameter	Value	Unit
X-axis translation(tx)	-1.08	metre
Y-axis translation(ty)	-0.27	metre
Z-axis translation(tz)	-0.9	metre
X-axis rotation(rx)	0	arc-second
Y-axis rotation(ry)	0	arc-second
Z-axis rotation(rz)	-0.16	arc-second
Scale difference(ds)	-0.12	parts per million

Mandated for use in Russia by GosStandard of Russia Decree #327 of August 9, 2001. Republished but with one significant figure less precision to parameter values in GOST R 51794-2008 of December 18 2008.

PZ-90 to WGS 84 (1)

EPSG:15843±1.5 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: World
Scope:: Geodesy.

Parameter	Value	Unit
X-axis translation(tx)	0	metre
Y-axis translation(ty)	0	metre
Z-axis translation(tz)	1.5	metre
X-axis rotation(rx)	0	arc-second
Y-axis rotation(ry)	0	arc-second
Z-axis rotation(rz)	-0.076	arc-second
Scale difference(ds)	0	parts per million

Derived through Glonass and GPS at 30 stations throughout USSR - Former Soviet Union (FSU). Accuracy better than 1.5 metres.

Convert EPSG:4740 to EPSG:4326 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4740", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4740 — PZ-90

geographic system using latitude and longitude on an ellipsoid · Area of use: World

+proj=longlat +a=6378136 +rf=298.257839303 +towgs84=0,0,1.5,0,0,0.076,0 +no_defs +type=crs

More about EPSG:4740 →

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 PZ-90 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:4740 →