Convert Pulkovo 1942 to PZ-90

Convert coordinates from Pulkovo 1942 (EPSG:4284) to PZ-90 (EPSG:4740) — 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-4284-to-epsg-4740

Official EPSG transformation from Pulkovo 1942 to PZ-90

The EPSG Geodetic Parameter Dataset defines 1 transformation between Pulkovo 1942 (EPSG:4284) and PZ-90 (EPSG:4740). Its parameters, accuracy and area of use are listed below.

Pulkovo 1942 to PZ-90 (1)

EPSG:15844±4 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Europe - FSU onshore
Scope:: Topographic mapping.

Parameter	Value	Unit
X-axis translation(tx)	25	metre
Y-axis translation(ty)	-141	metre
Z-axis translation(tz)	-80	metre
X-axis rotation(rx)	0	arc-second
Y-axis rotation(ry)	-0.35	arc-second
Z-axis rotation(rz)	-0.66	arc-second
Scale difference(ds)	0	parts per million

Derived through Glonass at 30 stations throughout USSR - Former Soviet Union (FSU). Mandated for use in Russia by GosStandard of Russia Decree #327 of August 9, 2001.

Convert EPSG:4284 to EPSG:4740 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4284", "EPSG:4740", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4284 — Pulkovo 1942

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

+proj=longlat +ellps=krass +towgs84=25,-141,-78.5,0,0.35,0.736,0 +no_defs +type=crs

More about EPSG:4284 →

Target: 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 →

Frequently asked questions

How accurate is converting Pulkovo 1942 to PZ-90?: The most accurate official EPSG transformation between these systems is accurate to about ±4 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:4740 to EPSG:4284 →