EPSG systems

EPSG:3331 Pulkovo 1942(58) / 3-degree Gauss-Kruger zone 7

Projected system (Transverse Mercator) in use: Europe - 19.5°E to 22.5°E onshore and S-42(58) by country. The full definition below, and conversion in one click.

System record
CodeEPSG:3331
NamePulkovo 1942(58) / 3-degree Gauss-Kruger zone 7
TypeProjected system — Transverse Mercator
Area of use Europe - 19.5°E to 22.5°E onshore and S-42(58) by country
Albania - east of 19°30'E. Bulgaria and Romania - west of 22°30'E. Hungary, Poland and Slovakia - between 19°30'E and 22°30'E.
Bounds W 19,50° · S 39,64° · E 22,50° · N 54,51°
Also covers Albania, Bulgaria, Romania, Slovakia, Hungary, Poland
DatumPulkovo 1942(58)
Ellipsoid Krassowsky 1940 a = 6378245 m · 1/f = 298.3
Base geographic system EPSG:4179 — Pulkovo 1942(58)
Unit metre (X north, Y east)
Transformation to WGS 84 Pulkovo 1942(58) to WGS 84 (1) (EPSG:1645) — accuracy 1 m
ScopeMilitary survey.

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin21degree
Scale factor at natural origin1unity
False easting7500000metre
False northing0metre

proj4 definition

+proj=tmerc +lat_0=0 +lon_0=21 +k=1 +x_0=7500000 +y_0=0 +ellps=krass +units=m +towgs84=33.4,-146.6,-76.3,-0.359,-0.053,0.844,-0.84 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:3331.

WKT (ESRI format, the .prj content)

PROJCS["Pulkovo_1942_Adj_1958_3_Degree_GK_Zone_7",GEOGCS["GCS_Pulkovo_1942_Adj_1958",DATUM["D_Pulkovo_1942_Adj_1958",SPHEROID["Krasovsky_1940",6378245.0,298.3]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Gauss_Kruger"],PARAMETER["False_Easting",7500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",21.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Albania

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.