EPSG systems

EPSG:2324 ED50 / TM42

Projected system (Transverse Mercator) in use: Turkey - 40.5°E to 43.5°E onshore. The full definition below, and conversion in one click.

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System record
Code	EPSG:2324
Name	ED50 / TM42
Type	Projected system — Transverse Mercator
Area of use	Turkey - 40.5°E to 43.5°E onshore Türkiye (Turkey) - between 40°30'E and 43°30'E, onshore.
Bounds	W 40,50° · S 37,02° · E 43,50° · N 41,60°
Countries	Türkiye
Datum	European Datum 1950
Ellipsoid	International 1924 a = 6378388 m · 1/f = 297
Base geographic system	EPSG:4230 — ED50
Unit	metre (X north, Y east)
Transformation to WGS 84	ED50 to WGS 84 (30) (EPSG:1784) — accuracy 2 m
Scope	Cadastre, engineering survey, topographic mapping (large scale).

Projection parameters

Parameter	Value	Unit
Latitude of natural origin	0	degree
Longitude of natural origin	42	degree
Scale factor at natural origin	1	unity
False easting	500000	metre
False northing	0	metre

proj4 definition

+proj=tmerc +lat_0=0 +lon_0=42 +k=1 +x_0=500000 +y_0=0 +ellps=intl +units=m +towgs84=-84.1,-101.8,-129.7,0,0,0.468,1.05 +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:2324.

WKT (ESRI format, the .prj content)

PROJCS["ED_1950_TM42",GEOGCS["GCS_European_1950",DATUM["D_European_1950",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",42.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Türkiye

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

Projection parameters

proj4 definition

WKT (ESRI format, the .prj content)

Other systems — Türkiye