EPSG systems

EPSG:2044 Hanoi 1972 / Gauss-Kruger zone 18

Projected system (Transverse Mercator) in use: Vietnam - west of 108°E onshore. The full definition below, and conversion in one click.

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System record
Code	EPSG:2044
Name	Hanoi 1972 / Gauss-Kruger zone 18
Type	Projected system — Transverse Mercator
Area of use	Vietnam - west of 108°E onshore Vietnam - onshore west of 108°E.
Bounds	W 102,14° · S 8,33° · E 108,00° · N 23,40°
Countries	Vietnam
Datum	Hanoi 1972
Ellipsoid	Krassowsky 1940 a = 6378245 m · 1/f = 298.3
Base geographic system	EPSG:4147 — Hanoi 1972
Unit	metre (X north, Y east)
Transformation to WGS 84	Hanoi 1972 to WGS 84 (1) (EPSG:1544) — accuracy 5 m
Scope	Engineering survey, topographic mapping.

Projection parameters

Parameter	Value	Unit
Latitude of natural origin	0	degree
Longitude of natural origin	105	degree
Scale factor at natural origin	1	unity
False easting	18500000	metre
False northing	0	metre

proj4 definition

+proj=tmerc +lat_0=0 +lon_0=105 +k=1 +x_0=18500000 +y_0=0 +ellps=krass +units=m +towgs84=-17.51,-108.32,-62.39 +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:2044.

WKT (ESRI format, the .prj content)

PROJCS["Hanoi_1972_GK_Zone_18",GEOGCS["GCS_Hanoi_1972",DATUM["D_Hanoi_1972",SPHEROID["Krasovsky_1940",6378245.0,298.3]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Gauss_Kruger"],PARAMETER["False_Easting",18500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",105.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Vietnam

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 — Vietnam