EPSG systems

EPSG:3304 Tahiti 79 / UTM zone 6S

Projected system (Transverse Mercator) in use: French Polynesia - Society Islands - Tahiti. The full definition below, and conversion in one click.

System record
CodeEPSG:3304
NameTahiti 79 / UTM zone 6S
TypeProjected system — Transverse Mercator
Area of use French Polynesia - Society Islands - Tahiti
Bounds W -149,70° · S -17,93° · E -149,09° · N -17,44°
Countries French Polynesia
DatumTahiti 79
Ellipsoid International 1924 a = 6378388 m · 1/f = 297
Base geographic system EPSG:4690 — Tahiti 79
Unit metre (E east, N north)
Transformation to WGS 84 Tahiti 79 to WGS 84 (2) (EPSG:8830) — accuracy 1 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin-147degree
Scale factor at natural origin0.9996unity
False easting500000metre
False northing10000000metre

proj4 definition

+proj=utm +zone=6 +south +ellps=intl +units=m +towgs84=221.597,152.441,176.523,2.403,1.3893,0.884,11.4648 +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:3304.

WKT (ESRI format, the .prj content)

PROJCS["Tahiti_1979_UTM_Zone_6S",GEOGCS["GCS_Tahiti_1979",DATUM["D_Tahiti_1979",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",10000000.0],PARAMETER["Central_Meridian",-147.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — French Polynesia

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