EPSG systems

EPSG:9404 PN68 / UTM zone 27N

Projected system (Transverse Mercator) in use: Spain - Canary Islands - El Hierro west of 18°W. The full definition below, and conversion in one click.

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System record
Code	EPSG:9404
Name	PN68 / UTM zone 27N
Type	Projected system — Transverse Mercator
Area of use	Spain - Canary Islands - El Hierro west of 18°W Spain - Canary Islands - El Hierro onshore west of 18°W.
Bounds	W -18,22° · S 27,59° · E -18,00° · N 27,88°
Countries	Spain
Datum	Pico de las Nieves 1968
Ellipsoid	International 1924 a = 6378388 m · 1/f = 297
Base geographic system	EPSG:9403 — PN68
Unit	metre (E east, N north)
Transformation to WGS 84	PN68 to WGS 84 (1) (EPSG:9743) — accuracy 44 m
Scope	Geodesy, engineering survey, topographic mapping.

Projection parameters

Parameter	Value	Unit
Latitude of natural origin	0	degree
Longitude of natural origin	-21	degree
Scale factor at natural origin	0.9996	unity
False easting	500000	metre
False northing	0	metre

proj4 definition

+proj=utm +zone=27 +ellps=intl +units=m +towgs84=-307,-92,127 +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:9404.

WKT (ESRI format, the .prj content)

PROJCS["PN68_UTM_zone_27N",GEOGCS["GCS_PN68",DATUM["Pico_de_las_Nieves_1968",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",-21.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Spain

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 — Spain