EPSG systems

EPSG:26937 NAD83 / Alaska zone 7

Projected system (Transverse Mercator) in use: USA - Alaska - 164°W to 160°W. The full definition below, and conversion in one click.

System record
CodeEPSG:26937
NameNAD83 / Alaska zone 7
TypeProjected system — Transverse Mercator
Area of use USA - Alaska - 164°W to 160°W
United States (USA) - Alaska - between 164°W and 160°W, onshore.
Bounds W -164,01° · S 54,32° · E -160,00° · N 70,74°
Countries United States
DatumNorth American Datum 1983
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:4269 — NAD83
Unit metre (X east, Y north)
Transformation to WGS 84 NAD83 to WGS 84 (1) (EPSG:1188) — accuracy 4 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin54degree
Longitude of natural origin-162degree
Scale factor at natural origin0.9999unity
False easting500000metre
False northing0metre

proj4 definition

+proj=tmerc +lat_0=54 +lon_0=-162 +k=0.9999 +x_0=500000 +y_0=0 +a=6378137 +rf=298.257222101 +units=m +towgs84=0,0,0 +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:26937.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_StatePlane_Alaska_7_FIPS_5007",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-162.0],PARAMETER["Scale_Factor",0.9999],PARAMETER["Latitude_Of_Origin",54.0],UNIT["Meter",1.0]]

All systems — United States

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