EPSG Library · Americas and Asia-Pacific

EPSG:26912 — NAD83 / UTM zone 12N

Source: EPSG Dataset via PROJ 9.5.1 · Updated 2026-10-05

Summary

EPSG:26912 (NAD83 / UTM zone 12N) is a projected coordinate reference system on the North American Datum 1983 datum using the Transverse Mercator method, with coordinates in metres. Area of use: North America - between 114°W and 108°W - onshore and offshore.

Type: projected
Datum: North American Datum 1983
Units: metre
Axes: E, N
Central meridian: -111°

Definition

EPSG:26912 as published in the EPSG Dataset (PROJ 9.5.1).
Property	Value
EPSG code	EPSG:26912
Name	NAD83 / UTM zone 12N
Type	Projected CRS
Datum	North American Datum 1983
Ellipsoid	GRS 1980 (a = 6,378,137.000 m, 1/f = 298.257222)
Prime meridian	Greenwich
Projection method	Transverse Mercator
Axes	Easting (E, east, metre); Northing (N, north, metre)
Scope	Engineering survey, topographic mapping.
Bounding box	-114° to -108° longitude, 31.33° to 84° latitude

Area of use

North America - between 114°W and 108°W - onshore and offshore. Canada - Alberta; Northwest Territories; Nunavut; Saskatchewan. United States (USA) - Arizona; Colorado; Idaho; Montana; New Mexico; Utah; Wyoming.

Projection parameters

Transverse Mercator parameters.
Parameter	Value	Unit
Latitude of natural origin	0	degree
Longitude of natural origin	-111	degree
Scale factor at natural origin	0.9996	unity
False easting	500,000	metre
False northing	0	metre

Example coordinates

A WGS 84 point at longitude -109.5°, latitude 40.0° (inside the area of use) has these coordinates in EPSG:26912:

Computed with PROJ using the EPSG default operation: axis order change (2D) + Inverse of NAD83 to WGS 84 (1) + UTM zone 12N.
Axis	Value	Unit
E	628,042.122	m
N	4,428,834.709	m

At this point the projection scale factor is 0.99980183 and the grid convergence is +0.964312°.

Open this conversion in the coordinate converter

Transformations to WGS 84

Candidate operations from the EPSG Dataset, best first as ranked by PROJ.
Operation	Accuracy	Area of use
axis order change (2D) + NAD83 to WGS 84 (1) + axis order change (2D)	4 m	North America - onshore and offshore: Canada - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon. United States (USA) - Alabama; Alaska (mainland); Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming.
axis order change (2D) + NAD83 to WGS 84 (3) + axis order change (2D)	4 m	United States (USA) - Hawaii - main islands onshore and offshore.
axis order change (2D) + NAD83 to WGS 84 (2) + axis order change (2D)	8 m	United States (USA) - Alaska - Aleutian Islands onshore.

Transformations change the datum, so each has an accuracy and an area of use. Choose the most accurate one that covers your data and record its name. See datum transformations.

Grid-based operations not bundled with standard PROJ installs: NAD83 to WGS 84 (6); NAD83 to WGS 84 (8); NAD83 to WGS 84 (7); NAD83 to WGS 84 (38).

Definitions and downloads

PROJ string

+proj=utm +zone=12 +datum=NAD83 +units=m +no_defs +type=crs

A PROJ string cannot carry every EPSG detail (axis order, datum ensemble, transformations). Prefer WKT2 or the EPSG code itself.

Proj4js definition used by the converter

+proj=utm +zone=12 +datum=NAD83 +units=m +no_defs

No datum shift is needed: this CRS is on WGS 84 or a datum Proj4js treats as equivalent at the metre level.

WKT2:2019

PROJCRS["NAD83 / UTM zone 12N", BASEGEOGCRS["NAD83", DATUM["North American Datum 1983", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4269]], CONVERSION["UTM zone 12N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-111, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["North America - between 114°W and 108°W - onshore and offshore. Canada - Alberta; Northwest Territories; Nunavut; Saskatchewan. United States (USA) - Arizona; Colorado; Idaho; Montana; New Mexico; Utah; Wyoming."], BBOX[31.33,-114,84,-108]], ID["EPSG",26912]]

Downloads

26912.prj — ESRI WKT for shapefiles
26912.wkt — OGC WKT2:2019

FAQ

What is EPSG:26912?

Where can EPSG:26912 be used?

Its area of use is: North America - between 114°W and 108°W - onshore and offshore. Canada - Alberta; Northwest Territories; Nunavut; Saskatchewan. United States (USA) - Arizona; Colorado; Idaho; Montana; New Mexico; Utah; Wyoming.

Is EPSG:26912 in metres or degrees?

EPSG:26912 is projected, so coordinates are easting and northing in metres, not degrees.

How do I convert EPSG:26912 to latitude and longitude?

Transform from EPSG:26912 to EPSG:4326 (WGS 84). In GeoCAD Bridge open the coordinate converter with EPSG:26912 preselected, enter easting and northing, and choose WGS 84 as the target.

What is the central meridian of EPSG:26912?

-111° (UTM zone 12), with a scale factor of 0.9996, false easting 500 000 m and false northing 0 m.

How accurate is the transformation from EPSG:26912 to WGS 84?

The most accurate EPSG transformation listed here is “axis order change (2D) + NAD83 to WGS 84 (1) + axis order change (2D)”, with a stated accuracy of 4 m for North America - onshore and offshore: Canada - Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Northwest Territories; Nova Scotia; Nunavut; Ontario; Prince Edward Island; Quebec; Saskatchewan; Yukon. United States (USA) - Alabama; Alaska (mainland); Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming.. Always check the area of use before applying it.

Coordinate systems

Articles

Tools

References

IOGP. EPSG Geodetic Parameter Dataset, epsg.org/crs_26912.
PROJ 9.5.1 / pyproj 3.7.2, used to compute every value on this page.

Cite this page

GeoCAD Bridge. “EPSG:26912 — NAD83 / UTM zone 12N.” GeoCAD Bridge EPSG Library, updated 2026-10-05. https://www.geocadbridge.com/epsg/26912/