EPSG systems

EPSG:32181 NAD83 / MTM zone 1

Projected system (Transverse Mercator) in use: Canada - Newfoundland - east of 54.5°W. The full definition below, and conversion in one click.

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System record
Code	EPSG:32181
Name	NAD83 / MTM zone 1
Type	Projected system — Transverse Mercator
Area of use	Canada - Newfoundland - east of 54.5°W Canada - Newfoundland - onshore east of 54°30'W.
Bounds	W -54,50° · S 46,56° · E -52,54° · N 49,89°
Countries	Canada
Datum	North American Datum 1983
Ellipsoid	GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system	EPSG:4269 — NAD83
Unit	metre (E(X) east, N(Y) north)
Transformation to WGS 84	NAD83 to WGS 84 (1) (EPSG:1188) — accuracy 4 m
Scope	Engineering survey, topographic mapping.

Projection parameters

Parameter	Value	Unit
Latitude of natural origin	0	degree
Longitude of natural origin	-53	degree
Scale factor at natural origin	0.9999	unity
False easting	304800	metre
False northing	0	metre

proj4 definition

+proj=tmerc +lat_0=0 +lon_0=-53 +k=0.9999 +x_0=304800 +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:32181.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_MTM_1",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",304800.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-53.0],PARAMETER["Scale_Factor",0.9999],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Canada

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 — Canada