EPSG:22721 NAD83(CSRS)v7 / UTM zone 21N
Projected system (Transverse Mercator) in use: Canada - 60°W to 54°W. The full definition below, and conversion in one click.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:22721 |
|---|---|
| Name | NAD83(CSRS)v7 / UTM zone 21N |
| Type | Projected system — Transverse Mercator |
| Area of use |
Canada - 60°W to 54°W Canada between 60°W and 54°W - Newfoundland and Labrador; Nunavut; Quebec. |
| Bounds | W -60,00° · S 38,56° · E -54,00° · N 84,00° |
| Countries | Canada |
| Datum | North American Datum of 1983 (CSRS) version 7 |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:8255 — NAD83(CSRS)v7 |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -57 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=utm +zone=21 +ellps=GRS80 +units=m +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:22721.
WKT (ESRI format, the .prj content)
PROJCS["NAD83(CSRS)v7_UTM_Zone_21N",GEOGCS["GCS_NAD83_CSRS_v7",DATUM["North_American_Datum_of_1983_(CSRS)_version_7",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",-57.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Canada
- EPSG:22707NAD83(CSRS)v7 / UTM zone 7N
- EPSG:22708NAD83(CSRS)v7 / UTM zone 8N
- EPSG:22709NAD83(CSRS)v7 / UTM zone 9N
- EPSG:22710NAD83(CSRS)v7 / UTM zone 10N
- EPSG:22711NAD83(CSRS)v7 / UTM zone 11N
- EPSG:22712NAD83(CSRS)v7 / UTM zone 12N
- EPSG:22713NAD83(CSRS)v7 / UTM zone 13N
- EPSG:22714NAD83(CSRS)v7 / UTM zone 14N
- EPSG:22715NAD83(CSRS)v7 / UTM zone 15N
- EPSG:22716NAD83(CSRS)v7 / UTM zone 16N
- EPSG:22717NAD83(CSRS)v7 / UTM zone 17N
- EPSG:22718NAD83(CSRS)v7 / UTM zone 18N
- EPSG:22719NAD83(CSRS)v7 / UTM zone 19N
- EPSG:22720NAD83(CSRS)v7 / UTM zone 20N
- EPSG:22722NAD83(CSRS)v7 / UTM zone 22N
- EPSG:22739NAD83(CSRS)v7 / PEI Stereographic
- EPSG:22762NAD83(CSRS)v7 / Alberta 3TM ref merid 111 W
- EPSG:22763NAD83(CSRS)v7 / Alberta 3TM ref merid 114 W
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.