EPSG:2312 Garoua / UTM zone 33N
Projected system (Transverse Mercator) in use: Cameroon - Garoua area. 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:2312 |
|---|---|
| Name | Garoua / UTM zone 33N |
| Type | Projected system — Transverse Mercator |
| Area of use | Cameroon - Garoua area |
| Bounds | W 12,90° · S 8,92° · E 14,19° · N 9,87° |
| Countries | Cameroon |
| Datum | Garoua |
| Ellipsoid | Clarke 1880 (RGS) a = 6378249.145 m · 1/f = 293.465 |
| Base geographic system | EPSG:4197 — Garoua |
| 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 | 15 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=utm +zone=33 +a=6378249.145 +rf=293.465 +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:2312.
WKT (ESRI format, the .prj content)
PROJCS["Garoua_UTM_Zone_33N",GEOGCS["GCS_Garoua",DATUM["D_Garoua",SPHEROID["Clarke_1880_RGS",6378249.145,293.465]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",15.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Cameroon
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.