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EPSG Library · North Africa

EPSG:26192 — Merchich / Sud Maroc

Source: EPSG Dataset via PROJ 9.5.1 · Updated

Summary

EPSG:26192 (Merchich / Sud Maroc) is a projected coordinate reference system on the Merchich datum using the Lambert Conic Conformal (1SP) method, with coordinates in metres. Area of use: Morocco onshore south of 35 grads North (31°30'N).

  • Type: projected
  • Datum: Merchich
  • Units: metre
  • Axes: X, Y

Definition

EPSG:26192 as published in the EPSG Dataset (PROJ 9.5.1).
PropertyValue
EPSG codeEPSG:26192
NameMerchich / Sud Maroc
TypeProjected CRS
DatumMerchich
EllipsoidClarke 1880 (IGN) (a = 6,378,249.200 m, 1/f = 293.466021)
Prime meridianGreenwich
Projection methodLambert Conic Conformal (1SP)
AxesEasting (X, east, metre); Northing (Y, north, metre)
ScopeEngineering survey, topographic mapping.
Bounding box-13.24° to -3.59° longitude, 27.66° to 31.51° latitude

Area of use

Morocco onshore south of 35 grads North (31°30'N).

Projection parameters

Lambert Conic Conformal (1SP) parameters.
ParameterValueUnit
Latitude of natural origin33grad
Longitude of natural origin-6grad
Scale factor at natural origin0.999615596unity
False easting500,000metre
False northing300,000metre

Example coordinates

A WGS 84 point at longitude -8.415°, latitude 29.585° (inside the area of use) has these coordinates in EPSG:26192:

Computed with PROJ using the EPSG default operation: axis order change (2D) + Inverse of Merchich to WGS 84 (1) + Sud Maroc.
AxisValueUnit
X207,884.869m
Y291,331.591m

At this point the projection scale factor is 0.99961760 and the grid convergence is -1.493808°.

Open this conversion in the coordinate converter

Transformations to WGS 84

Candidate operations from the EPSG Dataset, best first as ranked by PROJ.
OperationAccuracyArea of use
axis order change (2D) + Merchich to WGS 84 (1) + axis order change (2D)7 mMorocco - 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.

Definitions and downloads

PROJ string

+proj=lcc +lat_1=29.7 +lat_0=29.7 +lon_0=-5.4 +k_0=0.999615596 +x_0=500000 +y_0=300000 +ellps=clrk80ign +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=lcc +lat_1=29.7 +lat_0=29.7 +lon_0=-5.4 +k_0=0.999615596 +x_0=500000 +y_0=300000 +ellps=clrk80ign +units=m +towgs84=31,146,47 +no_defs

Datum shift from Merchich to WGS 84 (1) (EPSG accuracy 7 m), the best single Helmert operation for this area of use. Where PROJ prefers a grid-based or multi-step operation (see the table above), results can differ by up to that operation's accuracy.

WKT2:2019
PROJCRS["Merchich / Sud Maroc", BASEGEOGCRS["Merchich", DATUM["Merchich", ELLIPSOID["Clarke 1880 (IGN)",6378249.2,293.466021293627, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4261]], CONVERSION["Sud Maroc", METHOD["Lambert Conic Conformal (1SP)", ID["EPSG",9801]], PARAMETER["Latitude of natural origin",33, ANGLEUNIT["grad",0.0157079632679489], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-6, ANGLEUNIT["grad",0.0157079632679489], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.999615596, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",300000, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["easting (X)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["northing (Y)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["Morocco onshore south of 35 grads North (31°30'N)."], BBOX[27.66,-13.24,31.51,-3.59]], ID["EPSG",26192]]

Downloads

FAQ

What is EPSG:26192?

EPSG:26192 (Merchich / Sud Maroc) is a projected coordinate reference system on the Merchich datum using the Lambert Conic Conformal (1SP) method, with coordinates in metres. Area of use: Morocco onshore south of 35 grads North (31°30'N).

Where can EPSG:26192 be used?

Its area of use is: Morocco onshore south of 35 grads North (31°30'N).

Is EPSG:26192 in metres or degrees?

EPSG:26192 is projected, so coordinates are easting and northing in metres, not degrees.

How do I convert EPSG:26192 to latitude and longitude?

Transform from EPSG:26192 to EPSG:4326 (WGS 84). In GeoCAD Bridge open the coordinate converter with EPSG:26192 preselected, enter easting and northing, and choose WGS 84 as the target.

How accurate is the transformation from EPSG:26192 to WGS 84?

The most accurate EPSG transformation listed here is “axis order change (2D) + Merchich to WGS 84 (1) + axis order change (2D)”, with a stated accuracy of 7 m for Morocco - onshore.. Always check the area of use before applying it.

Coordinate systems

Articles

Tools

References

  1. IOGP. EPSG Geodetic Parameter Dataset, epsg.org/crs_26192.
  2. PROJ 9.5.1 / pyproj 3.7.2, used to compute every value on this page.

Cite this page

GeoCAD Bridge. “EPSG:26192 — Merchich / Sud Maroc.” GeoCAD Bridge EPSG Library, updated 2026-10-05. https://www.geocadbridge.com/epsg/26192/