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EPSG Library · Kuwait, Bahrain, Oman

EPSG:31901 — KUDAMS / KTM

Source: EPSG Dataset via PROJ 9.5.1 · Updated

Summary

EPSG:31901 (KUDAMS / KTM) is a projected coordinate reference system on the Kuwait Utility datum using the Transverse Mercator method, with coordinates in metres. Area of use: Kuwait - Kuwait City.

  • Type: projected
  • Datum: Kuwait Utility
  • Units: metre
  • Axes: E, N

Definition

EPSG:31901 as published in the EPSG Dataset (PROJ 9.5.1).
PropertyValue
EPSG codeEPSG:31901
NameKUDAMS / KTM
TypeProjected CRS
DatumKuwait Utility
EllipsoidGRS 1980 (a = 6,378,137.000 m, 1/f = 298.257222)
Prime meridianGreenwich
Projection methodTransverse Mercator
AxesEasting (E, east, metre); Northing (N, north, metre)
ScopeEngineering survey, topographic mapping (large scale).
Bounding box47.78° to 48.16° longitude, 29.17° to 29.45° latitude

Area of use

Kuwait - Kuwait City.

Projection parameters

Transverse Mercator parameters.
ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin48degree
Scale factor at natural origin1unity
False easting500,000metre
False northing0metre

Example coordinates

A WGS 84 point at longitude 47.97°, latitude 29.31° (inside the area of use) has these coordinates in EPSG:31901:

Computed with PROJ using the EPSG default operation: unavailable until proj_trans is called.
AxisValueUnit
E497,062.604m
N3,243,624.768m

At this point the projection scale factor is 1.00000010 and the grid convergence is -0.014686°.

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) + Kudams to WGS 84 (2) + axis order change (2D)1 mKuwait - Kuwait City.
axis order change (2D) + Kudams to WGS 84 (1) + axis order change (2D)1 mKuwait - Kuwait City.

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=tmerc +lat_0=0 +lon_0=48 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +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=tmerc +lat_0=0 +lon_0=48 +k=1 +x_0=500000 +y_0=0 +ellps=GRS80 +units=m +towgs84=226.702,-193.337,-35.371,-2.229,-4.391,9.238,0.9798 +no_defs

Datum shift from Kudams to WGS 84 (2) (EPSG accuracy 1 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["KUDAMS / KTM", BASEGEOGCRS["KUDAMS", DATUM["Kuwait Utility", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4319]], CONVERSION["Kuwait Transverse Mercator", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",48, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",1, 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 (large scale)."], AREA["Kuwait - Kuwait City."], BBOX[29.17,47.78,29.45,48.16]], ID["EPSG",31901]]

Downloads

FAQ

What is EPSG:31901?

EPSG:31901 (KUDAMS / KTM) is a projected coordinate reference system on the Kuwait Utility datum using the Transverse Mercator method, with coordinates in metres. Area of use: Kuwait - Kuwait City.

Where can EPSG:31901 be used?

Its area of use is: Kuwait - Kuwait City.

Is EPSG:31901 in metres or degrees?

EPSG:31901 is projected, so coordinates are easting and northing in metres, not degrees.

How do I convert EPSG:31901 to latitude and longitude?

Transform from EPSG:31901 to EPSG:4326 (WGS 84). In GeoCAD Bridge open the coordinate converter with EPSG:31901 preselected, enter easting and northing, and choose WGS 84 as the target.

How accurate is the transformation from EPSG:31901 to WGS 84?

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

Coordinate systems

Articles

Tools

References

  1. IOGP. EPSG Geodetic Parameter Dataset, epsg.org/crs_31901.
  2. PROJ 9.5.1 / pyproj 3.7.2, used to compute every value on this page.

Cite this page

GeoCAD Bridge. “EPSG:31901 — KUDAMS / KTM.” GeoCAD Bridge EPSG Library, updated 2026-10-05. https://www.geocadbridge.com/epsg/31901/