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    EPSG reference

    EPSG:26237 — Massawa / UTM zone 37N

    Massawa / UTM zone 37N (EPSG:26237) — a Projected (metres) system on the bessel datum, used in Sudan. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter to W…

    At a glance

    EPSG
    26237
    Name
    Massawa / UTM zone 37N
    Kind
    Projected (metres)
    Family
    Universal Transverse Mercator (UTM)
    Ellipsoid
    bessel
    Accuracy
    ±0.1 m (vs PROJ)
    Countries
    Sudan
    Convert from this system now

    Area of use

    West36.44°
    South12.36°
    East43.31°
    North18.10°

    Projection parameters

    Projectionutm
    UTM zone37
    Ellipsoidbessel
    Unitsm
    Helmert shift to WGS84639,405,60,0,0,0,0
    proj4
    +proj=utm +zone=37 +ellps=bessel +units=m +no_defs +towgs84=639,405,60,0,0,0,0
    WKT (ESRI)
    PROJCS["Massawa / UTM zone 37N",GEOGCS["GCS_Massawa / UTM zone 37N",DATUM["D_Bessel_1841",SPHEROID["Bessel_1841",6377397.155,299.1528128],TOWGS84[639,405,60,0,0,0,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",39],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0],UNIT["Meter",1],AUTHORITY["EPSG","26237"]]

    Sample conversion

    Centre of the area of use: WGS84 39.87500, 15.23000 → EPSG:26237 594058.340, 1683897.075

    Values are within ±0.1 m at the test point.

    About the Universal Transverse Mercator (UTM) family

    Massawa / UTM zone 37N is a Universal Transverse Mercator zone — a 6°-wide belt of the worldwide UTM system, in metres, centred on a meridian carefully chosen so distortion stays low across the zone. It is the everyday working grid for GPS-derived surveying in Sudan.

    The classic field mistake with UTM is using the wrong zone: a point one zone away is easily hundreds of kilometres off. Always confirm the zone number (and the hemisphere) before importing coordinates, and remember that UTM eastings are offset by a 500 km false easting so they never go negative.

    Related systems

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    FAQ

    What is EPSG:26237?
    It is the coordinate system “Massawa / UTM zone 37N”, a Projected (metres) system in the Universal Transverse Mercator (UTM) family, identified worldwide by the code EPSG:26237.
    What datum does it use, and how accurate is it?
    It is based on the bessel ellipsoid and it carries Helmert parameters to WGS84. The residual at the test point is about ±0.1 m versus PROJ; for centimetre work use a geodetic adjustment service.
    Where is this system used?
    It is used in Sudan. This page shows its area of use as a coordinate rectangle above.
    How do I convert EPSG:26237 to WGS84?
    Use the free coordinate converter above (preloaded with this system) to convert to WGS84, UTM, or any other system, within a ±0.1 m residual.

    You may also need: Arab-world coordinate converter · Surveying file format converter · Batch coordinate file converter