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    EPSG reference

    EPSG:7375 — ONGD14 / UTM zone 40N

    ONGD14 / UTM zone 40N (EPSG:7375) — a Projected (metres) system on the GRS80 datum, used in Oman. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter to WGS84…

    At a glance

    EPSG
    7375
    Name
    ONGD14 / UTM zone 40N
    Kind
    Projected (metres)
    Family
    Universal Transverse Mercator (UTM)
    Ellipsoid
    GRS80
    Accuracy
    ±0.1 m (vs PROJ)
    Countries
    Oman
    Convert from this system now

    Area of use

    West54.00°
    South14.33°
    East60.01°
    North26.74°

    Projection parameters

    Projectionutm
    UTM zone40
    EllipsoidGRS80
    Unitsm
    proj4
    +proj=utm +zone=40 +ellps=GRS80 +units=m +no_defs
    WKT (ESRI)
    PROJCS["ONGD14 / UTM zone 40N",GEOGCS["GCS_ONGD14 / UTM zone 40N",DATUM["D_GRS_1980",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",57],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0],UNIT["Meter",1],AUTHORITY["EPSG","7375"]]

    Sample conversion

    Oman capital: WGS84 58.59220, 23.61390 → EPSG:7375 662438.156, 2612385.217

    Values are within ±0.1 m at the test point.

    About the Universal Transverse Mercator (UTM) family

    ONGD14 / UTM zone 40N 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 Oman.

    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

    Useful links: Converter · Batch converter · File converter · Country page

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    FAQ

    What is EPSG:7375?
    It is the coordinate system “ONGD14 / UTM zone 40N”, a Projected (metres) system in the Universal Transverse Mercator (UTM) family, identified worldwide by the code EPSG:7375.
    What datum does it use, and how accurate is it?
    It is based on the GRS80 ellipsoid with no default transform to WGS84 (ballpark). 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 Oman. This page shows its area of use as a coordinate rectangle above.
    How do I convert EPSG:7375 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