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    EPSG reference

    EPSG:4286 — Qatar 1948

    Qatar 1948 (EPSG:4286) — a Geographic (degrees) system on the helmert datum, used in Qatar. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter to WGS84 and U…

    At a glance

    EPSG
    4286
    Name
    Qatar 1948
    Kind
    Geographic (degrees)
    Family
    Geographic (longitude/latitude)
    Ellipsoid
    helmert
    Accuracy
    ±0.1 m (vs PROJ)
    Countries
    Qatar
    Convert from this system now

    Area of use

    West50.69°
    South24.55°
    East51.68°
    North26.20°

    Projection parameters

    Projectionlonglat
    Ellipsoidhelmert
    proj4
    +proj=longlat +ellps=helmert +no_defs
    WKT (ESRI)
    GEOGCS["GCS_Qatar 1948",DATUM["D_Helmert_1906",SPHEROID["Helmert_1906",6378200,298.3]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4286"]]

    Sample conversion

    Qatar capital: WGS84 51.53100, 25.28540 → EPSG:4286 51.5310000, 25.2854000

    Values are within ±0.1 m at the test point.

    About the Geographic (longitude/latitude) family

    Qatar 1948 is a geographic coordinate system: positions are longitude and latitude in degrees on its reference ellipsoid, not metres on a plane. It is the datum layer that projected grids (UTM, national belts) are built upon.

    Because it is unprojected, distances and areas cannot be measured directly from its degrees — convert to a metric projected system (or use a geodesic calculation) first. This page's converter does exactly that.

    Related systems

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

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    FAQ

    What is EPSG:4286?
    It is the coordinate system “Qatar 1948”, a Geographic (degrees) system in the Geographic (longitude/latitude) family, identified worldwide by the code EPSG:4286.
    What datum does it use, and how accurate is it?
    It is based on the helmert 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 Qatar. This page shows its area of use as a coordinate rectangle above.
    How do I convert EPSG:4286 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