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    EPSG reference

    EPSG:4230 — ED50

    ED50 (EPSG:4230) — a Geographic (degrees) system on the intl datum, used in Jordan, Syria, Lebanon and more. Parameters, proj4, WKT, accuracy ±1.9 m, plus a free convert…

    At a glance

    EPSG
    4230
    Name
    ED50
    Kind
    Geographic (degrees)
    Family
    Geographic (longitude/latitude)
    Ellipsoid
    intl
    Accuracy
    ±1.9 m (vs PROJ)
    Countries
    Jordan، Syria، Lebanon، Palestine
    Convert from this system now

    Area of use

    West-16.10°
    South25.71°
    East48.61°
    North84.73°

    Projection parameters

    Projectionlonglat
    Ellipsoidintl
    Helmert shift to WGS84-87,-98,-121,0,0,0,0
    proj4
    +proj=longlat +ellps=intl +no_defs +towgs84=-87,-98,-121,0,0,0,0
    WKT (ESRI)
    GEOGCS["GCS_ED50",DATUM["D_International_1924",SPHEROID["International_1924",6378388,297],TOWGS84[-87,-98,-121,0,0,0,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4230"]]

    Sample conversion

    Jordan capital: WGS84 35.92840, 31.95390 → EPSG:4230 35.9286994, 31.9549541

    Values are within ±1.9 m at the test point.

    About the Geographic (longitude/latitude) family

    ED50 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:4230?
    It is the coordinate system “ED50”, a Geographic (degrees) system in the Geographic (longitude/latitude) family, identified worldwide by the code EPSG:4230.
    What datum does it use, and how accurate is it?
    It is based on the intl ellipsoid and it carries Helmert parameters to WGS84. The residual at the test point is about ±1.9 m versus PROJ; for centimetre work use a geodetic adjustment service.
    Where is this system used?
    It is used in Jordan, Syria, Lebanon and more. This page shows its area of use as a coordinate rectangle above.
    How do I convert EPSG:4230 to WGS84?
    Use the free coordinate converter above (preloaded with this system) to convert to WGS84, UTM, or any other system, within a ±1.9 m residual.

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