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    EPSG reference

    EPSG:4163 — Yemen NGN96

    Yemen NGN96 (EPSG:4163) — a Geographic (degrees) system on the WGS84 datum, used in Yemen. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter to WGS84 and UT…

    At a glance

    EPSG
    4163
    Name
    Yemen NGN96
    Kind
    Geographic (degrees)
    Family
    Geographic (longitude/latitude)
    Ellipsoid
    WGS84
    Accuracy
    ±0.1 m (vs PROJ)
    Countries
    Yemen
    Convert from this system now

    Area of use

    West41.08°
    South8.95°
    East57.96°
    North19.00°

    Projection parameters

    Projectionlonglat
    EllipsoidWGS84
    proj4
    +proj=longlat +ellps=WGS84 +no_defs
    WKT (ESRI)
    GEOGCS["GCS_Yemen NGN96",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4163"]]

    Sample conversion

    Yemen capital: WGS84 44.19100, 15.36940 → EPSG:4163 44.1910000, 15.3694000

    Values are within ±0.1 m at the test point.

    About the Geographic (longitude/latitude) family

    Yemen NGN96 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:4163?
    It is the coordinate system “Yemen NGN96”, a Geographic (degrees) system in the Geographic (longitude/latitude) family, identified worldwide by the code EPSG:4163.
    What datum does it use, and how accurate is it?
    It is based on the WGS84 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 Yemen. This page shows its area of use as a coordinate rectangle above.
    How do I convert EPSG:4163 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