Skip to main content
    GeoGiza
    Sign in
    EPSG reference

    EPSG:2999 — Grand Comoros / UTM zone 38S

    Grand Comoros / UTM zone 38S (EPSG:2999) — a Projected (metres) system on the intl datum, used in Comoros. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter…

    At a glance

    EPSG
    2999
    Name
    Grand Comoros / UTM zone 38S
    Kind
    Projected (metres)
    Family
    Universal Transverse Mercator (UTM)
    Ellipsoid
    intl
    Accuracy
    ±0.1 m (vs PROJ)
    Countries
    Comoros
    Convert from this system now

    Area of use

    West43.16°
    South-11.99°
    East43.55°
    North-11.31°

    Projection parameters

    Projectionutm
    UTM zone38
    Southern hemisphere✓
    Ellipsoidintl
    Unitsm
    Helmert shift to WGS84-963,510,-359,0,0,0,0
    proj4
    +proj=utm +zone=38 +south +ellps=intl +units=m +no_defs +towgs84=-963,510,-359,0,0,0,0
    WKT (ESRI)
    PROJCS["Grand Comoros / UTM zone 38S",GEOGCS["GCS_Grand Comoros / UTM zone 38S",DATUM["D_International_1924",SPHEROID["International_1924",6378388,297],TOWGS84[-963,510,-359,0,0,0,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000],PARAMETER["False_Northing",10000000],PARAMETER["Central_Meridian",45],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0],UNIT["Meter",1],AUTHORITY["EPSG","2999"]]

    Sample conversion

    Centre of the area of use: WGS84 43.35500, -11.65000 → EPSG:2999 319634.991, 8711993.778

    Values are within ±0.1 m at the test point.

    About the Universal Transverse Mercator (UTM) family

    Grand Comoros / UTM zone 38S 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 Comoros.

    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

    Request technical support

    Need help with your survey project?

    Leave your email and our technical office will reach out for certified conversion and geodetic-adjustment support. The tool stays free, no sign-up.

    FAQ

    What is EPSG:2999?
    It is the coordinate system “Grand Comoros / UTM zone 38S”, a Projected (metres) system in the Universal Transverse Mercator (UTM) family, identified worldwide by the code EPSG:2999.
    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 ±0.1 m versus PROJ; for centimetre work use a geodetic adjustment service.
    Where is this system used?
    It is used in Comoros. This page shows its area of use as a coordinate rectangle above.
    How do I convert EPSG:2999 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