EPSG:21781 — CH1903 / LV03
Projected coordinate system · coordinates in metres · Liechtenstein; Switzerland.
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To (this page’s CRS)
EPSG:21781CH1903 / LV03
Coordinates in EPSG:4326 — one pair per line
Paste as many as you like: X,Y or X Y or X;Y (optional Z). Columns copied from Excel or a CSV work as-is.
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Worked example — the centre of this system's area of use: 8.225, 46.815 (EPSG:4326 lon, lat) = 660,013.54, 185,171.98 (EPSG:21781).
EPSG:21781 details
TypeProjected CRS
DatumCH1903
Unitsmetre
AxesEasting (east) · Northing (north)
Projection methodHotine Oblique Mercator (variant B)
ScopeCadastre, engineering survey, topographic mapping (large and medium scale).
Base CRSEPSG:4149
Area of use
Liechtenstein; Switzerland.
WGS84 bounds: 5.96° to 10.49° longitude, 45.82° to 47.81° latitude.
Well-known text (WKT2)
Show WKT2 definition for EPSG:21781
PROJCRS["CH1903 / LV03",BASEGEOGCRS["CH1903",DATUM["CH1903",ELLIPSOID["Bessel 1841",6377397.155,299.1528128,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4149]],CONVERSION["Swiss Oblique Mercator 1903M",METHOD["Hotine Oblique Mercator (variant B)",ID["EPSG",9815]],PARAMETER["Latitude of projection centre",46.9524055555556,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8811]],PARAMETER["Longitude of projection centre",7.43958333333333,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8812]],PARAMETER["Azimuth at projection centre",90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8813]],PARAMETER["Angle from Rectified to Skew Grid",90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8814]],PARAMETER["Scale factor at projection centre",1,SCALEUNIT["unity",1],ID["EPSG",8815]],PARAMETER["Easting at projection centre",600000,LENGTHUNIT["metre",1],ID["EPSG",8816]],PARAMETER["Northing at projection centre",200000,LENGTHUNIT["metre",1],ID["EPSG",8817]]],CS[Cartesian,2],AXIS["easting (Y)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing (X)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Cadastre, engineering survey, topographic mapping (large and medium scale)."],AREA["Liechtenstein; Switzerland."],BBOX[45.82,5.96,47.81,10.49]],ID["EPSG",21781]]
Related coordinate systems
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Registry facts from the official EPSG dataset (v11.022) as distributed with PROJ. Conversions run in your browser via GDAL/PROJ WebAssembly.