EPSG:4156 — S-JTSK
Geographic coordinate system · coordinates in degrees · Czechia; Slovakia.
From
To (this page’s CRS)
EPSG:4156S-JTSK
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.
0 coordinates detected
🔒 Runs entirely in your browser with GDAL WebAssembly — the same PROJ engine used by QGIS, PostGIS, and ArcGIS. Nothing is uploaded. Output units: degree.
Worked example — the centre of this system's area of use: 17.325, 49.395 (EPSG:4326 lon, lat) = 17.326, 49.396 (EPSG:4156).
EPSG:4156 details
TypeGeographic 2D CRS
DatumSystem of the Unified Trigonometrical Cadastral Network
Unitsdegree
AxesGeodetic latitude (north) · Geodetic longitude (east)
ScopeGeodesy.
Area of use
Czechia; Slovakia.
WGS84 bounds: 12.09° to 22.56° longitude, 47.73° to 51.06° latitude.
Well-known text (WKT2)
Show WKT2 definition for EPSG:4156
GEOGCRS["S-JTSK",DATUM["System of the Unified Trigonometrical Cadastral Network",ELLIPSOID["Bessel 1841",6377397.155,299.1528128,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Geodesy."],AREA["Czechia; Slovakia."],BBOX[47.73,12.09,51.06,22.56]],ID["EPSG",4156]]
Related coordinate systems
Working with whole files instead?
- Reproject a vector file (Shapefile, GeoJSON, KML, GeoPackage…) to EPSG:4156
- Reproject a GeoTIFF to EPSG:4156
- Batch-convert a CSV of coordinates between coordinate systems
Registry facts from the official EPSG dataset (v11.022) as distributed with PROJ. Conversions run in your browser via GDAL/PROJ WebAssembly.