Coordinate Reference Systems
Transform Coordinates
Remarks
Parameter values from S-JTSK to ETRS89 (1) (code 1622). Assumes ETRS89 and WGS 84 can be considered the same to within the accuracy of the transformation. Replaced by S-JTSK to WGS 84 (5) (code 5239).
Frequently Asked Questions
How do I convert S-JTSK to WGS 84 coordinates?
Use the coordinate transformation tool above to convert S-JTSK (EPSG:4156) to WGS 84 (EPSG:4326). Enter your source coordinates and click Transform. This uses the Position Vector transformation (geog2D domain) method with 1m accuracy.
How do I transform S-JTSK to WGS 84 using Proj4js?
Use proj4.defs to define both EPSG:4156 and EPSG:4326, then call proj4(source, target, [x, y]) to convert coordinates programmatically.
What is the accuracy of the S-JTSK to WGS 84 transformation?
This transformation (EPSG:1623) has an accuracy of 1m using the Position Vector transformation (geog2D domain) method. Area of use: Czechia.