Convert S-JTSK/05 to ETRS89

Convert coordinates from S-JTSK/05 (EPSG:5228) to ETRS89 (EPSG:4258) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (lon, lat (decimal degrees))

Output (lon, lat (decimal degrees))

Direct link to this transformation: epsgtransform.com/transform/epsg-5228-to-epsg-4258

Official EPSG transformation from S-JTSK/05 to ETRS89

The EPSG Geodetic Parameter Dataset defines 1 transformation between S-JTSK/05 (EPSG:5228) and ETRS89 (EPSG:4258). Its parameters, accuracy and area of use are listed below.

S-JTSK/05 to ETRS89 (1)

EPSG:5226±0 m

Method:: Coordinate Frame rotation (geog2D domain)
Area of use:: Czechia
Scope:: Geodesy. Defined as exact for S-JTSK/05 (Ferro) / Modified Krovak projCRSs (CRS codes 5224-25).

Parameter	Value	Unit
X-axis translation(tx)	572.213	metre
Y-axis translation(ty)	85.334	metre
Z-axis translation(tz)	461.94	metre
X-axis rotation(rx)	-4.9732	arc-second
Y-axis rotation(ry)	-1.529	arc-second
Z-axis rotation(rz)	-5.2484	arc-second
Scale difference(ds)	3.5378	parts per million

Derived from the relationship between the R05 realisation of ETRS89 and the astrogeodetic S-JTSK network. Improves CT code 1622. S-JTSK/05 is a scientific working system, S-JTSK the legal system. May be taken as approx. CT S-JTSK to WGS 84 (code 5227).

Convert EPSG:5228 to EPSG:4258 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:5228", "EPSG:4258", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:5228 — S-JTSK/05

geographic system using latitude and longitude on an ellipsoid · Area of use: Czechia

+proj=longlat +ellps=bessel +towgs84=572.213,85.334,461.94,4.9732,1.529,5.2484,3.5378 +no_defs +type=crs

More about EPSG:5228 →

Target: EPSG:4258 — ETRS89

geographic system using latitude and longitude on an ellipsoid · Area of use: Europe - ETRF by country

+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crs

More about EPSG:4258 →

Frequently asked questions

How accurate is converting S-JTSK/05 to ETRS89?: The most accurate official EPSG transformation between these systems is accurate to about ±0 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation in a desktop GIS.
Does my data leave the browser when I use this converter?: No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.

Need the reverse? Convert EPSG:4258 to EPSG:5228 →