Convert coordinates from KKJ (EPSG:4123) to EUREF-FIN (EPSG:10690) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 2 transformations between KKJ (EPSG:4123) and EUREF-FIN (EPSG:10690). Each applies to a specific area — pick the one whose area of use covers your data.
Recommended transformation between KKJ and EUREF-FIN. Use this in preference to transformation KKJ to EUREF-FIN (2) (code 10098).
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -96.062 | metre |
| Y-axis translation(ty) | -82.428 | metre |
| Z-axis translation(tz) | -121.753 | metre |
| X-axis rotation(rx) | -4.801 | arc-second |
| Y-axis rotation(ry) | -0.345 | arc-second |
| Z-axis rotation(rz) | 1.376 | arc-second |
| Scale difference(ds) | 1.496 | parts per million |
In most areas accuracy is approximately 0.5m although in some areas it is in the order of 2m. Replaces KKJ to ETRS89 (1) (code 1638). YKJ to ETRS-TM35FIN (code 10703) using the TINshift method is recommended in preference to this transformation.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4123", "EPSG:10690", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geographic system using latitude and longitude on an ellipsoid · Area of use: Finland - onshore
+proj=longlat +ellps=intl +towgs84=-96.062,-82.428,-121.753,4.801,0.345,-1.376,1.496 +no_defs +type=crsMore about EPSG:4123 →
geographic system using latitude and longitude on an ellipsoid · Area of use: Finland
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crsMore about EPSG:10690 →