FME® gives you flexibility to run coordinate transformation processes to your datasets.
Supported Coordinate Systems
FME supports over 5300 coordinate systems with a variety of projections, ellipsoids and datums. You can also define your own custom coordinate systems in FME
With a KKJ-ETRS plugin you can transform your data between KKJ, ETRS-TM35FIN and ETRS-GK. The plugin supports triangular affine transformation, which provides accurate results.