With the M.O.S.S. Coordinate System Calculator coordinate tuples or triples can be tranformed into several reference systems (e.g. Gauß-Krüger-DHDN, Gauß-Krüger-Pulkow, UTM International, UTM-ETRS89) using a comfortable GUI.
There is also an import and export of coordinate lists (text files). Calculation parameters can be customised.
Fiel size about 600 KB | platform Windows