This co-ordinate converter will allow users to transform co-ordinate points and co-ordinate point text files between the Irish Grid, ITM (Irish Transverse Mercator), and UTM (Universal Transverse Mercator) co-ordinate reference systems.
More detailed information on installing and using the co-ordinate converter can be found in the document included in the download.
Grid Inquest 2 – Current Versions
Grid Inquest 2 – Old Versions
There is also a developers pack available to download here.