Transformation (conversion) of coordinates to another system

Coordinate conversions can be done with various software packages. The Hydrographic Service offers the free program PCTrans (standalone version and network version).

For transformations between ITRS, WGS84 and ETRS89, PCTrans uses the parameters from the file ‘Transformation parameters between ITRS, WGS84 and ETRS89’.

For conversions between LAT and MSL/NAP, PCTrans uses the 2006 values. The values can be made available in a data file upon request.