A method is for converting image data records in medical imaging. An external service provider connected to a network receives the medical image data in the initial format via the network. He then converts them into the desired target format, and either sends them to the sender and/or to an addressee specified by the latter in the target format, or provides them for retrieval via the network. As such, the user's involvement in converting medical image data records, both in terms of economics and in terms of time, is reduced.