Free DAT to MPG SE, as its name, is free and can be used to convert DAT to MPG. It is a good program for you if you want to convert DAT to MPG accidently. It can convert at superfast speed and the converting result is relatively good. The interface is really simple, so it's easy-to-use. You can master it even without any help. It is a professional DAT to MPG converter. Just try it.