Some free MP3 to WAV converters are Free WAV MP3 Converter, MP3 to WAV Decoder and Medio.io. Free WAV MP3 Converter is compatible with Windows XP, Vista and 7. It converts audio files from MP3 format to WAV format without generating temporary files. It supports batch conversion and tag copying.
With the MP3 to WAV Decoder, users can drag and drop MP3 files from Windows Explorer into the program's user interface to convert the files to uncompressed WAV format. MP3 to WAV Decoder supports batch conversion and volume normalization.
Medio.io is an online audio converter that allows users to upload a file to the website and convert it to WAV format. In addition, users can select the quality of the output file.