ZAMZAR
Free conversion between document, image, music, video, audio, eBook, compressed and CAD formats. No download or account required.
eFree Converter - The universal online file converter
Audio - flac, mp3, ogg, wma, aiff, wav, snd, wv
Documents - pdf, docx, doc, odt, wps
Pictures - png, jpg, jpeg, gif, bmp, ico, tiff
Video - 3gp, mpeg, avi, flv, mkv, vob, mp4, mov, wmv
and many more, totally free!