Convert M3U to MP3

Converting M3U Media Playlists directly to MP3 Audio Files (.m3u to .mp3 conversion) is not possible, since M3U playlists do not contain any media data.

If you want to convert media files referenced by your M3U playlist to other formats, you must first locate/download those files. You can then easily convert those files using most available media editing programs or (online) conversion tools.

Simply put, it is impossible to convert M3U to MP3 directly.
Thus, there is no so-called m3u to mp3 converter or a free online .m3u to .mp3 converter to be found.