Free: convert up to 5 files at a time to MP3, M4A, WAV, FLAC or OGG, take audio out of videos, and rip CDs with track names. No ads, no account. Pro (Lifetime Unlock $9.99 one-time, or a 7-Day Pass $2.99) removes the limit and adds Opus, ALAC, AIFF and WMA, custom quality, trim, normalize and the tag editor.
Nine output formats
MP3, M4A (AAC), WAV, FLAC and OGG free; M4A (Apple Lossless), Opus, AIFF and WMA, plus bitrate and VBR settings, with Pro.
Audio from video
Pull the soundtrack out of MP4, MOV, MKV, WebM, AVI and 3GP videos and save it as MP3 or any other format.
Batch conversion
Drop in files or folders and convert them at once, using several processor cores. Free: 5 files at a time; Pro: unlimited, subfolders included.
Rip audio CDs
Rip a CD to MP3, FLAC or any other format. Track names come from MusicBrainz, free; cover art from the Cover Art Archive with Pro.
Trim, normalize and tags (Pro)
Cut the start or end, even out loudness, and edit the title, artist, album and cover art without re-encoding.
Right-click in File Explorer
Select files, right-click, Audio Converter, Convert to MP3, M4A, WAV, FLAC, OGG or Opus. Done in the background.
Good to know
Audio Converter works on your PC: your audio is never uploaded. It reads MP3, M4A, AAC, WAV, FLAC, OGG, Opus, WMA, AIFF, ALAC, AMR and CAF files. It does not remove copy protection (DRM): protected files such as purchased WMA, M4P or Audible books are refused. Ripping a CD needs a CD or DVD drive.