M4A to OPUS
M4A (iPhone recording) to OPUS (WhatsApp voice note)
Supported filesAACAIFFAVIFLACM4AMP4MKVMOVMP3OGGWAVWEBMWMAWMVUp to 20 files, 300 MB each
- FreeNo sign-up, no watermark
- PrivateDeleted once you download
- Full qualityCopied as-is whenever the format allows
More audio tools
WAV to MP3Plays everywhereM4A to MP3iPhone recordings to MP3OPUS to MP3WhatsApp voice notesOGG to MP3Voice notes to MP3FLAC to MP3Lossless to everydayMP3 to WAVFor editingAAC to MP3Phone sound to MP3MP3 to M4AFor iPhoneAIFF to MP3Mac studio sound to MP3Compress MP3Smaller songsCompress soundAny sound, smaller