M4A to MP3
Turn M4A files, like iPhone voice memos, into universally compatible MP3s.
Drop your audio file here
WAV (or any audio) → MP3
● Your audio is processed locally in your browser and never uploaded.
How it works
M4A is an MP4 container holding AAC audio — the format of iPhone voice memos and iTunes purchases. Your browser decodes the AAC and the audio is re-encoded to MP3 with the LAME encoder. DRM-protected files (old iTunes purchases, Apple Music) can't be converted. Works the same for OGG, OPUS, FLAC and WebM audio.