Convert M4A
AAC in an MPEG-4 audio file. Every pair below runs in the browser. The file is not uploaded. Video and audio use FFmpeg in WebAssembly, fetched from this origin once, about 30 MB, then cached by the service worker. The clip itself is not part of that download.
This hub is the index, not the workbench. Each conversion is its own URL so a search for “M4A to something” can land on a page that only does that job. The file picker on those pages expects M4A when you are leaving this format, or produces M4A when you are arriving. A generic dropdown still exists under Video convert and Audio convert if you would rather pick the destination after you drop the file.
You can check the same way on every pair: open the network panel, drop a M4A file, convert it. You should see this origin. You shouldn't see a POST of the file. Google Analytics, if it's on, is page views, not your M4A bytes. If a tool needs a server, it isn't on this site.
This site can read it. This site can write it. Engine: ffmpeg.
Convert from M4A
- M4A to MP3The audio format that still plays everywhere.
- M4A to WAVUncompressed PCM. Large, simple, editable.
- M4A to OGGVorbis in an Ogg container.
- M4A to FLACLossless compressed audio.
- M4A to OPUSOpus audio in an Ogg container. Good for speech and music at low bitrates.
- M4A to AACRaw or ADTS AAC audio.
- M4A to AIFFAudio IFF, common in Apple and pro-audio workflows.
- M4A to MKAMatroska audio container (often Opus).
- M4A to AUSun/NeXT AU audio.
- M4A to CAFApple Core Audio Format.
- M4A to TTATrue Audio lossless.
- M4A to WVWavPack lossless.
Convert to M4A
- MP3 to M4AThe audio format that still plays everywhere.
- WAV to M4AUncompressed PCM. Large, simple, editable.
- OGG to M4AVorbis in an Ogg container.
- FLAC to M4ALossless compressed audio.
- OPUS to M4AOpus audio in an Ogg container. Good for speech and music at low bitrates.
- AAC to M4ARaw or ADTS AAC audio.
- AIFF to M4AAudio IFF, common in Apple and pro-audio workflows.
- MKA to M4AMatroska audio container (often Opus).
- AU to M4ASun/NeXT AU audio.
- CAF to M4AApple Core Audio Format.
- TTA to M4ATrue Audio lossless.
- WV to M4AWavPack lossless.
Related: Convert · All formats · How it works