audio in, M4A out: free, no signup, and both files delete themselves within an hour.
One file at a time for now
Batch processing isn't available yet: drop files one by one, or use the Merger to join them.
Try another fileConverting audio to M4A is free: drop your audio above, hit convert, and download the M4A. Files delete themselves within an hour.
Whatever kind of audio you're holding: a voice memo, a session export, something a client sent: flipping it to M4A gets you a file built for sounding great anywhere in the Apple ecosystem. Flippy reads practically any audio format and writes clean M4A, so you don't even need to know what the original is.
A classic audio to M4A job: voice memos, downloads and session exports, bound for Apple devices, which treat it as a native tongue.
Whatever the recording, audio just wants to be heard: the trick is picking a shape that plays where you need it. It comes from wherever your camera, screen recorder or download made it.
M4A is AAC in Apple's favorite outfit: the audio-only MP4 your iPhone speaks natively. An MP4 container holding only audio: usually AAC, occasionally Apple's lossless ALAC. That makes it the right destination when what you need is sounding great anywhere in the Apple ecosystem.
Drop your audio file into the flipper above, or click to browse for it.
Check the output format: M4A is already selected for you.
Hit Convert, give it a moment, then download your new M4A.
Settings guidance for any audio file to M4A: 256 kbps AAC is what Apple itself sells music at; 128 kbps still edges out MP3 at the same size. Flippy handles the codec choices, so the only real decision was picking M4A.
| audio | M4A | |
|---|---|---|
| Born | wherever your microphone, DAW or download came from | 2003, popularized by Apple's iTunes Store |
| Type | audio · any format | audio · lossy |
| Best for | any sound file: music, voice memos, podcasts, session exports | sounding great anywhere in the Apple ecosystem |
| Weak spot | nothing in particular; the limits belong to whichever format it happens to be wearing | older Windows software and stubborn car stereos that expect a .mp3 |
| Typical size | anywhere from tiny voice notes to studio-sized masters | like AAC: better-than-MP3 sound at about 1 MB per minute |
| Plays on | Depends entirely on the format it lands in. | iPhone, Mac and iTunes natively; most modern Android and Windows apps too. |
Flippy always picks the gentlest path: container swaps and extractions copy your streams untouched, and re-encodes happen once, at quality matched to the source.
It depends on the format you pick as the output: lossy formats land a few megabytes per minute, lossless several times that.
iPhone, Mac and iTunes natively; most modern Android and Windows apps too. That's the usual reason people leave audio behind: M4A simply opens in more of the places that matter.
Seconds for most files: audio is light work. A long recording might take a minute; your file auto-deletes from our servers within an hour either way.