ConvertWhat happens when you convert M4A to AIFF
- AIFF is lossless, so nothing more is lost, but quality already removed by M4A compression doesn't come back. Files are much bigger.
- AIFF files are saved as 16-bit audio, the same quality as a CD.
- Mono and stereo are kept (or choose either); surround sound is mixed down to stereo.
- Tags such as title, artist and cover art aren't copied yet.
M4A vs AIFF
| Feature | M4A | AIFF |
|---|---|---|
| Compression | Lossy | None (uncompressed) |
| Size per minute | 1.2 MB | 10 MB |
| Plays on | Most devices and apps | Apple devices, most players |
| Best for | iPhone, iTunes, Apple Music | Music production, Mac audio |
How to convert M4A to AIFF
- Drop your M4A files on the box above, or click it to choose files. You can add many at once.
- Adjust the options if you want. The defaults work well for most files.
- Click Download for each AIFF file, or "Download all" to get a ZIP.
Frequently asked questions
Is it safe to convert my files here?
Yes. Conversion happens entirely in your browser. Your files are never uploaded to a server, so nobody else can see them.
Is it free? Are there limits?
It's completely free, with no sign-up, watermarks or daily limits. The only limit is your device's memory for very large files.
Can I convert many M4A files at once?
Yes. Drop as many files as you like; they're converted one after another and you can download them all as a ZIP.
Will converting M4A to AIFF reduce quality?
No. AIFF is lossless, so nothing more is lost. It can't restore detail that M4A compression already removed.
Why is the AIFF file so much bigger than the M4A?
M4A uses lossy compression to keep files small. AIFF stores the audio without that compression, so it needs more space.
Are tags and cover art kept?
Not yet. The sound is converted, but title, artist and album art aren't copied.