M4A to AIFF converter
Convert M4A to AIFF in seconds, free and unlimited. No upload, no sign-up, no watermark: your audio never leaves your device.
Last updated
Quick answer: To convert M4A to AIFF, add the M4A file to the iHateFiles M4A to AIFF converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. A lossless target, so nothing is thrown away in this step.
Should you convert M4A to AIFF?
Do this when an editor, DAW or device needs AIFF. It will not make the M4A sound any better, and the file grows several times over.
AIFF will not restore what M4A removed
AIFF stores every sample exactly, including the damage M4A compression already did. Expect about 10 MB per minute instead of 1 to 1.9 MB, for audio that sounds identical. Do it because an editor or device needs AIFF, not to improve the sound.
Where the AIFF will play
AIFF plays on Macs, Logic, GarageBand and most DAWs.
M4A and AIFF side by side
| M4A | AIFF | |
|---|---|---|
| Inside the file | AAC | uncompressed big-endian PCM |
| Compression | Lossy | Lossless |
| Carries sound | Yes | Yes |
| One minute of stereo | 1 to 1.9 MB | about 10 MB |
| Plays on | Apple devices, Android, browsers and most modern players | Macs, Logic, GarageBand and most DAWs |
| Here | Read and write | Read and write |
What usually goes wrong
About the M4A. M4A, M4B, M4R and AAC are largely the same thing with different extensions. Renaming usually works, though it is not something to rely on.
About the AIFF. AIFF and WAV are the same audio at the same size; only the byte order and metadata differ. Converting between them changes nothing you can hear.
How to convert M4A to AIFF
- Add your M4A file. It is read from your disk and stays there.
- Check the settings. The output format is already set to AIFF.
- Press convert and the AIFF file is saved back to your device.
Questions
How do I convert M4A to AIFF?
Open this page, add your M4A file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this M4A to AIFF converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to AIFF lose quality?
AIFF is lossless, so this step throws nothing away. If the original was already a lossy format, the damage it did cannot be undone, but nothing further is lost.
Can I convert several M4A files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.