AIFF to M4A converter
Convert AIFF to M4A in seconds, free and unlimited. No upload, no sign-up, no watermark: your audio never leaves your device. Re-encodes the audio into M4A.
Last updated
Quick answer: To convert AIFF to M4A, add the AIFF file to the iHateFiles AIFF to M4A 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. Re-encodes the audio into M4A.
Should you convert AIFF to M4A?
Do this to make a lossless recording small enough to share or carry around. Keep the AIFF as the master copy.
AIFF is lossless and M4A is not
This is the conversion lossy formats were designed for: from about 10 MB per minute to 1 to 1.9 MB. At 192 kbps or more almost nobody can hear the difference in music. Keep the AIFF as your master if you might need to convert again.
Where the M4A will play
M4A plays on Apple devices, Android, browsers and most modern players.
AIFF and M4A side by side
| AIFF | M4A | |
|---|---|---|
| Inside the file | uncompressed big-endian PCM | AAC |
| Compression | Lossless | Lossy |
| Carries sound | Yes | Yes |
| One minute of stereo | about 10 MB | 1 to 1.9 MB |
| Plays on | Macs, Logic, GarageBand and most DAWs | Apple devices, Android, browsers and most modern players |
| Here | Read and write | Read and write |
What usually goes wrong
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.
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.
How to convert AIFF to M4A
- Add your AIFF file. It is read from your disk and stays there.
- Check the settings. The output format is already set to M4A.
- Press convert and the M4A file is saved back to your device.
Questions
How do I convert AIFF to M4A?
Open this page, add your AIFF 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 AIFF to M4A 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 M4A lose quality?
M4A is a lossy format, so some detail is discarded. The quality control on this page decides how much. The default is set high enough that most people cannot see the difference.
Can I convert several AIFF files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.