Convert AIFF to M4A
Free, fast and secure — convert AIFF to M4A right in your browser.
AIFF
M4A
Shrink your AIFF by converting to M4A
Converting AIFF to M4A trades a little detail for a much smaller file, making M4A (AAC) audio the practical choice for fast web pages, email and sharing.
How to convert AIFF to M4A
- 1 Drop your AIFF file into the converter above.
- 2 It is converted to M4A automatically — no settings to fiddle with.
- 3 Download your new M4A file instantly.
AIFF vs M4A
| Feature | AIFF | M4A |
|---|---|---|
| Compression | Lossless | Lossy |
| MIME type | audio/aiff | audio/mp4 |
| Best for | Recording and editing on Mac — converted to MP3 or M4A to share. | High-quality music and voice on Apple devices and modern apps. |
About the formats
AIFF
AIFF audio
AIFF is Apple’s uncompressed, lossless audio format — the Mac counterpart to WAV. It stores studio-grade sound with no quality loss, in large files.
Strengths
- Lossless, studio quality
- Native to macOS
- Ideal for editing
Limitations
- Very large files
- Impractical for streaming
- Overkill for casual listening
Best for: Recording and editing on Mac — converted to MP3 or M4A to share.
M4A
M4A (AAC) audio
M4A holds AAC audio, the default for Apple Music and iTunes. It generally sounds better than MP3 at the same bitrate and is well supported on modern devices.
Strengths
- Better quality than MP3 at equal size
- Default on Apple platforms
- Efficient, modern codec
Limitations
- Slightly less universal than MP3
- Lossy compression
- Occasional legacy-player issues
Best for: High-quality music and voice on Apple devices and modern apps.
Frequently asked questions
Upload your AIFF file above and it is converted to M4A automatically. When it is ready, download your new M4A (AAC) audio — the whole thing takes just a few seconds in your browser.
Converting AIFF to M4A trades a little detail for a much smaller file, making M4A (AAC) audio the practical choice for fast web pages, email and sharing.
Because M4A uses lossy compression, very fine detail may be reduced to save space. For everyday use the difference is hard to spot, and you get a much smaller file in return.
Yes. The converter is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.