Convert AIFF to AAC
Convert any audio file to AAC format online for free. Fast, secure, and easy-to-use audio to AAC converter with no software installation required.
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Max file size: 50 MBMax duration: 30 min
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How to Use AIFF → AAC
Upload File
Drag and drop your AIFF file or click to browse. Supports files up to 1GB.
Convert
Select AAC as your output format and click convert. Our servers will process your file instantly.
Download
Download your converted file instantly. The download link expires in 1 hour for security.
Why Choose Scriptivox AIFF to AAC Converter?
Fast Conversion
Our powerful servers process your files quickly, delivering converted files in seconds.
100% Free
Convert your files completely free with no hidden costs or subscription fees.
Secure & Private
Your files are encrypted and automatically deleted after conversion. We never store or share your data.
No Installation
Works directly in your web browser. No software download or installation required.
AIFF vs AAC: format comparison
How the two formats differ on the things that change your result.
| Specification | AIFF (source) | AAC (result) |
|---|---|---|
| Container | IFF / AIFF | ADTS / raw AAC |
| Developed by | Apple | MPEG / Fraunhofer IIS |
| Introduced | 1988 | 1997 |
| Audio codecs | PCM | AAC-LC, HE-AAC |
| Compression | Uncompressed | Lossy |
| Max sample rate | 192 kHz | 96 kHz |
| Max channels | 8 | 8 |
| Gapless playback | Yes | Partial |
| Metadata / tags | ID3 chunk (limited) | ID3v2 (limited in ADTS) |
| Approx. file size | 10–32 MB per minute | 0.72–1.92 MB per minute |
| Licensing | Royalty-free | Patent-licensed |
| Plays natively on | Native: macOS, iOS · Needs a player: Windows, Android, Web browsers | Native: Web browsers, Windows, macOS, iOS, Android, Smart TVs |
| Best for | studio editing, the Apple ecosystem, mastering | streaming services, mobile playback, broadcast |
What changes when you convert AIFF to AAC
Converting AIFF to AAC trades detail for size, and the trade is permanent. Encode at the top of the 96 to 256 kbps range if the file will be edited again later. Size falls from about 21 MB per minute to around 1.3 MB per minute.
AIFF can carry sample rates up to 192 kHz, but AAC tops out at 96 kHz. High-resolution sources are resampled down on the way through.
This conversion buys reach. AAC is natively supported on 4 additional platforms compared with AIFF, which is usually the reason people convert in this direction.
This conversion moves the file toward a different purpose: AIFF suits studio editing, the Apple ecosystem, mastering, whereas AAC is chosen for streaming services, mobile playback, broadcast.
Tags do not transfer verbatim. AIFF stores them as ID3 chunk (limited) while AAC uses ID3v2 (limited in ADTS), so titles and artwork are remapped and unusual custom fields may not survive.
About AIFF to AAC Conversion
Converting AIFF to AAC means moving audio out of the IFF / AIFF container, introduced in 1988, and into ADTS / raw AAC, which arrived in 1997. The two were designed with different priorities, and that is what determines whether this conversion costs you quality, storage, or compatibility.
Developed by Apple in 1988, AIFF stores audio using PCM. That codec choice sets the upper bound on what any conversion can preserve.
AAC, from MPEG / Fraunhofer IIS and dating to 1997, uses AAC-LC, HE-AAC and plays natively on 6 of the six platform categories we track. That combination is usually why people convert into it.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
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