AIFF to AAC Converter
Processing entirely on your device — large files may take a moment.
AAC is the sweet spot when you want modern compression in an open, non-Apple container. If your files are still in AIFF format, this page is the shortcut: AIFF is Apple’s uncompressed audio format, the Mac-side cousin of WAV used in professional audio work.
iLoveConverter processes everything locally on your computer, which makes it private and fast: no upload wait, no server storage, no limits. Add as many files as you like — batch conversion is built in.
How AIFF compares to AAC
| AIFF | AAC | |
|---|---|---|
| Compression | Uncompressed PCM | Lossy (LC/HE/xHE profiles) |
| Quality | Bit-exact | Best-in-class at low bitrates |
| Compatibility | Mac-first | Streaming/broadcast standard |
| Best for | Mac recording and production | Streaming and mobile audio |
How to convert AIFF to AAC
- 1
Select your files
Drag & drop your AIFF files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to AAC". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted AAC file individually, or grab everything at once as a ZIP archive.
About the AIFF format
AIFF is Apple's counterpart to WAV: uncompressed PCM in an IFF container, born with the classic Mac in 1988. It stores the same bit-perfect audio as WAV but carries metadata far better — iTunes-era tags, cover art and loop points all fit natively, which made it the default of Logic Pro and Mac-based audio production.
Functionally the WAV-versus-AIFF choice is platform history: same quality, same sizes, AIFF friendlier on Mac, WAV friendlier everywhere else. Converting between them is a lossless retagging exercise, nothing more.
+ Strengths
- ✓Bit-perfect uncompressed audio
- ✓Better metadata support than WAV
- ✓Native to macOS and Logic Pro
! Limitations
- −Same bulk as WAV (~10 MB/minute)
- −Windows tooling historically prefers WAV
About the AAC format
AAC (Advanced Audio Coding) is MP3's official successor, standardized in MPEG-2 and MPEG-4 and refined over two decades. It is the audio track of YouTube, iPhone voice memos, digital radio and HE-AAC streaming — arguably the most-played codec in history. Files appear either raw (.aac, ADTS stream) or inside M4A/MP4 containers.
Its claim to fame is low-bitrate performance: HE-AAC v1/v2 keep speech and music listenable at 24–64 kbps, where MP3 collapses. Raw .aac streams carry weaker tagging than the M4A container, which is why music libraries prefer M4A even when the codec is identical.
+ Strengths
- ✓The standard of streaming, mobile and broadcast
- ✓Excellent low-bitrate behavior (HE-AAC)
- ✓Better than MP3 at equal bitrate
! Limitations
- −Raw .aac files tag poorly
- −Flavor fragmentation (LC/HE/xHE) confuses tooling
Why convert AIFF to AAC?
Converting makes sense where the strengths of AAC meet what AIFF cannot give you. The standard of streaming, mobile and broadcast Meanwhile Same bulk as WAV (~10 MB/minute) One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this AIFF to AAC converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for AIFF to AAC?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Will converting AIFF to AAC reduce audio quality?
If AAC is lossless, the output contains everything the AIFF file contains — no further loss is added. If AAC is lossy, one recompression pass is unavoidable; the quality slider controls how much. Loss that already happened in the source file can never be undone by converting.
Can I convert a whole folder of AIFF files?
You can select many files at once and they are processed in a single batch. Output files land in one ZIP download when there is more than one result.