Bulk AAC to AIF Converter Online — Free HD Quality
Drag and drop your multiple AAC files into this free online AAC to AIF converter (.aac to .aif), and click the Convert button to bulk convert them to AIF format in HD quality. Use the quality slider to fine-tune your AIF output, then download your converted files one by one or as a single ZIP — your original AAC files are removed from our servers right after.
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PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
AAC vs AIF — File Format Comparison
| Feature | AAC | AIF |
|---|---|---|
| File Extension | .aac | .aif |
| MIME Type | audio/aac | audio/aiff |
| Compression Type | Lossy | Lossless |
| Metadata Support | Yes | Yes |
What Is AAC Format?
Advanced Audio Coding — the successor to MP3 adopted by Apple, YouTube, and mobile platforms; delivers better quality than MP3 at the same bitrate, especially below 128 kbps.
- Compression: Lossy
- Tags & Metadata: Supported
What Is AIF Format?
Audio Interchange File Format (short extension) — the .aif variant of AIFF used by older Apple software and some DAWs; functionally identical to .aiff with the same uncompressed PCM quality.
- Compression: Lossless
- Tags & Metadata: Supported
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