Bulk AIFF to MP3 Converter Online — Free HD Quality
Drag and drop your multiple AIFF files into this 100% free online AIFF to MP3 converter (.aiff to .mp3), and click the Convert button to bulk convert them to MP3 format in HD quality. Use the quality slider to fine-tune your MP3 output, then download your converted files one by one or as a single ZIP — no signup and no downloads needed, and your original AIFF files are removed from our servers right after. Also see:Convert AIF files to M4A in queue.
Drop your AIFF files here to convert to MP3, or click to browse
Converts .aiff to MP3 (.mp3) in HD quality — bulk, free, no signup
Choose FilesAIFF vs MP3 — File Format Comparison
See how AIFF and MP3 compare across file extension, MIME type, compression, and feature support.
| Feature | AIFF | MP3 |
|---|---|---|
| File Extension | .aiff | .mp3 |
| MIME Type | audio/aiff | audio/mpeg |
| Compression Type | Lossless | Lossy |
| Metadata Support | Yes | Yes |
What Is AIFF Format?
Audio Interchange File Format — Apple's uncompressed audio standard functionally equivalent to WAV but preferred in professional Apple audio workflows and GarageBand projects.
- Compression: Lossless
- Tags & Metadata: Supported
What Is MP3 Format?
MPEG-1 Audio Layer III — the world's most popular compressed audio format, balancing sound quality with small file sizes for music streaming, downloads, and portable devices.
- Compression: Lossy
- Tags & Metadata: Supported