AIFF to MP3 Converter
Convert AIFF (Audio Interchange File Format) files to MP3 format for universal compatibility and smaller file sizes. Compress lossless Apple audio to efficient MP3. Professional-quality audio conversion powered by FFmpeg, all processing happens securely in your browser.
Recommended Settings
For Best Quality
- •VBR Quality 0-2 for transparent quality
- •320 kbps CBR for maximum quality
- •Ideal for music and archival
For Balanced Use
- •192 kbps CBR or VBR Q2 recommended
- •Great quality with reasonable file size
- •Perfect for most listening scenarios
Pro Tips
- •VBR usually provides better quality at smaller file sizes
- •192 kbps is transparent to most listeners
- •Use CBR for streaming or compatibility requirements
Most Popular
Most users choose VBR Quality 2 or 192 kbps CBR for excellent quality and efficiency
When to Use This Tool
Convert AIFF to MP3 for universal playback on all devices, from smartphones to car stereos.
Recommended: 192-320 kbps CBR
Reduce large uncompressed AIFF files to manageable MP3 sizes while maintaining excellent quality.
Recommended: VBR Quality 2-4
MP3 is ideal for music libraries and podcast distribution due to wide compatibility and efficient compression.
Recommended: 192 kbps CBR or VBR Q2
How It Works
Upload your AIFF audio file
Select CBR or VBR encoding mode
Choose desired bitrate or quality level
FFmpeg processes MP3 encoding
Download your converted MP3 file
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by FFmpeg.wasm (WebAssembly) for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What is the difference between CBR and VBR?
CBR (Constant Bitrate) maintains the same bitrate throughout, resulting in predictable file sizes. VBR (Variable Bitrate) adjusts the bitrate based on audio complexity, often providing better quality at smaller file sizes.
Which mode should I use?
For most uses, VBR quality 2-4 provides excellent results with smaller file sizes. Use CBR for streaming or when you need predictable file sizes.
What bitrate is recommended?
192 kbps CBR or VBR quality 2 provides excellent quality for most listeners. 320 kbps CBR or VBR quality 0 is near-transparent quality. Lower settings (128 kbps) are suitable for podcasts or voice.
Will I lose quality converting from AIFF?
AIFF is lossless while MP3 is lossy, so there will be some quality loss. However, with good settings (192+ kbps or VBR Q2+) the difference is minimal for most listeners. The benefit is much smaller file sizes.
How much smaller will my files be?
MP3 files are typically 10-20x smaller than AIFF. A 50 MB AIFF file will become around 3-5 MB as MP3, depending on your quality settings.