How to Convert AIFF to MP3
- Click the drop zone above or drag and drop your AIFF file(s) into it.
- Make sure MP3 is selected as the output format.
- Choose your preferred sample rate (44.1 kHz recommended for most uses).
- Click "Convert All" and wait for the conversion to complete.
- Download your converted MP3 file(s) individually.
What is AIFF?
Audio Interchange File Format (AIFF) — An uncompressed audio format developed by Apple. Similar to WAV in quality, commonly used in professional audio on macOS.
- Format type: Lossless (uncompressed)
- File extension: .aiff
What is MP3?
MPEG Audio Layer III (MP3) — A widely-used lossy audio format that offers good compression while maintaining reasonable audio quality. Ideal for music streaming and portable devices.
- Format type: Lossy
- File extension: .mp3
Why Convert AIFF to MP3?
Converting from AIFF to MP3 significantly reduces file size while maintaining good audio quality. This is ideal for sharing audio online, storing music on portable devices with limited storage, or streaming on the web.
AIFF vs MP3 — Key Differences
| Feature | AIFF | MP3 |
|---|---|---|
| Full name | Audio Interchange File Format | MPEG Audio Layer III |
| Compression | Lossless (uncompressed) | Lossy |
| File extension | .aiff | .mp3 |
Frequently Asked Questions
Is this converter free?
Yes, completely free. There are no limits on the number of conversions, no file size restrictions, and no account required.
Is my audio data safe?
Absolutely. Your files never leave your device. All conversion happens locally in your browser using the Web Audio API — no data is uploaded to any server.
What browsers are supported?
This converter works in all modern browsers including Chrome, Firefox, Safari, and Edge. Some output formats (OGG, WebM, AAC) depend on your browser's MediaRecorder support.
Can I convert multiple files at once?
Yes. You can drop or select multiple AIFF files and they will all be converted to MP3 in sequence.