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AIFF to MP3 - Online Audio Converter
Convert AIFF to MP3 online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AIFF to MP3
Drop AIFF audio here or click to select
AIFF, AIF
MP3 (libmp3lame)
About AIFF to MP3
Convert AIFF to MP3. AIFF is Apple's IFF-based counterpart to WAV with PCM audio. MP3 is the MPEG-1 Layer III codec, playable on virtually every device. Repeated re-encoding stacks artifacts; convert from the master..
Why convert AIFF to MP3?
- Smaller files with MP3 lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AIFF vs MP3
| Codec | PCM 16-bit | libmp3lame |
|---|---|---|
| Compression | uncompressed | lossy |
| Sample behavior | Full quality kept | Quality set by bitrate |
| Typical use | AIFF is Apple's IFF-based counterpart to WAV with PCM audio. | MP3 is the MPEG-1 Layer III codec, playable on virtually every device. |
When not to convert AIFF to MP3
- Skip MP3 for archival masters: lossy compression discards detail, so keep the AIFF original.
- Keep a master copy: repeated exports stack small losses, so archive AIFF before batch MP3 shares.
Limits
Starting point: AIFF - AIFF is Apple's IFF-based counterpart to WAV with PCM audio. Metadata support is thinner than WAV's; check tags after conversion. Repeated re-encoding stacks artifacts; convert from the master. Encode MP3 (libmp3lame) from AIFF at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert AIFF to MP3?
Drop your AIFF file onto this page, choose quality and codec settings, then click Convert. The result downloads as MP3 instantly. All processing runs in your browser.
What codec is used for MP3?
The default codec for MP3 is libmp3lame. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.