AIFF to MP3 Converter
Convert AIFF to MP3 and turn big uncompressed exports from Logic Pro, GarageBand and other Mac apps into files you can email, share and play anywhere. Both .aiff and .aif work, and the page starts at 320 kbps, the MP3 maximum, because your source is lossless. Files are read from your disk and never uploaded, so a long album bounce never has to squeeze under an upload limit.
- Runs on your device
- WebCodecs · GPU
- FFmpeg
- Works offline
Updated
Drop your audio files here
How to convert AIFF to MP3
Step 1: Drop your .aiff or .aif files on the box above.
Step 2: Keep Bitrate at 320 kbps for masters, or choose 192 kbps for smaller listening copies.
Step 3: Press Convert and download the MP3s, one at a time or as a ZIP.
Good to know
Settings explained
- Bitrate
- 128 kbps is fine for speech, 192 kbps for music, 320 kbps is the MP3 maximum.
- OGG codec
- Godot, Unity and older players need Vorbis. Vorbis uses the FFmpeg engine (≈31 MB, downloaded once).
- Opus: Smaller
- Vorbis: Games, older players
Formats
Batch-friendly: add many files and they are processed one after another — if one fails, the rest still finish.
How it runs
- Hardware video engine
- Video is decoded and encoded by your device’s media hardware through WebCodecs — usually several times faster than real time.
- FFmpeg (when needed)
- Older formats and a few filters use FFmpeg compiled to WebAssembly. It downloads once (about 31 MB) the first time it is needed and is cached for offline use.
AIFF vs WAV vs MP3
AIFF and WAV hold the same thing, uncompressed PCM, in containers from Apple and Microsoft respectively; they sound identical and are the same size. MP3 is lossy and roughly a quarter of the size at 320 kbps.
| AIFF / AIF | WAV | MP3 (320 kbps) | |
|---|---|---|---|
| From | Apple | Microsoft and IBM | MPEG |
| Compression | None | None | Lossy |
| Size per minute (44.1 kHz, 16-bit stereo) | 10.6 MB | 10.6 MB | 2.4 MB |
| Size per minute (48 kHz, 24-bit stereo) | 17.3 MB | 17.3 MB | 2.4 MB |
| Typical source | Logic, GarageBand, Mac CD rips | Windows apps, recorders | Everywhere |
What is an AIFF file?
An AIFF file (Audio Interchange File Format) is Apple’s container for uncompressed PCM audio, the Mac counterpart of WAV. .aif is the same format with a shorter extension. Logic Pro and GarageBand can bounce to it, and many Mac CD rips and sample libraries use it, which is why music producers end up with folders of very large .aif files.
How to convert AIFF to MP3 on a Mac
Drag the files from Finder onto the drop zone in Safari or Chrome and press Convert; the MP3s are saved to Downloads. If the project is still open, GarageBand can also export MP3 directly when you share the song to disk, and the Music app can create MP3 versions of songs already in its library. This page is quickest for a folder of existing bounces.
Why convert Logic exports to MP3 here
- No upload cap. A 10-minute bounce at 48 kHz, 24-bit is about 173 MB; it never has to leave your Mac.
- Whole folders. Drop every bounce from a session and get a ZIP of MP3s back.
- Starts at 320 kbps. The best MP3 quality is the default, so previews still sound like your mix.
Tips & troubleshooting
Bouncing for a streaming service or a client to master? Keep the AIFF or convert to WAV; send the MP3 only as a preview.
Bounces at different loudness? Run them through normalize audio before converting.
Have WAV or FLAC masters too? Use WAV to MP3 or FLAC to MP3 with the same settings.
AIFF to MP3 Converter FAQ
Does converting AIFF to MP3 lose quality?
Yes, a little, because MP3 is lossy. At 320 kbps the difference from the AIFF is very hard to hear. Keep the AIFF as your master.
Is .aif the same as .aiff?
Yes. Both extensions are the same Audio Interchange File Format; this page accepts either and converts them the same way.
Is there a size limit for AIFF files?
No upload means no upload limit. Large album bounces are read from your disk on your own computer, so the only limit is your device’s memory.
Are my bounces uploaded?
No. Unreleased music stays on your Mac or PC: the conversion runs entirely in your browser.