Convert AIFF to MP3 online
Convert a AIFF file to MP3 directly in your browser — the file is never uploaded to a server.
or click to select it
Convert an AIFF file — Apple's uncompressed audio format and the usual export from Logic Pro or GarageBand — into MP3, a compressed format far smaller and easier to share.
AIFF is essentially Apple's version of WAV: uncompressed PCM audio wrapped in a different container, which is why Mac-based recording and production software defaults to it for exports. This tool decodes that raw PCM data and encodes it as MP3, shrinking the file dramatically while keeping it easy to listen to on any device.
Use cases
- Shrink a song exported from Logic Pro or GarageBand as AIFF before sending it to someone for feedback.
- Convert AIFF voiceover or podcast recordings from Mac audio software into MP3 for publishing.
- Turn a large AIFF sample or stem export into a smaller MP3 for quick reference listening.
How it works
- 1
Upload your AIFF file
Drop the file in or select it from your device.
- 2
Adjust the bitrate if you want
A high automatic quality is used by default; you can set a specific bitrate in the options.
- 3
Download the MP3
Once it's done, download the resulting file.
Technical details
Runs ffmpeg.wasm in your browser. Like WAV, a stereo AIFF file at CD quality runs around 10MB per minute since nothing is compressed; encoding the same audio as MP3 at a normal listening bitrate typically cuts that to a tenth of the size or less, which is why AIFF exports from Logic Pro or GarageBand are usually converted before sharing.
Frequently asked questions
What's the difference between AIFF and WAV?
Both store uncompressed PCM audio and sound identical at the same settings; AIFF is Apple's format and the default export from tools like Logic Pro and GarageBand, while WAV is more common on Windows. Converting either to MP3 works the same way.
Why is my AIFF export from GarageBand so large?
AIFF doesn't compress audio at all, so a few minutes of stereo CD-quality sound can easily reach tens of megabytes. MP3 compresses that down significantly with a normally imperceptible quality trade-off.