Convert AIFF to MP3
Shrink a big lossless AIFF into a small MP3 that plays anywhere. The conversion happens right in your browser, so nothing gets uploaded.
Why convert AIFF to MP3?
AIFF is Apple's uncompressed PCM format, so a bounce out of Logic Pro or a track from an old iTunes library can run to tens of megabytes per song. MP3 is what you reach for when you need to email a rough mix, upload to a blog, load a car USB stick, or drop a demo into a Discord channel. Every phone, browser, DAW, and cheap Bluetooth speaker reads MP3 with no codec pack and no fuss. When the listener or platform just needs to hit play and does not care about a studio master, MP3 is the safe default.
Quality and file size
This step re-encodes the audio and discards data to make the file small, so it is lossy by design. At 320 kbps most people cannot pick the MP3 apart from the AIFF original, and it lands at a fraction of the size. If you need to save more room, 192 or 256 kbps is still clean for casual listening. Keep the AIFF as your master and treat the MP3 as a shareable copy, because converting the MP3 back later will not recover the detail this encode throws away.
AIFF to MP3: common questions
Will the MP3 sound as good as the AIFF?
Close, but not identical. MP3 is lossy, so encoding drops some data to shrink the file. At 320 kbps the difference is inaudible to most listeners, while the file becomes far smaller than the AIFF.
What bitrate should I choose?
Use 320 kbps for the best MP3 quality, or 192 to 256 kbps for smaller files that still sound good on phones and car stereos. Lower bitrates trade audible detail for size.
Is my AIFF uploaded anywhere?
No. The conversion runs entirely in your browser using FFmpeg compiled to WebAssembly. Your AIFF never leaves your device, and we never see it, store it, or train on it.
How much smaller will the file be?
A lot smaller. A CD-quality AIFF is roughly 10 MB per minute, while a 320 kbps MP3 is closer to 2.4 MB per minute, and less at lower bitrates.
Who makes this?
We're the small team behind Xport Studio, a private, fully offline app for AI vocals, stems, and mastering. These free tools are side experiments we wanted to share. No upsell, but if you're curious about the bigger thing, take a look.