How to use the AIFF to MP3 converter
- Add the AIFF or AIF files, or drop a whole bounce folder.
- Choose 320 kbps for mixes you hand to others, 192 kbps for everyday listening.
- Convert and save the MP3s.
From uncompressed PCM
AIFF holds raw PCM, typically 16 or 24 bit, stored big-endian. At CD quality that is about 10 MB a minute; a 192 kbps MP3 cuts it by around 86%. AIFF-C files using compressed audio such as IMA ADPCM or µ-law are decoded as well.
A 24-bit bounce gives LAME slightly more precision to work from than a 16-bit one, which can make the MP3 a touch cleaner.
Bounces and markers
A mix exported at 48 kHz stays at 48 kHz in the MP3. MP3 cannot hold the markers or loop regions saved in an AIFF, so those are left out.
MP3 is lossy, so keep the AIFF wherever you may still edit or remix the track. Send the MP3 for quick listening notes and the AIFF when someone needs to work on the mix.
Freeing space from old CD imports
An album imported as AIFF takes about 600 MB. As 256 or 320 kbps MP3 it shrinks to a fraction of that and still sounds the same on everyday speakers and headphones.
Drop whole album folders and each track is converted in order, then bundled into one ZIP.
Questions
Do I need a Mac?
No. The page decodes AIFF itself, so Windows, Linux, Chromebooks and phones work too.
MP3 or AAC for Apple devices?
Every iPhone, iPad and Mac plays both. If AAC is your preference, the audio converter writes M4A.
Is the conversion lossless?
No. MP3 is lossy, so treat the MP3 as a listening copy and keep the AIFF as the master.
Does a 48 kHz bounce stay at 48 kHz?
Yes, unless you choose another rate under More settings. MP3 supports up to 48 kHz.