AIFF, short for Audio Interchange File Format, is an audio file format standard developed by Apple for storing sound data for personal computers and other electronic audio devices. The audio data that most AIFF files contain is uncompressed. This type of AIFF files uses much more disk space than lossy formats like MP3—about 10 MB for one minute of stereo audio at a sample rate of 44.1 kHz and a bit depth of 16 bits.

AIFF is undoubtedly better than MP3 in sound quality, but it takes up more storage space and is not as popular as MP3, for the convenience of mobile playback, I suggest people who have AIFF files in their computer convert AIFF to MP3. To convert AIFF to MP3 Mac users do have a few good choices. This post would show you a few useful Mac AIFF to MP3 Converters to convert AIFF to MP3 and the guidance on how to convert AIFF to Mp3 on Mac.

Using Professional AIFF to MP3 Converter Mac to Convert AIFF to MP3

Leawo Video Converter for Mac is a professional video and audio converter for converting videos and audios. It's one of the best AIFF to MP3 Converter for Mac to convert AIFF to MP3 Mac users could have.

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Video Converter for Mac 

☉ Supports video and audio conversions between all audio and video formats.

☉ Output file to multiple devices for playback.

$29.95
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The content below shows you how to use Leawo AIFF to MP3 Converter Mac to convert AIFF to MP3:

Step 1: Import source AIFF file

Open Leawo Video Converter for Mac, enter Video Converter section. To add source AIFF file to the converter, click the "Add file" button on the right side of the interface or drag AIFF file directly to the interface.

Load source files
Choose output format

Step 2: Choose MP3 as output format

After importing source file, go to format panel to select MP3 as output format. To enter the format panel, click the button on the left side of the big green Convert button and click "Change" in the middle of the followed drop-down menu. There are four sections in the format selecting panel. Go to Format section and choose MP3 in Common Audio.

Step 3: Customize audio parameters

After choosing MP3 as the output format, you can customize the output parameters as you like. There's an Edit button on every format tag in format panel. Also you can click the Edit button on the previously mentioned drop-down menu.

Choose output format
Start the conversion

Step 4: Start AIFF to MP3 Conversion

When all the steps above is done, click the green Convert button and a sidebar would come out from the right side of the interface. Set the directory for the output MP3 file and click the "Convert" button to start the conversion.

Using Free AIFF to MP3 Converter Mac to Convert AIFF to MP3

The second AIFF to MP3 Converter Mac is MediaHuman Audio Converter, it's a completely free audio converter that's available for both Windows and Mac OS. To convert AIFF to MP3 Mac users could give this AIFF to MP3 converter Mac a serious try.

The content below is the detailed steps of using MediaHuman Audio Converter to convert AIFF to MP3 on Mac:

1. Run MediaHuman, add source AIFF file to it by dragging the file directly to the interface.

2. Set MP3 as output format and choose the ideal quality you need.

3. Set output directory and click Start button to activate the conversion.

Add file
Choose Format
Output directory

Comparison Between The Two Different AIFF to MP3 Converters

The two converters I introduced could both do a great job on Mac OS converting AIFF to MP3. But they are two totally different kinds of converters. To convert AIFF to MP3 Mac users might want to know which one is more suitable. So let’s make a full comparison between the two converters regarding all the features they have.

Features Leawo Video Converter MediaHuman Audio Converter
Input format supported Audio: FLAC, AAC, AC3, AIFF, AMR, M4A, MP2, MP3, OGG, RA, AU, WAV, WMA, MKA
Video: AVI, MP4, DAT, WEBM, RMVB, MPG, MPEG, VOB, MOV, M4V, QT,FLV, F4V, NSV, NUT, MKV, MTS/M2TS/TS/TP/TRP(AVCHD, H.264, VC-1, MPEG-2 HD), MOD, TOD, DV, WMV, ASF, 3GP, 3G2, DVR-MS		 (Ogg)FLAC(.flac/.oga), Monkey’s Audio(.ape), Wavepack(.wv), TTA(.tta), Apple Lossless(.m4a), TAK(.tak), AIFF, WAV, etc.
Output format supported Audio:FLAC, AAC, AC3, AIFF, AMR, M4A, MP2, MP3, OGG, RA, AU, WAV, WMA, MKA
Video:3D video formats: 3D MP4, 3D WMV, 3D AVI, 3D MKV, 3D YouTube video, etc.
HD video formats: HD MP4,HD AVI,HD MOV,HD TS,HD TRP,HD VOB, HD MPG,HD WMV,HD ASF
Common video formats: MP4-AVC, MP4-XviD, MP4-H.264, AVI, ASF, WEBM, MOV, RMVB, FLV, F4V, TS, DAT, WMV, MKV, XviD, DV, MPEG-1 NTSC, MPEG-1 PAL/SECAM, MPEG-2 NTSC, MPEG-2 PAL/SECAM, DVD-Video NTSC, DVD-Video PAL/SECAM, 3GP, 3G2, DPG		 WMA, MP3, AAC, WAV, FLAC, OGG, AIFF, Apple Lossless format and bunch of others.
Multiple conversion
Merge audios into one
Convert videos between all formats
Convert video from 2D to 3D
Internet access required
Price Trial:Free;1 year:$29.95;life time:$39.95 Free

As you can see, the two converters are different in many ways, if you need not only audio conversion but also video conversion, Leawo Video Converter for Mac is definitely the one for you. But if price is a major concern for you while choosing a AIFF to MP3 converter Mac version, to convert AIFF to MP3 Mac users with concerns like this should probably go with MediaHuman.