AAC to AIFF - Convert audio online

Conversion Results:
# Output File Source File Action
How to convert AAC to AIFF:

1. Click the "Choose Files" button to select multiple files from your local device, or click the "URL" button to choose an online file. The source file can also be video format. Video and audio file size can be up to 200M. You can use the file analyzer to get the source audio's detailed information such as track name, genre, bitrate, and sampling rate.

2. Set the target audio format, bitrate, and sample rate. The target audio format can be WAV, WMA, MP3, OGG, AAC, AU, FLAC, M4A, MKA, AIFF, OPUS, or RA.

3. Click the "Convert Now!" button to start batch conversion. It will automatically retry conversion on another server if one fails; please be patient while converting. The output files will be listed in the "Conversion Results" section. Click the icon to show the file QR code or save the file to cloud storage services such as Google Drive or Dropbox.

AAC vs AIFF:
Name AAC AIFF
Full name Advanced Audio Coding Audio Interchange File Format
File extension .aac .aiff, .aif, .aifc
MIME audio/aac audio/x-aiff, audio/aiff
Developed by Bell Labs, Fraunhofer Institute etc. Apple Inc.
Type of format Audio compression format Audio file format, container format
Introduction Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at similar bit rates. AAC has been standardized by ISO and IEC, as part of the MPEG-2 and MPEG-4 specifications. Audio Interchange File Format (AIFF) is an audio file format standard used for storing sound data for personal computers and other electronic audio devices. The format was developed by Apple Inc. in 1988 based on Electronic Arts' Interchange File Format (IFF, widely used on Amiga systems) and is most commonly used on Apple Macintosh computer systems.
Technical details AAC supports inclusion of 48 full-bandwidth audio channels in one stream plus 16 low frequency effects channels, up to 16 "coupling" or dialog channels, and up to 16 data streams. The quality for stereo is satisfactory to modest requirements at 96 kbit/s in joint stereo mode; however, hi-fi transparency demands data rates of at least 128 kbit/s. The audio data in most AIFF files is uncompressed pulse-code modulation (PCM). 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. There is also a compressed variant of AIFF known as AIFF-C or AIFC, with various defined compression codecs.
Associated programs foobar2000, AIMP, DirectShow, QuickTime, VLC media player. iTunes
Sample file sample.aac sample.aiff
Wikipedia AAC on Wikipedia AIFF on Wikipedia