How to open a .aac file?

AAC files can be opened by most music players and audio editors. You can also convert AAC to other formats online using SquishConvert.

How to convert a .aac file?

Upload your .aac file to SquishConvert, select an output format, and click Convert. Your converted file will be ready to download in seconds.

Audio format

.aac

Advanced Audio Coding

AAC is the successor to MP3, offering better sound quality at lower bitrates. It's the default audio format for Apple Music, YouTube, and most streaming platforms.

MIME type

audio/aac

Developer

ISO / Fraunhofer / Dolby / Sony / Nokia

Introduced

1997

Advantages

Better quality than MP3 at same bitrate
Default format for iTunes and Apple Music
Widely used in streaming
Supports up to 48 channels

Limitations

Patent-encumbered
Slightly less universal than MP3
Encoding quality varies by implementation
DRM can restrict usage

When to use AAC

Apple Music and iTunes

YouTube and streaming platforms

Mobile music playback

Digital broadcasting (DAB+)

Technical details

AAC uses modified DCT compression with improved coding efficiency over MP3. It supports sample rates from 8 to 96 kHz, up to 48 channels, and bitrates from 8 to 529 kbps per channel.