The converter also works in reverse, so you can convert other "Compressed Audio File" formats to AAC without using software like FFmpeg or a similar tool.
TTA to AAC
AU to AAC
WV to AAC
DTS to AAC
FLAC to AAC
MP3 to AAC
PCM to AAC
WAV to AAC
APE to AAC
GDV to AAC
CPK to AAC
MPC8 to AAC
About AAC files
The .aac file format stores audio data compressed using Advanced Audio Coding, a lossy compression standard established by the ISO/IEC MPEG group. Designed as the official successor to MP3, it delivers higher sound quality at identical bit rates. You can play these files using VLC media player, Apple Music, or process them via command-line tools like FFmpeg. For more background, see the Wikipedia article on Advanced Audio Coding. Despite its efficiency, raw .aac files present significant practical challenges. While modern smartphones support the format natively, legacy car stereos, older MP3 players, and basic smart TVs often fail to recognize it. Furthermore, a raw .aac file lacks the standard tagging structures found in container formats, meaning album art and track metadata often disappear when moving files between devices. In rare cases, older .aac files might also be wrapped in FairPlay DRM protection, restricting playback to authorized software. Lastly, editing a lossy format directly introduces generation loss. Drag and drop your file to analyze and convert it - free, online, and without installing software. For maximum compatibility with older hardware, convert to MP3. If you need to edit the audio in a Digital Audio Workstation, convert to an uncompressed WAV to prevent further quality loss. For better metadata support while keeping the AAC codec, convert to M4A.
Use Convert.Guru to open and convert your AAC file.
If you want to convert AAC file to M4A, M4R, ALAC or APE, you can use FFmpeg or similar software from the "Lossy Audio Compression" category. In the File menu, look for Save As… or Export….
To convert MIDI, MID or RA files to AAC, try FFmpeg or another comparable tool in the "Lossy Audio Compression" category.
The AAC Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our AAC converter.