AAC Converter

Convert to AAC format online, for free.



Choose Files
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Audio Options
Choose a codec to encode or compress the audio stream. To use the most common codec, select "Auto" (recommended). To convert without re-encoding audio, choose "Copy" (not recommended).
100% represents the original volume. To double the volume, increase it to 200%. To reduce volume by half, select 50%
Enable if you want to reverse audio stream
Trim Settings
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Specify the start position of trim (HH:MM:SS). Leave at 00:00:00 to disable.
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Specify the end position of trim (HH:MM:SS). Leave at 00:00:00 to disable.



How to Convert to AAC?

  1. Click the “Choose Files” button to select your files.
  2. Convert to AAC by clicking the "Convert" button
  3. Once the conversion finishes, click the "Download AAC" button to save the file.

Convert Any File

FreeConvert supports 500+ file formats. Simply upload your files and convert them to AAC format. Alternatively, you can upload AAC files and convert them to a different format. All from the convenience of one tool!

Best Quality

We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional).

Free & Secure

Our AAC converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically delete after a few hours.


Advanced Audio Coding (AAC) is a digital audio file format that reduces file size via lossy compression. Its primary uses are digital TV, digital radio, and Internet streaming. It is the standard audio format for iOS, YouTube, Nintendo, and Playstation. ISO/IEC designated the AAC codec as an improvement to MP3, due its ability to compress file size more efficiently while providing quality similar to uncompressed audio.

 

How to open an AAC file?

For best results, use VLC media player to open AAC files. Alternatively, AAC also opens by default in iTunes. AAC files are ubiquitous, however, and open in many other programs and software.

 

Additionally, since AAC files often serve as the audio files for video games, they open on most popular gaming consoles, such as Nintendo 3DS and Playstation 4.

 

Developed by: ISO/IEC MPEG Audio Committee

Initial Release: 1997

Useful links:

https://en.wikipedia.org/wiki/Advanced_Audio_Coding

https://www.iso.org/standard/43345.html?browse=tc


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