MP3 to AAC Converter

Select files for conversion or just drag and drop them to the upload area

How to convert MP3 files to AAC online?

Step 1.

Upload MP3-file

Click "Choose File" button to select a mp3 file on your computer. MP3 file size can be up to 50 Mb.
Step 2.

Convert MP3 to AAC

Click "Convert" button to start conversion.
Step 3.

Download your AAC

Let the file convert and you can download your AAC file right afterwards.

Information about MP3 and AAC file formats

Name MP3 AAC
Full name MP3 - MPEG-1 or MPEG-2 Audio Layer III AAC - Advanced Audio Coding
File extension .mp3 .aac
MIME type audio/mpeg, audio/MPA, audio/mpa-robust audio/aac
Developed by Fraunhofer Institute Bell Labs, Fraunhofer Institute etc.
Type of format Digital audio Audio compression format
Description MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players. 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.
Technical details The use of lossy compression is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size of the CD file created from the original audio source. 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.
Associated programs VLC media player, MPlayer, Winamp, foobar2000. foobar2000, AIMP, DirectShow, QuickTime, VLC media player.
Wiki https://en.wikipedia.org/wiki/MP3 https://en.wikipedia.org/wiki/Advanced_Audio_Coding