Convert MP3 to AAC online for free
1: Choose multiple local MP3 files or enter the URL of an online MP3 file. 2: Choose "AAC" as target format and set options. 3: Click the "START CONVERSION" button to convert MP3 files to AAC online.
Choose filesChoose files or enter remote file URLenter remote file URL
Set conversion options (optional)
MPEG-1 or MPEG-2 Audio Layer III
File extension: .mp3
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
File extension: .aac
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.