Convert AAC to MP3 offline

Convert local AAC files to MP3 files offline by JavaScript in your web browser without any software downloads or file uploads!






OUTPUT FILES:
# File Name File Size Actions
How to convert AAC to MP3 offline

Choose local AAC files, choose "MP3" as target audio format, then click the "CONVERT OFFLINE" button to start offline conversions in bulk. Each file can be up to 2GB. Please note this offline audio converter only works in web browsers that support new technologies such as WebAssembly, Shared Array Buffer and Site Isolation. Use online converter instead if this offline converter doesn't work in your web browser.

 

Name AAC MP3
Full name Advanced Audio Coding MPEG-1 or MPEG-2 Audio Layer III
File extension .aac .mp3
MIME audio/aac audio/mpeg, audio/MPA, audio/mpa-robust
Developed by Bell Labs, Fraunhofer Institute etc. Fraunhofer Institute
Type of format Audio compression format Digital audio
Introduction 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. 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.
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