Convert AAC to MP3 offline by JavaScript

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!

Files:

Target:

Audio bitrate:

Sample rate:

Show conversion logs

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. File size 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.

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.