Convert WMA to MP3 offline by JavaScript

Convert WMA to MP3 offline

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

Files:

Target:

Audio bitrate:

Sample rate:

OUTPUT FILES:

#	File Name	File Size	Actions

How to convert WMA to MP3 offline

Choose local WMA 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	WMA	MP3
Full name	Windows Media Audio	MPEG-1 or MPEG-2 Audio Layer III
File extension	.wma	.mp3
MIME	audio/x-ms-wma	audio/mpeg, audio/MPA, audio/mpa-robust
Developed by	Microsoft	Fraunhofer Institute
Type of format	Audio file format	Digital audio
Introduction	Windows Media Audio (WMA) is an audio data compression technology developed by Microsoft. The name can be used to refer to its audio file format or its audio codecs. It is a proprietary technology that forms part of the Windows Media framework. Each WMA file features a single audio track in one of the four sub-formats: WMA, WMA Pro, WMA Lossless, or WMA Voice.	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.