Convert WMA to M4A offline by JavaScript

Convert WMA to M4A offline

Convert local WMA files to M4A 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 M4A offline

Choose local WMA files, choose "M4A" 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	M4A
Full name	Windows Media Audio	Audio-only MPEG-4
File extension	.wma	.m4a
MIME	audio/x-ms-wma	video/mp4
Developed by	Microsoft	International Organization for Standardization
Type of format	Audio file format	Media container
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-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. M4A stands for MPEG 4 Audio and is a filename extension used to represent audio files.