Convert MKV to MP3 offline by JavaScript

Convert MKV to MP3 offline

Convert local MKV 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 MKV to MP3 offline

Choose local MKV 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	MKV	MP3
Full name	Matroska Video	MPEG-1 or MPEG-2 Audio Layer III
File extension	.mkv, .mk3d, .mka, .mks	.mp3
MIME	video/x-matroska, audio/x-matroska	audio/mpeg, audio/MPA, audio/mpa-robust
Developed by	www.matroska.org	Fraunhofer Institute
Type of format	Container format	Digital audio
Introduction	The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows.	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.