Winxvideo AI

Home > Video > Convert MKV > Convert MKV to MP3

Posted by Kistent Waung - Contact Author

Top 5 Free Ways to Convert MKV to MP3 Audio

Based on WebM video, MKV is a high-quality and open video format for the web, open source player, handheld devices, including Blu-ray Player and PS5/4 console, and wide acceptance for different formats, like AC3 aka Dolby Digital and VobSub DVD subtitles. Also it embraces high efficient bandwidth usage and lower storage requirements such that you can save band resource and hard disk space.

That being said, you just need audio out of MKV video now and then. To meet such demand, there are countless ways to go on Google results. Yet, your time and energy is limited. Thus, you have to make a choice. We'd like to do you a favor to help you take the essence and discard the dregs. There are 5 free MKV to MP3 audio converter standing out from the crowd. It's no harm to first have a look.

Part 1. Top 5 MKV to MP3 Auido Converters

#1. Winxvideo AI

Winxvideo AI can convert MKV to MP3 128kbps/192kbps/256kbps high quality! It got reviewed by many large and famous technical websites. Like what are said on download.cnet, safety comes first, and this video converter freeware is not bundled with any suspicious plugins nor toolbar while supporting 4K/1080p multi-track HD MKV video.

Moreover, it has 370+ built-in video & audio codes to accept other formats like M2TS, AVCHD, HDTV and BDAV, and standard AVI, MP4, H.264, WMV, MPEG, MOV, FLV, 3GP, QT, TS, MOD and TOD. The complete and classified profiles enable you to convert videos to iPhone, iPad, Android or other devices directly. Uniquely, it is the rare MKV to MP3 video converter with De-interlacing Engine and High Quality Engine that can optimize resulting quality maximally.

Free decode or remux MKV to MP3 using WinX
Free decode or remux MKV to MP3 using WinX

#2. MKV to MP3 Converter Filehippo

Don't get misunderstood. MKV to MP3 converter filehippo is not a specific converter tool. Instead, it's an open source software download site, providing you with a wide selection of free video to audio converters. You can find Free Video to MP3 Converter, Free Video to Audio Converter, Any Video Converter and more software thereon. Here takes Free Video to MP3 Converter for detailed introduction.

Only designed for Windows users, this free MKV to MP3 audio extractor claims to make MKV to MP3 or WAV with lossless quality. To further ensure the resulting audio file quality, it features Preset Editor to let you customize its pre-configured profiles via "Quality" menu so as to better fit your playback device with best audio quality.


No matter what it says on Filehippo or its official product page, the so-called "lossless quality" doesn't exit once it comes to video transcoding. So be rational in terms of lossless resulting quality (lossy data compression is common). Certainly, in general, this free audio extractor is absolutely a qualified tool, letting you also decode MKV to AVI, IFV, MOV, MP4, WMV modern formats. More MKV to MP3 audio free converters are available on this site if you need more output format profiles.

#3. VLC player

Don't look anywhere else or download any tools if you've already installed VLC player on your Windows or macOS. A video to audio converter role can also be well played by VLC player.

The below screenshot clearly explains the output formats VLC supports (words explanation is redundant). And the whole MKV to MP3 procedure is easy peasy, needless to repeat it here to add more burden on you.

Free Convert MKV to MP3 using VLC
Free Convert MKV to MP3 using VLC

#4. CloudConvert

CloudConvert is an online video converter that is able to convert MKV to MP3 easily and free. Actually, it supports to convert videos and audios between 200+ formats, not only including MKV to MP3, but also more conversions like MKV to MP4, HEVC to H.264, AVI to MP4, TS to FLV etc. Most conversion types can be adjusted to your needs such as setting the quality and many other options. This helps you output video files of high quality.

And though it's an online MKV to MP3 converter, it has the highest data security. No one except you will ever have access to your files. You don't have to install any third-party software or plugins to fulfill the MKV to MP3 conversion. But the defect comes that it depends more on network, which could be slow sometimes. And it has a file size limit of 1GB for free accounts.

online MKV to MP3 converter
Free Convert MKV to MP3 using VLC

#5. Convertio

Convertio is another online choice for MKV to MP3 conversion. Likewise, it has the similar pros and cons of ConvertConvert, for example, high quality output, wide formats support, file size limit and so on. But the maximum permissible file size for the conversion is 100MB.To increase the file size, you must sign up and purchase the 'Light,' 'Basic,' and 'Unlimited' plan. The plan differs with concurrent conversion rates, conversion time per file, and conversion minutes per day, etc.

convert MKV to MP3 online
convert MKV to MP3 online

Part 2. How to Convert MKV to MP3 for Free Easily?

Well, take Winxvideo AI as an example. It can recognize and convert almost any video format, including multi-track MKV, and it is 100% free without any adware, plug-in, bundle, spyware or virus. Here's how you can convert MKV video to MP3 audio:

Step 1. Download the Free MKV to MP3 Converter

Head over to the official page of Winxvideo AI and figure out its main function and extended capabilities. It comes with two versions for you to choose to free convert MKV to MP3 on Mac or Windows OS. But here we just take the operation on PC as an example.

Step 2. Select the MKV Video File to Convert

After installing, open the MKV to MP3 audio converter. Then click on "+ Video" button on the top left, browse in the hard drive to add the source Matroska or HEVC/H.265 video with the file extension of *.mkv. Bulk MKV to MP3 conversion is supported, as well.

Step 3. Choose MP3 as the Output Format

On the Output Profile interface, click on "Music" and choose "MP3" on the right. MP3 format is recommended as it is for iTunes, iPhone and so on. After confirming, click OK.

extract MP3 audio from MKV using WinX
extract MP3 audio from MKV using WinX

Step 4. Change or Fine Tune the Settings

For example, the default audio codec is mp3lame, sample rate is 44100 and BitRate is 256. Optionally, you can tap the wheel-like button next to the MP3 format icon to change or fine tune the settings.

Step 5. Specify the Destination

Browse and choose a destination folder as the final path to save the output MP3 audio file.

Step 6. Start Converting MKV to MP3/AAC/AC3

After all is done, just hit the "RUN" button on the lower part and let the free MKV to MP3 conversion begins. A short while later, you can get the MP3 video converted from the MKV movie. >> AAC vs MP3

Still have trouble on Converting MKV to MP3 on Windows (10)/Mac, just Mail Us >>


author - Kistent Waung

Kistent Waung twitter icon

Graduated from Nanyang Technological University, Singapore, she employs herself in IT related content creation (since 2013) and happens to perfectly combine her major (computer & science) and her gusto (writing). She's seasoned at offering video audio conversion workarounds and always passionate about new trends, from hot HEVC, 4K to the new AV1 codec.

Home > Video > Convert MKV > Convert MKV to MP3