Need to extract audio from an MKV video? This guide reviews 4 free MKV to MP3 converters, including MiniTool Video Converter, VLC Media Player, MiniTool MovieMaker, and Online Audio Converter, and how to use them.

This post gives you a list of 4 MKV to MP3 converters. With these converters, you can convert MKV to MP3 at no cost.

4 Best Free MKV to MP3 Converters

  1. MiniTool Video Converter
  2. VLC Media Player
  3. MiniTool MovieMaker
  4. Online Audio Converter

#1 MiniTool Video Converter

MiniTool Video Converter is a file converter that can handle various video and audio conversions, including MKV to MP3. It comes with advanced features such as converting YouTube video to MP3, creating a custom profile, and changing video resolution.

MiniTool Video ConverterClick to Download100%Clean & Safe

Here is how to convert MKV to MP3 with MiniTool Video Converter.

1. Install and launch MiniTool Video Converter.

2. Click Add Files to upload the MKV video.

MiniTool Video Converter Convert Video interface with the Add Files option selected.

3. Click gear icon > Audio > MP3 > select the audio quality.

MiniTool Video Converter Convert Video interface showing how to set the export file format.

4. Click Convert.

MiniTool Video Converter Convert Video interface with the Convert option selected.

#2 VLC Media Player

We all know that VLC Media Player is a free and open-source multimedia player for video & audio playback. But this media player can also be used as an MKV to MP3 converter to extract MP3 from an MKV video. It’s a lightweight tool, running on all platforms, including Windows, macOS, Android, iOS, Linux, and so on.

Here is how I convert MKV to MP3 with VLC.

1. Open VLC and click Media > Convert / Save.

VLC interface with the Convert or Save option selected in the Media menu.

2. Click Add to import your MKV file.

3. Click Convert / Save.

4. Select Audio - MP3 from the Profile dropdown menu.

5. Click Browse to set a save destination.

6. Click Convert / Start to begin the conversion.

VLC Open Media window showing how to upload MKV file and choose save folder and start conversion.

#3 MiniTool MovieMaker

MiniTool MovieMaker is another free MKV to MP3 converter. It can easily extract MP3 from any popular video file in formats like MKV, MP4, WMV, AVI, MOV, etc.

In addition, it offers many editing features such as trim, split, merge, rotate, flip, reverse, speed up, and slow down. Before converting video files, you can edit your videos as required.

MiniTool MovieMakerClick to Download100%Clean & Safe

Below is a guide on how to convert MKV to MP3 with MiniTool MovieMaker.

1. Install and open MiniTool MovieMaker.

2. Click Import Media Files to add an MKV video.

MiniTool MovieMaker interface with the Import Media Files option selected.

3. Drag the MKV video onto the timeline.

4. Click Export.

MiniTool MovieMaker interface showing how to drag the video to the timeline and export it.

5. Expand the output format option and select MP3.

6. Click Export.

MiniTool MovieMaker Export window showing how to export a video in MP3.

#4 Online Audio Converter

Online Audio Converter is a great choice if you want to do MKV to MP3 conversions online. It lets you convert video and audio files to MP3, WAV, iPhone ringtone, M4A, FLAC, OGG, MP2, and AMR.

What’s more, this tool gives you the options to change the output audio quality, bitrate, sample rate, track info, and reverse audio.

Here is how to use this online tool to convert MKV to MP3.

1. Go to https://online-audio-converter.com/.

2. Click Open files to upload MKV file.

3. Choose mp3.

4. Select the audio quality.

5. Click Convert.

Online Audio Converter showing how to convert MKV to MP3.

Conclusion

MKV files often contain audio tracks that you may want to save separately. With the 4 free MKV to MP3 converters introduced above, you can easily extract audio from MKV videos and save it as MP3. Choose the tool that best suits your needs and start converting your files in just a few clicks.

If you have any questions or suggestions about it, please contact support@minitool.com.

People Also Ask

Can I convert MKV to MP3 without losing audio quality?
No, not completely. MP3 uses compression, so some audio data is removed during conversion. However, if you choose a high bitrate such as 320 kbps, the sound quality will remain very close to the original.
What is the recommended MP3 bitrate?
The best bitrate depends on your needs. 128 kbps is suitable for voice recordings and smaller files, 192 kbps offers a good balance between quality and file size, while 320 kbps provides the best audio quality and is ideal for music.
Can I process multiple MKV files at once?
Yes. Video converters like MiniTool Video Converter supports batch conversion. You can upload multiple MKV files, choose the output format, and click Convert All.
Why won't VLC convert my MKV file to MP3?
If VLC isn't converting your files to MP3, the issue is usually a missing .mp3 file extension or a corrupted cache. Make sure the output file name ends with .mp3 and check that MP3 is selected as the audio codec in the conversion settings.
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About The Author

Mia

Position: Columnist

Mia joined MiniTool as an SEO editor following her university graduation, bringing a strong foundation in digital content optimization. She has since developed extensive expertise in creating technical articles and delivering practical solutions for video conversion, video compression, and audio transcription. She remains current with emerging software trends and continuously refines her content strategy based on real user feedback and industry developments.

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