MKV to MP3 Converter: Free, No Upload
Convert MKV to MP3 in the browser, even a large film file, with no upload
Your files never leave this device
- Free
- Large files welcome
- No upload
How to convert MKV to MP3
- 1
Drop the file into the MKV to MP3 converter
- 2
Keep MP3, or pick the format marked Original to copy the track
- 3
Convert, check the sound, and download
What you can do
Audio and video files
Open MP4, MOV, MKV, WEBM, M4A, WAV, FLAC, OGG, OPUS, AAC, and MP3 files, and save them as MP3, WAV, M4A, FLAC, or OGG
Sound from a video
Save the sound of a film, a talk, or a music video as its own file, and keep it unchanged when you pick the format marked Original
Many files at once
Drop a whole folder, convert every file with one press, and save them all with Download all
Settings you control
Pick the bitrate, keep one part with Trim, make it mono, change the sample rate, fade the ends, or even out the loudness
Nothing is uploaded
Your files convert on your device, so a private recording never leaves it
Works in your browser
Use it on Windows, Mac, iPhone, iPad, or Android, with nothing to install and no account
The MKV container
MKV is short for Matroska. One file can hold video, many audio tracks, and subtitles.
| Detail | What it means for the MP3 |
|---|---|
| Audio track used | The main audio track of the file. Other tracks are left out. |
| Sound codecs | Common ones are AAC, Opus, Vorbis, FLAC, AC-3, and DTS. Many browsers cannot read AC-3 or DTS. A note appears when a file has that sound. |
| Video and subtitles | Both are left out. Only the sound becomes the MP3. |
| Size | A film MKV can be several GB. Two hours of MP3 at 192 kbps is about 173 MB. |
| Quality | MP3 encodes the sound again, so a little detail is lost. The format marked Original copies the track with no change. |
| Plays on | An MKV needs a video player such as VLC. An MP3 plays in every music app and car. |
Take the sound from an MKV
Large files
Large files are the reason to skip uploads. Your browser reads the MKV from your disk in parts, so a film file needs no upload and no wait for one.
With VLC
For MKV to MP3 VLC uses Media, Convert and Save. Add the file, press Convert, choose Audio - MP3, and press Start.
On Mac
For MKV to MP3 Mac users can convert in Safari or Chrome. QuickTime does not open MKV files.
MKV audio extract
For an MKV audio extract with no loss, pick the format marked Original. AAC becomes M4A, Opus or Vorbis becomes OGG, and FLAC stays FLAC.
Questions
- How do I convert MKV to MP3 with VLC?
- Open Media, then Convert and Save, and add the MKV. Press Convert, choose the Audio - MP3 profile, set a file name, and press Start.
- How do I convert MKV to MP3 on Mac or Windows?
- Use Safari, Chrome, Edge, or Firefox. Drop the MKV and press Convert. There is nothing to install.
- How do I convert MKV to MP3 without losing quality?
- MP3 is lossy, so some loss always happens. Pick High, 320 kbps, to keep it small, or pick the format marked Original to copy the track with no loss at all.
- What is an MKV file?
- It is a Matroska video file. The format is open and free to use, and it is common for films and TV recordings.
- Which audio track is used when the MKV has many?
- The main audio track. To get another language, change the track order or the default track first with a tool such as MKVToolNix.
- Can I convert a large MKV?
- Yes. We set no size cap. Your device memory is the limit, and the MP3 result is small.
- Are my MKV files uploaded?
- No. The browser reads the file on your device and sends nothing.
Privacy
An MKV to MP3 online site must upload gigabytes before it starts. Your MKV converts in the browser tab and stays on your device. It is MKV to MP3 free, with no account.
After the film
Suparelay calls any phone in any country from this browser tab.