MP3 to MKV Converter
Convert MP3 files to MKV in your browser. Choose your file, adjust available settings, then download the converted file.
Maximum 100 MB per file, up to 5 files at a time.
300+ formats supported
Convert between 300+ file formats in your browser.
Fast and easy
Just drop your files on the page, choose an output format and click "Convert".
How to convert MP3 to MKV
- Click the “Choose Files” button to select your files.
- Click on the “Convert” button to start the conversion
- When the status change to “Done” click the “Download” button
About MP3
MPEG Audio Layer III · Audio
A widely supported compressed audio format for music, speech and podcasts.
Opens with: Most phones, browsers, music players and car stereos.
Strengths: Works almost everywhere and supports tags.
Limitations: Lossy compression removes some audio detail.
About MKV
Matroska Multimedia Container · Video container
A flexible video container that can hold several audio tracks, subtitles and chapters.
Opens with: VLC, Kodi and many media players.
Strengths: Supports rich video packages.
Limitations: Some TVs, phones and editors do not accept it.
Why convert MP3 to MKV?
A widely supported compressed audio format for music, speech and podcasts. A flexible video container that can hold several audio tracks, subtitles and chapters.
Keep multiple tracks and subtitles together. Keep the original file until you have checked the result.