MKV to MP4
Convert MKV to MP4 with stream selection, fast copy, or re-encode modes.
No watermarkFree & unlimited
Processed on our servers and deleted right after. Never stored or shared.
About this tool
- 1
Upload your MKV file
Select the MKV video file you want to convert to MP4.
- 2
Review track selection
Choose which audio and subtitle tracks to include in the MP4 output.
- 3
Convert
The tool remuxes or transcodes the MKV content into an MP4 container.
- 4
Download MP4
Save the converted MP4 file for universal playback compatibility.
- If the MKV already contains H.264 video, the conversion is a fast remux with no quality loss.
- MKV files often contain multiple audio tracks - select only the language you need to reduce file size.
- Subtitle tracks cannot be stored the same way in MP4; they may need to be burned in or embedded separately.
- MP4 is supported on virtually every device and platform, making it the safest format for sharing.
- Convert MKV to universally compatible MP4 format
- Fast remuxing when codecs are already MP4-compatible
- Select specific audio and subtitle tracks to include
- Preserves video quality during container conversion
- Handles multi-track MKV files with multiple languages
- Make MKV videos playable on smartphones and tablets that do not support MKV
- Convert downloaded MKV files for streaming to smart TVs and media players
- Prepare video files for upload to platforms that only accept MP4
- Simplify multi-track MKV files into a single-track MP4 for easier sharing
If the MKV contains H.264 video and AAC audio, the conversion is a container remux with zero quality loss. Other codecs may require transcoding.
Many mobile devices and apps do not support the MKV container. Converting to MP4 solves this since MP4 is universally supported.
MP4 has limited subtitle support compared to MKV. Subtitles can be embedded as a soft track or burned directly into the video.