Convert MKV video to MP4.
or drop it here · MKV (and most other video formats) · up to 500 MB · MKV files
Processed in your browser. Files are never uploaded.
Files stay on your device. The first run downloads the processing engine once (about 30 MB).
Drop the MKV file onto the tool or click to browse. It opens locally; nothing is uploaded.
Keep “Automatic” to copy compatible streams losslessly, or choose “Re-encode” for the widest playback support.
Press Convert, watch the progress bar, preview the MP4 and download it.
MKV is popular for recording but poorly supported by phones, iMovie, social platforms and many web players. MP4 is the safe delivery format.
OBS Studio records to MKV by default, and many cameras, capture cards and downloads use MKV as well.
If the video inside is already H.264 or HEVC, the tool changes only the container, which takes seconds and keeps every pixel.
The conversion uses ffmpeg compiled to WebAssembly and runs in your tab. Close the page and nothing remains.
Remux gameplay or tutorial recordings to MP4 before editing or uploading.
Convert MKV files so they play in the default video app.
Import footage into editors that do not open MKV.
Create new footage, plan your story or improve your source.
Drop the MKV in, keep Automatic mode and press Convert. Most OBS recordings convert in seconds because the video is copied unchanged.
The first video track and the first audio track are kept in the MP4. Subtitle tracks are not copied.
Not when the MKV contains H.264 or HEVC; the stream is copied. Other codecs are re-encoded at a high-quality setting.
No. The tool runs inside your browser tab with WebAssembly. Your file is read from your device, processed in memory and offered back as a download. EveryGen never receives a copy of it.
Yes. Because the work happens on your own device, there is no processing cost for us to pass on. You do not need to sign in, nothing is added to your file and there is no daily limit.
Files up to 500 MB are accepted. Above about 200 MB the tool warns you first, because browser memory is limited and long, high-resolution videos take longer to process. A desktop browser handles large files better than a phone.
