Convert MKV to MP4
Convert MKV video files to MP4 format in your browser. Fast, free, and completely private — no files are uploaded to any server.
Drop files here or click to browse
Max 10240.0 MB per file · drop multiple for batch
100% private — files never leave your device
·Free — no sign up, no watermark
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How to Use Convert MKV to MP4
- Upload your MKV file by dragging it in or clicking to browse
- MP4 is pre-selected as the output format
- Click Process to start the conversion
- Download the universally compatible MP4 file
Features
- Convert MKV (Matroska) to universally compatible MP4
- Preserves all video and audio tracks
- Works offline — runs entirely in your browser
- Free with no watermark or sign-up required
Frequently Asked Questions
- Why convert MKV to MP4?
- MP4 is the most widely supported video format. While MKV is great for storing multiple tracks, MP4 works everywhere — phones, social media, video players, and web browsers.
- Is the conversion fast?
- Yes. For compatible codecs (H.264/AAC), the converter uses stream copy which is nearly instant. Re-encoding is only needed when changing quality settings.
- Will subtitles be preserved?
- MP4 has limited subtitle support compared to MKV. Embedded subtitle tracks may not carry over. For subtitles, consider using our Auto Subtitles tool to burn them into the video.