FREE VIDEO TOOL
MKV to MP4 Converter
Convert MKV videos to MP4. Tries a fast, lossless remux first and only re-encodes when a file actually needs it.
Drop your MKV video here
Multiple files supported
Why Use Our MKV to MP4 Converter?
Fast Lossless Remux First
Most MKV files already contain H.264 or HEVC video and AAC audio. For those, the streams are repackaged into MP4 in seconds with zero quality loss.
Automatic Re-encode Fallback
If a file's codec can't be remuxed directly, it's automatically re-encoded with H.264 and AAC instead, so the conversion still finishes.
Batch Convert Multiple Files
Drop in as many MKV files as you need and convert them one after another.
100% Private
Your videos are never uploaded anywhere. Conversion runs locally in your browser.
Frequently Asked Questions
Is my video uploaded to a server?
No. Conversion runs entirely in your browser.
Will converting reduce my video's quality?
Usually not. Most MKV files are remuxed (repackaged into MP4 with no re-encoding), which is lossless. Only files that can't be remuxed are re-encoded.
Why convert MKV to MP4?
MKV isn't supported by some phones, browsers, and editing software. MP4 plays virtually everywhere.
Is this tool free?
Yes. It's free to use with no sign-up.
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