Convert MKV to MP4 Free Online

Free MKV to MP4 video converter. Stream MKV on any device by remuxing or transcoding to MP4. No signup. UK platform.

How It Works

Convert MKV (Matroska) videos to MP4 with H.264 video and AAC audio. Works on phones, smart TVs, browsers — universal playback. Free, no signup.

FreeNo signup needed

InstantResults in seconds

SecureFiles auto-deleted

Soft subtitles are extracted to a sidecar SRT file. Hard-coded subs are preserved.

Remuxes if the source streams are already H.264/AAC. Otherwise transcodes — slower but compatible.

Yes — completely free, no signup needed.

Free up to 100MB. Pro 500MB. Elite 1GB.