MKV to MOV converter

QuickTime and Apple editing apps do not open MKV; MOV brings OBS recordings and downloads into an Apple workflow.

Drop a MKV file hereThe converter loads in your browser.

What happens to your MKV

H.264/HEVC video is copied into MOV; AAC/MP3 audio is copied and other audio (Opus, Vorbis, FLAC, DTS) is converted to AAC.

Tip: Styled MKV subtitles can be kept as MP4-style timed text when "Keep subtitles" is ticked in Advanced.

How to convert MKV to MOV

  1. Drop your MKV file on the box above, or tap it to pick one. The engine (about 31 MB) loads once per visit.
  2. The converter reads the file's streams and shows which codecs are inside.
  3. Keep the defaults, or pick a quality and resolution.
  4. Press the button, wait for the progress bar, then download your MOV.

Prefer the command line?

This is the FFmpeg command the converter runs for a typical MKV (h264 + aac). Paste it into a terminal with FFmpeg installed for batch jobs or files too big for a browser tab:

ffmpeg -y -i input.mkv -map 0:v:0 -map "0:a:0?" -sn -dn -c:v copy -c:a copy -movflags +faststart output.mov

Streams are copied (-c copy), so this runs at disk speed. Your own file may contain different codecs; the converter above detects them and adapts. For other jobs, ask the FFmpeg command helper.

Questions

Is it lossless?

The video stream is, when it is H.264 or HEVC. Only incompatible audio is re-encoded.

Is my MKV file uploaded?

No. The MKV is read from your device by FFmpeg running as WebAssembly in the page, and the MOV is written back to your device. No server ever receives it.

Is there a size limit for MKV to MOV?

We set none. The practical limit is browser memory: roughly 2 GB of output on a computer, and much less on phones.