Convert images, documents, video and audio in your browser. Your files stay on your device.
MKV won’t open where you need it? Convert it to MOV without uploading it: even large files work, because everything happens locally.
Drag one or more MKV files onto the dashed area, or tap it to pick them from your device.
MOV is already selected. If you want, open the options to trim the video or change its resolution or quality.
Press “Convert to MOV”. When it’s done, download the files one by one or all together in a ZIP archive.
Good to know. If the video is already compatible with the chosen format it’s copied without re-encoding: the conversion is very fast and the quality identical.
Source format
Matroska Video
An open, flexible container that accepts almost any codec, several audio tracks and subtitles. It’s loved for films and series, but TVs, iPhones and some editors can’t read it.
Target format
QuickTime Movie (Apple)
Apple’s video format, used by iPhone, Mac and Final Cut. Technically it’s MP4’s big brother, but some programs and websites on Windows and Android struggle with it, especially when it contains HEVC video.
Audio and video use WebCodecs: they work in up-to-date Chrome, Edge, Opera and Samsung Internet, in Firefox 130+ and Safari 17+ (with a few limits on the formats they can create). If your browser can’t create the chosen format, we tell you before you start.
No. The conversion from MKV to MOV happens entirely in your browser, using your device’s computing power. Files aren’t sent or stored anywhere: when you close the page they’re gone from memory too.
Up to 100 files at a time. There’s no fixed size limit: it depends on your device’s memory. On smartphones it’s best to work in smaller batches with heavy files such as videos.
Yes, with up-to-date Safari, Chrome, Firefox, Edge and Samsung Internet. On phones, converted files end up in the Downloads folder or the Files app.
Only to open the page (and, the first time, to download the components needed for that type of file). After that the conversion keeps working even if the connection drops.