MOV to MKV Converter
Convert MOV to MKV using your browser's own media codecs — no upload, no watermark, no size limit. Drop a MOV file below — the whole conversion runs on your device.
Drop files, or click to browse
MOV files only — processed one at a time
Frequently asked questions
Is this MOV to MKV converter free?+
Yes, with no watermark and no account. The engine runs locally in your browser, so there's no server queue limiting usage.
Is my video uploaded to a server?+
No. Orbfile uses your browser's own built-in media codecs (via the WebCodecs API and Mediabunny), so encoding happens entirely on your device.
How long will it take?+
It depends on your device and the video's length and resolution — expect roughly real-time to a few times real-time for typical clips.
Is there a maximum file size?+
There's no fixed upload limit — since everything runs on your device, the practical limit is your browser's available memory, which handles typical clips and even fairly long recordings without issue.
How do I convert MOV to MKV?+
Drop your MOV file into the box above — Orbfile re-encodes it to MKV using your browser's own codecs and gives you a download link when it's done.
About MOV and MKV
What is MOV?
MOV is Apple's QuickTime container format — it's what iPhones record video into by default.
Full MOV format guide →What is MKV?
MKV (Matroska) is a flexible open container that can hold multiple audio tracks, subtitles, and chapters alongside the video.
Full MKV format guide →MOV and MKV solve different problems. MOV is great for editing in Final Cut Pro or iMovie, but MKV pulls ahead when you need supports multiple audio/subtitle tracks in one file. If that's the situation you're in, converting is worth it.
How it works
- 1
Drop your file in
Drag your video onto the box above, or click it to browse — there's no account to create and no upload to wait on.
- 2
Pick your settings
The output format is already set for this page — just adjust any extra options shown, if there are any.
- 3
Download the result
Your browser processes everything locally and hands you a download link the moment it's done — nothing was ever sent to a server.
Is it private?
Everything happens locally, inside this browser tab. Your video is read from disk, processed with WebAssembly running on your own device, and handed back to you as a download — it's never transmitted anywhere, so there's nothing to intercept and nothing stored on a server.
Common use cases
- Archiving video with multiple language tracks or subtitles
- Uploading a clip to social media
- Sending a video over email or chat
- Freeing up storage on a phone or laptop
Supported formats
This is one of many pairings the video toolkit handles. In total it covers:
Related conversions
Format details
About MOV files+
MOV is Apple's QuickTime container format — it's what iPhones record video into by default.
MOV was built by Apple as the native container for QuickTime back in the early 1990s, well before MP4 existed — in fact, the ISO base media format that MP4 is built on borrows heavily from QuickTime's original design. Today it's mainly notable as the format iPhones record video into and the format Final Cut Pro and other Apple editing tools favor, including support for high-end codecs like ProRes that MP4 doesn't typically carry.
How to open a MOV file
Opens readily in QuickTime Player, Most modern browsers and media players. For real editing, use Final Cut Pro, Adobe Premiere Pro, iMovie.
Good for
- native to Apple's camera and editing apps
- supports high-quality codecs like ProRes
Watch out for
- some non-Apple platforms and older editors handle it inconsistently
About MKV files+
MKV (Matroska) is a flexible open container that can hold multiple audio tracks, subtitles, and chapters alongside the video.
Matroska was designed from the ground up as an open, extensible container, meaning a single MKV file can bundle several audio tracks (say, multiple languages), several subtitle tracks, and chapter markers, all switchable during playback — something older containers like AVI and even MP4 handle less gracefully. That flexibility made it the format of choice for archiving TV shows and films with multiple language options, though a handful of phones and streaming devices still expect MP4 and need MKV converted first.
How to open a MKV file
Opens readily in VLC Media Player. For real editing, use DaVinci Resolve, Adobe Premiere Pro (with an extension).
Good for
- supports multiple audio/subtitle tracks in one file
- open format, no licensing fees
Watch out for
- not natively supported by some phones and TVs without an app
Need a different format? Try the full Video Converter, or explore all video tools.