MOV to MKV Converter
Convert MOV to MKV online for free: nothing to install, no watermark, files encrypted in transit and deleted automatically after conversion.
Advanced options
Drag & drop your MOV file here, or
How to convert MOV to MKV in 3 steps
- 1
Upload your MOV file
Drag and drop or select the MOV file you want to convert.
- 2
Choose MKV as output
The output format is pre-selected for you — just confirm and start the conversion.
- 3
Download your file
Once processing finishes, download your converted MKV file instantly.
MOV vs MKV: what is the difference?
| MOV | MKV | |
|---|---|---|
| Full name | QuickTime File Format | Matroska Video |
| Type | Video container | Video container |
| Compression | Depends on the codec | Depends on the codec |
| Developed by | Apple | Matroska.org |
| File extension | .mov | .mkv |
What is MOV?
MOV is Apple's QuickTime container, the default format for iPhone recordings and Final Cut Pro exports. It supports high-quality codecs such as ProRes and HEVC, but outside the Apple ecosystem it is less universally supported than MP4.
What is MKV?
MKV (Matroska) is an open, royalty-free container that can hold any number of video, audio and subtitle tracks plus chapters in a single file. It is popular for films and archives, but many phones, TVs and editors do not open it natively.
Tips for converting MOV to MKV
- Check the length and resolution of your MOV file first: long 4K videos take several minutes to process and may exceed the 50MB free limit.
- If you only need the soundtrack, pick an audio format such as MP3 instead of MKV — the file will be much smaller.
- Keep the original video until you have checked the converted file plays correctly on the device you want to use.
- Subtitles and extra audio tracks are not always carried over between containers, so check them after converting.
Frequently asked questions
- How do I convert MOV to MKV online?
- Upload your MOV file above, select MKV as the output format, and click Convert. ConvertFastHub processes the file in the cloud and gives you a download link — no software installation required.
- Is it free to convert MOV to MKV?
- Yes. Free accounts get 10 conversions every 24 hours with files up to 50MB. For unlimited conversions, larger files up to 1.5GB, and priority processing, upgrade to ConvertFastHub Pro.
- Is my file safe when I convert it?
- Files travel over an encrypted connection, are scanned automatically for malware (files up to 200 MB), are processed in an isolated worker and are deleted automatically: after 1 hour without an account, 24 hours with a free account, or 7 days with Pro.
- Can I convert MOV to MKV on my phone?
- Yes. The converter runs in the browser and the work happens on our servers, so it works the same on Android, iPhone, tablets and computers — there is no app to install.
- Do I need an account?
- No. You can convert without signing up; results are then kept for 1 hour. A free account keeps them for 24 hours and shows your conversion history.