MKV
Matroska video
MKV (Matroska) is a flexible open container that can hold many video, audio and subtitle tracks. It is popular for films and recordings, but phones, TVs and editors don't always play it.
Extensions: .mkv
MKV to MP4 converter
Convert MKV files to MP4 on Windows 10 and 11: free, offline and in batches. Drag the files onto MP4 in Filee's format donut and the MP4 files appear next to the originals.
How to convert MKV to MP4 on Windows
- 1
Select your MKV files
In File Explorer or on the desktop, select one MKV file or as many as you like. The first time, Filee offers to download FFmpeg, the free engine it uses for this conversion.
- 2
Hold Ctrl and drag
Hold Ctrl (or the key you set in Filee) and drag the files. A donut of formats opens at the cursor. Prefer menus? Right-click and choose Convert with Filee.
- 3
Drop on MP4
Release the files over MP4. A progress ring counts up, and each MP4 file is saved next to its original.
What Filee does for MKV → MP4
MKV recordings, for example from OBS, often won't import into video editors or play on TVs, while MP4 is accepted almost everywhere. The conversion runs locally, so long recordings never have to be uploaded.
- Uses FFmpeg, a free optional engine that Filee downloads once into its own folder (about 100 MB). Programs installed on your PC are never used.
- The MP4 720p preset shrinks large videos for sharing.
- Batch: one file or hundreds, converted in parallel; a failure never stops the rest.
- Private: files are converted on your PC and never uploaded, even without internet.
- Saved next to the original, or in a folder and with a file name pattern you choose.
MKV can also become
- WEBM
- MOV
- AVI
- GIF
- MP3
- M4A
About MKV and MP4
MP4
MPEG-4 video
MP4 (MPEG-4 Part 14) is the most compatible video format. It plays on phones, TVs, browsers and every video site, usually with H.264 or H.265 video and AAC audio.
Extensions: .mp4 .m4v
Convert MKV to MP4 for free
Filee is a free, open-source file converter for Windows 10 and 11. It works offline and converts 180+ formats with one drag and drop.
Download for Windows