Convert MKV to MP4
Free, fast and secure — convert MKV to MP4 right in your browser.
Convert MKV to MP4 for wider compatibility
Converting MKV to MP4 gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when MKV will not play nicely everywhere.
How to convert MKV to MP4
- 1 Drop your MKV file into the converter above.
- 2 It is converted to MP4 automatically — no settings to fiddle with.
- 3 Download your new MP4 file instantly.
MKV vs MP4
| Feature | MKV | MP4 |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | Yes | Yes |
| MIME type | video/x-matroska | video/mp4 |
| Best for | Archiving high-quality video with multiple tracks — converted to MP4 for everyday playback. | Sharing, streaming and uploading video anywhere with maximum compatibility. |
About the formats
Matroska video
MKV (Matroska) is a flexible open container that can bundle many video, audio and subtitle tracks in one file. It is popular for high-quality archives and media libraries.
Strengths
- Holds multiple audio/subtitle tracks
- Open and future-proof
- Great for high-quality storage
Limitations
- Not supported on many phones/browsers
- Often needs converting to play
- Larger than streaming formats
Best for: Archiving high-quality video with multiple tracks — converted to MP4 for everyday playback.
MP4 video
MP4 (H.264) is the universal video container. It balances quality and file size beautifully and plays on virtually every device, browser and platform.
Strengths
- Plays almost everywhere
- Great quality-to-size ratio
- Ideal for streaming and social media
Limitations
- Lossy compression
- Less flexible than MKV for multiple tracks
- Older codecs can look dated
Best for: Sharing, streaming and uploading video anywhere with maximum compatibility.