Convert MKV to MP4, Free Online Converter
Convert MKV files that won't open on your TV or smartphone into MP4, so you can play and share them anywhere.
Drag and drop your MKV file here, or click to upload
MKV files supported
How Do MKV and MP4 Differ?
MKV offers many features but has limited device compatibility
MKV files can contain subtitles, multiple audio tracks, and more in a single file, making them popular for movies and TV series. However, they often cannot be played directly on smart TVs or smartphones.
MP4 opens instantly on almost all devices
MP4 is a universally supported format across almost all environments, including smart TVs, iPhones, Android phones, Windows, and Mac. It plays without needing a separate app.
If a downloaded video shows 'unsupported format' on your smart TV or won't open on your smartphone, converting it to MP4 will solve the problem. MP4 is also the most reliable format for playing videos from a USB on your TV or sending them via messenger.
Your video is not sent externally
The entire conversion process is handled in your browser. Your file is never sent anywhere, so you can rest assured about any video.
Ultra-Fast Conversion
MKV and MP4 often have similar structures, meaning only the container format needs to be changed. This allows for rapid conversion.
Completely Free. No Limits.
There are no limits on the number of conversions or file size.
Maintain Original Quality
Converts the format while preserving the original quality.
FAQ
What happens to subtitles inside an MKV file?
If subtitles are included as a separate track in MKV, they may not be transferred as MP4 does not support them. Hardcoded subtitles (burned into the video) will remain.
What happens to MKV files with multiple audio tracks?
The default audio track is automatically selected and included in the MP4. If there are multiple audio tracks (e.g., English, Spanish), the first track will be used.
Will converting an MKV that won't open on my smart TV to MP4 solve the issue?
Yes, most smart TVs natively support MP4. After conversion, you can play it directly from a USB drive.
Can I play it on an iPhone?
Yes, the converted MP4 will play on all Apple devices, including iPhone, iPad, and Apple TV. While MKV cannot be opened with default apps, MP4 works without issues.
How long does the conversion take?
Most conversions finish in a few seconds. If a full re-encoding is required, it may take a few minutes depending on the file size.
Turn your videos into Shorts
Our AI automatically cuts out interesting parts and turns them into Shorts.