MKV to MP4 Converter - Free, Universal Compatibility
MKV can hold almost any video/audio codec, which is powerful but means many phones, smart TVs, and platforms cannot play it. Converting to MP4 guarantees it plays everywhere.
How to use MKV → MP4
- 1Drag and drop your file, or click to select it.
- 2Click Convert to run MKV → MP4.
- 3Download the result - your file is deleted automatically within 24 hours.
Drag & drop a file here, or click to browse
Your file is only processed temporarily for the conversion and is automatically deleted within 24 hours.
Frequently Asked Questions
Does this re-encode my video?
Yes - MKV can contain many different codecs, so this always re-encodes to H.264 video and AAC audio to guarantee the output MP4 is actually playable.
Why doesn't my MKV play on my TV or phone?
MKV is a flexible container that accepts almost any codec, so many devices and apps that only support the more standardized MP4 format cannot open it.