Convert MKV to MP4 Online Free

Quickly change format MKV to MP4 in seconds with our online converter. It’s 100% free, lightning-fast, and requires no sign-up or installation.

How to Change MKV to MP4 Format Using UniConverter

Step 1

Import MKV Files

Drop your MKV file in with a drag, or click the “+” to pick it from your device. It's a complete online process, hence no unnecessary time consumption in installing any software.

Step 2

Choose MP4 as Output Format

Choose MP4 format from the drop down menu. If you have multiple MKVs to convert, use the desktop version of UniConverter. It offers batch conversions for all MKVs in a single run.

Step 3

Download MP4 Video

The moment your MKV to MP4 conversion ends, the MP4 is ready to download—instantly accessible for whatever you have planned next.

MKV and MP4 File Formats Explained

	MKV	MP4
File Extension	.mkv	.mp4
Full Name	Matroska Video File	MPEG-4 Part 14 File
Description	The MKV format stands out as an open-standard container. It has the capability to store vast video, audio, subtitles, and metadata through its codec support system that helps in maintaining the premium quality of the video.	MP4 is the most widely adopted multimedia format. It efficiently stores videos, audio, and still images together. The MP4 format is widely used for streaming, downloading and social media sharing. Its compression technology balances reduced file size with sharp quality.
Associated Programs	VLC Media Player, KMPlayer, Media Player Classic, DivX Player, PotPlayer, Plex	VLC Media Player, Windows Media Player, QuickTime Player, RealPlayer, iTunes, Plex
Initial Release	2002	2001
Developer	Matroska Organization	Moving Picture Experts Group (MPEG)
Common Use Cases	High-quality HD film storage, Blu-ray rip preservation, or keeping videos with layered audio tracks and subtitle data	Streaming videos seamlessly on YouTube, Facebook, and Instagram, sharing effortlessly across mobile devices, distributing online while keeping file sizes small
MIME Type	video/x-matroska	video/mp4

Key Features of UniConverter MKV to MP4 Converter

UniConverter free MKV to MP4 converter offers fast, instant and batch processing with impeccable results.

Lightning Fast – Convert MKV in Seconds

UniConverter Matroska to MP4 converter free taps into GPU acceleration and optimised encoding workflows to push conversions through in record time. Quick social clips are done in seconds, while large HD or UHD files are processed without dragging. The tool handles both single files and massive libraries with equal ease, ensuring steady performance every time.

Premium Quality Conversion

Worried if the quality drops out after a conversion? UniConverter MKV to MP4 video converter is designed to safeguard the full sharpness and vibrancy of your videos. High-definition shots keep their clarity, colours remain vivid, and audio stays rich and crisp. Whether it’s dynamic HD footage or stunning 4K scenes, the finished MP4 files mirror the original MKV so well that the difference is negligible.

Convert MKV Format to MP4 Online & PC

UniConverter isn’t tied to one setup—it works just as well in your browser as it does on your desktop app. Whether you’re travelling with just a laptop or editing from a home workstation, the performance stays consistently quick. Its clean, straightforward design and broad format compatibility mean anyone—first-time user or seasoned editor—can get started instantly, without a steep learning curve.

Batch MKV Format to MP4 Conversion

No more slow, one-by-one format MKV to MP4 conversion. UniConverter's batch mode lets you drop in dozens, or even hundreds, of videos, set your preferences, and let the tool do all the work. Just load your list, hit start, and let it run while you focus on other tasks.

Supports 1000+ Formats

Apart from changing MKV into MP4, UniConverter lets you convert videos, audio, and images across more than 1000 formats without breaking a sweat. From popular file types to rare and specialized ones, it ensures flawless compatibility for editing, sharing, or playback. No need to worry about codecs or conversions—just pick your format and get high-quality results every time.

More than a MKV to MP4 Format Converter

Uniconverter is more than just a MKV to MP4 video converter. It gives you access to file compression, advanced editing, screen recording, downloading, merging and lots more. It is an all-in-one solution for all your visual needs. This multimedia processing tool delivers professional quality results which can be handled by the new users as well.

Batch Convert Now

FAQs about MKV to MP4 Format Converter

How do I change MKV into MP4?

By using UniConverter’s free online tool, you can turn MKV files into MP4 inseconds. You just have to simply upload your video, choose MP4 as the format, and hit convert. Whether it’s a single clip or your whole video library, you’ll receive the same crisp quality from start to finish.

How do I convert MKV to MP4 using VLC?

Open VLC, go to Media, then Convert/Save. Next, upload the MKV file you want to convert, then click Convert/Save again. From the Profile menu, choose MP4 as your format and hit Start. In just a few seconds, you’ll have your MP4 file ready.

How to convert Matroska to MP4 for free?

UniConverter is a free online MKV to MP4 converter. It offers hassle-free conversions, ad-free. Just upload your MKV, select MP4, and convert swiftly. No subscription needed.

What is the best MKV format to MP4 converter?

Picking the best MKV to MP4 converter solely depends on what you need. If you want a simple, free option, VLC is all you need. But if you wish to have faster batch conversions, with features like editing and quality supremacy, then Wondershare UniConverter’s online tool is the smarter choice.

Why do you convert MKV to MP4 format?

Most people prefer to convert MKV to MP4 because MP4 is the preferred format for smartphones, TVs, and online platforms alike. Switching MKV to MP4 boosts compatibility with a vast array of devices, speeds up streaming, and reduces file sizes.

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“Wondershare UniConverter has completely exceeded my expectations! The software is incredibly fast, easy to use, and supports a wide range of file formats. I was able to convert large videos in just minutes without losing quality. The interface is clean and intuitive, making it beginner-friendly while still offering advanced features for power users. ”

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