Convert MKV to MP4

Turn your MKV videos into MP4 in seconds

Convert MKV to MP4 without leaving your web browser

Flixier will help you convert your MKV videos to MP4 quickly and easily. You don’t need to download or install anything. Just click on Get Started, drag your MKV file over, then hit Export. You can even bring files over from your mobile phone or cloud storage! On top of that, Flixier lets you trim and cut your video before converting it, improve the video and audio quality, generate a subtitle, and then share your video to TikTok, Instagram, YouTube, and Facebook all at the same time!

Convert MKV to MP4

Use an online MKV to MP4 converter 

Forget about downloading and installing hundreds of apps. Our online video editor and converter run entirely in your browser. We use our own powerful cloud servers to process your video so the conversion will be handled in minutes rather than hours, without taking over your computer’s resources. You can even tab out of the window; we’ll notify you when we’re done.

Convert your MKV to MP4 easily and quickly 

You don’t need to be a media expert or spend hours watching tutorials to convert your MKV videos with Flixier. We respect your time, so we made our tool intuitive and easy to use. All you need to do is upload your video, add it to the timeline, and click the Export button to save it to your device as an MP4 in seconds.

Cut and trim your videos before converting 

Are there parts of your video that you’d rather cut out? Flixier can help! Our tool is more than a video converter; it’s a full-blown video editor. That means you can easily cut unwanted parts from your MKV video or trim the beginning or the ending before converting it to MP4 and sharing it with the world.

Enhance your video with Flixier 

You can use Flixier to give your video an extra boost. Brighten a dark clip, improve contrast, or make the colors pop just by tweaking a couple of sliders. On top of that, you can also choose from a number of different filters like Sepia, Technicolor, or Black and White to make sure the image matches the vibe you’re going for.

How to convert MKV to MP4:

How to convert MKV to MP4:

Click on Get Started to open Flixier in your browser and then drag your video over to the Import menu, or choose any of the other options listed there to bring it over from cloud storage.


Drag the video to the timeline at the bottom of the screen to start editing it. Use the Cut button to split your video and right-click on the unwanted parts to delete them. Select your video and use the menu on the right side to enhance the image using the menu on the right side of the screen.

Convert and save

When you’re happy with how your MKV looks, click Export in the top right corner, then Export and Download. Your video will be converted to MP4 and saved to your computer in seconds.

Why use Flixier to convert MKV to MP4?

Convert MKV to MP4 on Mac, Windows, and Chromebooks

Since Flixier runs in your browser, it’s compatible with all modern operating systems. It doesn’t matter what brand your computer is, if it can run modern web browsers, it can run Flixier. No need to worry about compatibility anymore!

Resize your video before converting it 

Wanna publish your video to both YouTube and TikTok? Our online video converter lets you resize videos easily. You can crop clips, lower their resolution, or just convert a landscape video to portrait and vice versa, all with just a few clicks.

Convert any format to MP4 

Flixier’s is compatible with all the popular audio and video formats. When you upload a video to Flixier, it gets automatically converted to MP4. This ensures compatibility with as many devices as possible and allows you to play your video back and edit it in the browser.

Combine videos together

Do you have multiple MKV clips you want to combine into a single video? Our video joiner lets you merge them all together regardless of format. You can even add images, text, and new audio tracks. When you’re done, you can save the whole thing together as an MP4.


I’ve been looking for a solution like Flixier for years. Now that my virtual team and I can edit projects together on the cloud with Flixier, it tripled my company’s video output! Super easy to use and unbelievably quick exports.

Steve Mastroianni -

My main criteria for an editor was that the interface is familiar and most importantly that the renders were in the cloud and super fast. Flixier more than delivered in both. I've now been using it daily to edit Facebook videos for my 1M follower page.

Evgeni Kogan

I'm so relieved I found Flixier. I have a YouTube channel with over 700k subscribers and Flixier allows me to collaborate seamlessly with my team, they can work from any device at any time plus, renders are cloud powered and super super fast on any computer.

Anja Winter, Owner, LearnGermanWithAnja

Frequently asked questions.

Frequently Asked Questions

If you have any further questions, Get in touch with our friendly team
If you have any further questions, Get in touch with our friendly team

Is it okay to convert MVK to MP4?

Is it okay to convert MVK to MP4?

There’s nothing wrong with converting an MKV video to MP4. MP4 videos tend to take up less space and are compatible with a broader number of devices, players, and online platforms.

What is the advantage of MKV over MP4?

What is the advantage of MKV over MP4?

MKV can technically offer better video quality than MP4, but with a properly encoded MP4 file, the difference will be negligible enough that you will most likely not be able to tell the difference.

Does converting to MP4 lose quality?

Does converting to MP4 lose quality?

Converting an MKV video to MP4 will technically add some compression, but if you use a solid converter like Flixier, the difference in quality will be so little that it will not be noticeable to most people.

How long does it take to convert MKV to MP4?

Does converting to MP4 lose quality?

How long it takes to convert your video files generally depends on the software you’re using. Flixier uses powerful cloud servers to process and convert your videos, so if you use Flixier, converting your MKV to MP4 should only take anywhere from a few seconds to a couple of minutes.

Does converting to MP4 lose quality?

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