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Easily Convert WEBM Videos to MKV with Simplified

Free Online Video Converter

Download in Seconds

View Upload Formats

Free Forever

Convert Videos Today

No credit card required

Upload, Download, and Start Designing in Just a Few Clicks

Ever spent hours searching online for free video converters? We feel your pain. That's why Simplified's online converter is free to use for as many downloads as you need—forever. Turning your WEBM video files into MKV, and more, takes seconds. Decreasing or increasing video size and keeping high-quality files is simpler than ever.

How to Use the Video Converter

1
Head over to https://app.simplified.com/tools/video-converter and sign in to your account
2
Upload your WEBM video file by dragging it into the converter or by clicking 'Upload Video'.
3
Choose to convert your file to MKV and click 'Download Now'.
4
If you do not have a Simplified account, sign up for a free account to download your video file.
5
Start with Simplified’s Long-Form Writer.
Change WEBM to MKV

Speed up Your Workflow and Streamline Your Day with Fast File Changes

Simplified's easy-to-use video converter tool adjusts WEBM to MKV in the blink of an eye so projects and approval workflows can keep up the pace. Stopping your flow to convert video files can feel like a waste of time (especially for long videos). We are the one-stop shop for fast and free file conversions. You'll never need another video tool again!

The Free, All-in-One App for Your Entire Team—Anywhere, Anytime

Need instant video conversions for your marketing strategy to work? Our video converter instantly prepares videos for your posts, stories, ads, invites, and much more. Now anyone on your team can create smaller, easier to upload file sizes on any device. Once you download your video, head back to your dashboard to collaborate and design with your team in real-time.

Do More, Learn More With Simplified

Simplified blog is a great place to learn from the best in Instagram marketing. Whether you want to bulk up on social media knowledge or get your first followers.

Frequently Asked Questions

Why should I convert WEBM to MKV?

The main reason to change a video file to a different format is to have better compatibility options online and to create smaller file sizes for viewing and sending to others.

How do I get started using the Video Editor?

Getting started using Simplified's video editor is super easy. You can sign up for a free forever account or choose from one of our many pricing plans. Once you've signed in, select 'Create Videos', and choose from a variety of video formats and templates. Or, if you want to create your video from scratch, simply select the 'Custom Size' option, start designing using our media assets, or upload your own!

How can I make professional-looking videos if I'm a beginner?

Simplified was made to empower all creators with simple tools to create amazing stuff.
Whether you're a beginner or an expert video creator, our platform gives you access to thousands of templates and a library of media assets like royalty-free videos, photos, graphics, GIFs, fonts, and more, to help you get started creating at any time and any level. Plus, our intuitive video editing features give creators the ability to trim, splice, or cut videos with ease. No experience required!

Can I use Simplified's video editor on my mobile device?

Yes. You can use Simplified from your phone or tablet through our website Simplified.com. Our mobile app should launch any day now, so stay tuned!

What is your refund policy?

We offer a Free Forever plan where our users can try Simplified's basic functionalities and make an informed decision. We do not offer refunds. If you're unsatisfied with your plan or need to change it, you can downgrade your plan or pause your subscription to avoid future charges. To learn more about our refund policy, click here.

High-Quality Video Conversions are Just a Click Away

Join the founders, freelancers, and teams already building their brands on Simplified.

Sign Up and Start Today

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What Our 1 million+ Users Say About Simplified

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Aman Patel

Sunday

One of the best collaborative design platform

I guess, there are so many reasons I like Simplified. Here I will mention some of those:

*Professional templates and rich libraries

*It also comes with an AI writer for copies and long-form content

*Comes with a Social Media Scheduler as well

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Eric Strickland

Saturday

Graphic Designer and Funnel Designer

I love to use Simplified! I use it every day its my goto app for design and copy and marketing! Super amazing App

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Amanda Weston

Thursday

AI Content Creator

I love it! The simplicity of writing and designing in one app 🎉 Makes social media marketing a breeze ❤️

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Chekesha Crippen

Wednesday

SIMPLIFIED a Unique highly effective all in one app!

I like best that there are many features and explainer videos for each element you use. You have tons of different ways, and the name speaks for itself. SIMPLIFIED because it is straightforward and has everything in 1 software you could ever need.

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Damon Chen

Sunday

Founder of testimonial.to

I will not renew my Canva subscription next year. Simplified will be my go-to design app! ✌️

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Hoang Phan

Friday

Simplified is a loveable app

And I can confirm that from the moment I logged in. Simplified offer a nicely Dashboard with rich content, including links to various handy templates, and set up fundamental things I need to create great content.When I digged deep into the app, it is an amazing experiences.

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Dawn Veltri

Thursday

Director of Marketing @ RAEK

The magic resize looks pretty amazing. Resizing on other design platforms isn't intuitive and requires quite a bit of rework. Well done and congrats on the launch!

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Mary Grace Gargar

Tuesday

Best ever!

I like all its features, from making a banner, creating content to generating corresponding and accurate hashtags.

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winner shoniran

Monday

How Simplified Saved My Small Business

The AI writer, the brand assets where you can add brand colors. I adore the templates, they're very interactive and so customizable I love it!

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javier21

Saturday

Great UI and make design easier. A time saver.

Im a photoshop user for over 10 years, first time trying out this tool, instantly hook me in, really easy to use and ability create different sized images, is really huge plus point. The tool UI is really interactive, you can pick up right away.

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Ram Narayanan

Fryday

Like the name the Software also very SIMPLE to use

Simple aspects of good content panels, including links to many valuable templates to create great content. It was a wonderful experience when I entered the program.

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Annette Yeo

Wednesday

Simplified is Awesome!

Well to quickly sum up if you are into design, social media advertising, writing blogs and so much more this program is for you. I am honestly stunned as to what it offers, too much to list here. Its great.

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SomoSurfing

Tuesday

Best Investment ever!

Social share images are an important part of building reader engagement. The better the quality, the longer your visitor is spending there, the more likely to reach out for any kind of "call to action", including purchasing.

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