2023 | How to Convert MKV to WEBM on Windows/Mac/Online

The task to convert MKV to WebM videos is accessible, but only if you have a suitable converter. Any of these four MKV to WebM converters will assist you impressively. Don't waste your time; select one and start converting your videos!

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Sofia Albert

Updated on Aug 22, 2023

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MKV is a multimedia container format, while WebM is a royalty-free media format. MKV is a lossless format, so it takes more storage space. Moreover, some of its codecs are not supported by media players and social streaming. On the other hand, WebM is a lossy codec, so it is mainly preferred for storing videos. Streaming sites and browsers always support WebM file format. If you need to upload videos on the internet, it's wise to convert MKV to WebM videos.

There is a requirement of an MKV to WebM converter for carrying out your conversion function. Let us explore the below ways for your devices, i.e., Windows, Mac, and Online!

Related Article>> Convert MKV to MP4

Convert MKV to WebM on Windows 10

After exploring many Windows converters, top converters are provided for you!

1. EaseUS Video Converter

EaseUS Video Converter is the leading Windows media converter that assists in performing the task efficiently. It converts your videos to 500+ video formats, including MKV to WebM conversion. The impressive thing is providing you with faster conversion speed. Plus, it does not compromise the output file quality.

You can do conversion of multiple files at a time via its batch conversion feature. Also, merging several videos into a single file is at your fingertips. You can then preview your videos before finalizing your conversion with a built-in media player.

The MKV to WebM converter allows you to change files' frame rate, channel, and bitrate as per your demands.


  • Convert videos/audio files flawlessly
  • Offer resolution i.e., 1080p, 720p, etc.
  • Extract audio from the video files
  • Best free video converter on PC

Now, download this Windows converting software!

How to convert MKV files to WebM:

Step 1. Download EaseUS Video Converter. Open it and select "Video Converter" from the three options. Then, hit "Choose Files". You can import the file from the computer. 

choose video converter

Step 2. When you see the listed video in this tool, hit "Settings" > "WEBM". At the same time, choose the desired Quality and Resolution. If you are going to apply more options, choose "Edit". 

To change the saving path, hit "Save to". Now, you can start your mission by clicking "Convert All".

video webm format

Step 3. After a while, you are supposed to find the converted file from "Finished". Meanwhile, to play, delete, and rename this file, you can right click it to choose the related function. 

output webm

2. Miro Video Converter

Miro Video Converter is a free software to convert videos to the required formats. The supported formats include WebM, MP4, MP3, and OGG. You can convert files for various devices like iPad, iPhone, and Android. If you don't have much time for conversion, then the batch conversion feature should be your way to go. 

You can drag & drop files for easy importing. The option for video compression to reduce the file size is available. You will get good output file quality at average speed. Moreover, creating thumbnails and adjusting the aspect ratio is allowed.

miro video converter

How to convert MKV video to WebM with Miro Video Converter:

Step 1. After downloading and installing, open this software on Windows. Drag your MKV file in the specific section.

Step 2. Next, click "Format" and then hit "Video." You will see two options for WebM as "WebM HD" and "WebM SD". Select the first one (WebM HD). Adjust the settings if you require so.

Step 3. In the end, press the "Convert to WebM HD" button. You are all done!

Convert MKV to WebM on Mac

There are few suitable Mac converters in the market, but the below one is an excellent option to try.


HandBrake is an open source video converter that works amazingly for converting your files. It allows conversion to many formats, and several advanced presets, including MKV to WebM. High-quality conversion at a faster rate in a straightforward way is what this converter is offering you.

Moreover, you can use the batch conversion feature for converting several files at once. Also, it is equipped with a media player that offers live and static previewing of your videos before conversion. Besides conversion, editing is also possible.

Handbrake converter on mac

Here is the procedure to convert MKV video to WebM via HandBrake:

Step 1. The first step is to download and install the software on Mac. Open the software, and click "Open Source". Import your MKV video file.

Step 2. Select "WebM" as the output format from the "Format" drop-down menu. Choose the destination folder by pressing the "Browse" tab in the down-right corner.

Step 3. The last thing is to click "Add" > "Queue" > "Start". Get your WebM file in the desired folder.

Convert MKV to WebM Online

The below recommendation can be helpful when you are looking for a browser-based tool.

Video Converter

Video Converter is the best option to try because it can convert MKV to WebM videos at a low cost. Over 400 file formats are supported, including MKV and WebM. You can also import the files from Google Drive or Dropbox. 

As the converted files are under powerful servers, the fast conversion is what you will get in the end. However, one factor that affects the conversion speed is the internet connection.

Moreover, this reliable tool provides you with the Google Chrome Extension to enhance accessibility. 

videoconverter for mkv to webm

Look at converting MKV to WebM through Video Converter:

Step 1. Open the Video Converter website on your device. Click "Add your Media", browse, and open the MKV video.

Step 2. Next is to choose the output format as "WebM" from the drop-down menu by clicking "MP4". You can also change the settings in this step. Lastly, press the "Convert" button and then hit "Download" to get your converted file.


Not all people have the same device. That's why we have explored many and chosen the four best converters for Windows, Mac, and Online users. No doubt, EaseUS Video Converter is up-to-mark software with extensive features, but it's up to you to pick one that is based on your demands.

To make the selection process easier, all the details of each MKV to WebM converter have been provided. Even the tutorials are also there, so you won't face any difficulty during conversion.

EaseUS VideoKit

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