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How to convert MKV to WEBM?
You can convert MKV to WEBM with MConverter in three easy steps:
Choose MKV files from your device
At the top of this page, drag and drop your MKVs. You can also click to select MKV files using your operating system's file picker. Another method is to press the keyboard shortcut Ctrl+V (⌘+V on Mac) to paste an MKV file you have copied to clipboard. Converting a folder with MKV files to WEBM is also supported: simply paste or drag and drop it.
Click or tap on WEBM from the list of target formats
Alternatively, you can use the search field to quickly find the format you need, whether it's WEBM or something else.
Download your WEBM files, after MConverter has finished processing them
There's an option to automatically download the converted WEBM files, so you don't have to press the download icon for each WEBM. On desktop platforms, you can download the WEBM files to a different folder by clicking on SAVE TO... You may see a share icon as well. Use it to directly share the WEBMs with other apps.
About the formats
Video file formats
MKV files are MatrosKa Video files. Like the Russian Matryoshka doll, which contains multiple smaller dolls nested inside each other, the MKV format can contain multiple video, audio, and subtitle tracks inside a single file. This makes it convenient to have one video with a number of audio and subtitle tracks in different languages, all inside a single playable file.
Video file formats
WebM is a relatively recent video file format for storing high-quality, highly compressed videos with very little quality loss. Because it is also royalty-free, it is frequently used on the web for HTML5 video playback. Its container is based on a Matroska (MKV) profile. It used the VP8 and VP9 technologies for video, and Vorbis and Opus for audio.
Common questions about converting MKV to WEBM
Can I convert MKV to WEBM in bulk?
Yes, MConverter supports batch converting of multiple MKVs to WEBMs simultaneously. You can even drag and drop folders containing MKVs to convert to WEBM. Pasting MKV files and folders copied in the clipboard also works: use Ctrl+V.
Can I convert an MKV file to WEBM, if its size is 1 GB?
Yes, with MConverter Premium you can convert big MKVs, up to 1 gigabyte each. The free version lets you convert files up to 100 MB. If you need to convert MKV files over 100 megabytes, try MConverter Premium.
Is converting MKVs to WEBM safe with MConverter?
Yes, we encrypt your connection using industry standards. Plus, your MKV files are only accessible by you. 4 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your MKVs and other converted files immediately after finishing the conversion by clicking the bin icon. Join others who have trusted us to convert over 4,587,955 files so far.
How long does it take to convert MKV to WEBM?
For most videos, the wait could be a few minutes or less. However, MConverter also supports converting larger videos, meaning that it could take a while (up to over an hour, for example).
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