Convert MKV to WEBM Files Online for Free.
Free online tool to convert mkv to webm files quickly and securely. No installation required – start converting your files in just a few clicks!
Drag and drop your files here or click to upload.
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Maximum file size is 10MB
How It Works
How to Convert MKV to WEBM
Click inside the file drop area to upload your MKV file or drag & drop it.
Select WEBM as the output format and click the 'Convert' button.
Download the converted WEBM file instantly after conversion.
You can also send a link to the converted file via email. (Optional)
Convert Your MKV files to other formats
RunConvert.com can convert your MKV files to these other formats:
Convert Your MKV files to other formats
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Frequently Asked Questions
Here are some common questions and answers about mkv file conversions ask by our users on RunConvert.com.
Frequently Asked Questions
Q: Can I use RunConvert for wedding videos?
A: Of course—whether it’s for sharing, archiving, or surprising your spouse with a highlight reel, we’ve got you.
Q: Does RunConvert support videos from iMovie?
A: Yep—just export from iMovie and upload the file here. It’s smooth sailing from there.
Q: What if I need subtitles added during conversion?
A: Currently, we don’t embed subtitles—but you can add them later using a subtitle editor.
Q: Can I convert old camcorder footage?
A: Absolutely—those nostalgic AVI files? We’re great at modernizing them into MP4s you can actually watch.
Q: Can I add watermarks or text to videos?
A: Not at the moment. RunConvert is all about clean, simple conversions—but we might add that later.
Q: Do you support VP9 or AV1 codecs?
A: Yep! These modern codecs are supported for users who know their stuff and want max compression without quality loss.
Q: Is there a size limit for uploads?
A: Yes, but it’s pretty generous. We’re optimized for quick, efficient conversions—not full-length movies (yet!).
Q: Does converting protect against file corruption?
A: Not really, but converting a glitchy format to a stable one like MP4 can help with playback issues.
Q: How do I convert a corrupted video file?
A: We can’t fix broken files (yet), but if it’s playable, we can usually convert it.
Q: Can RunConvert fix out-of-sync audio?
A: We don’t fix sync issues, but converting might help if the original format was buggy.
What is MKV (Matroska Video)?
MKV (Matroska Video) is an open-source container format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is designed to be flexible and is often used for high-definition video content.
MKV is a popular choice for storing HD movies, TV shows, and videos due to its ability to support almost any type of video and audio codec, as well as multiple audio tracks and subtitles within one file.
How to open MKV?
MKV files can be opened with several media players, including VLC Media Player, PotPlayer, and Media Player Classic (MPC-HC).
For macOS users, VLC and IINA are great options to play MKV files. You can also use the official Elmedia Player for MKV playback.
MKV is Developed by: Matroska Association
MKV was Released on: 2003
Useful Links for MKV:
How to convert MKV?
You can easily convert MKV files to other formats like MP4, AVI, or MOV using our online video converter. Simply upload the MKV file, select your desired output format, and start the conversion process.
Our tool ensures quick and high-quality conversion, making MKV files compatible with a variety of devices and platforms.
What is WEBM?
WEBM is an open, royalty-free video format designed for the web. It is based on the VP8 video codec and the Vorbis audio codec, making it suitable for HTML5 video elements. WEBM files are often used for streaming high-quality videos with efficient compression, particularly for web applications.
WEBM is optimized for use in modern web browsers such as Google Chrome, Mozilla Firefox, and Opera, providing excellent video playback without requiring plugins.
How to open WEBM?
WEBM files can be opened using popular media players like VLC Media Player, Google Chrome, Mozilla Firefox, and Opera. These browsers natively support the format without requiring additional plugins.
For Windows users, VLC and PotPlayer are great options for opening WEBM files. macOS users can use VLC or Elmedia Player for smooth playback.
WEBM is Developed by: Google
WEBM was Released on: 2010
Useful Links for WEBM:
How to convert WEBM?
Converting WEBM files is easy with our online video converter. Simply upload your WEBM file, select your desired output format (e.g., MP4, AVI, or MKV), and start the conversion.
Our tool ensures high-quality conversion with minimal loss of video and audio fidelity, making it compatible with a wide range of devices.
What Our Users Say
Don't take our word for it – here's what users think about Runconvert.
Saved me hours of work
I had to convert multiple PDFs to Word for editing. This tool made it so easy and preserved all the formatting perfectly. The batch processing feature is a game changer.
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Professional quality
As a graphic designer, I need reliable conversion tools. This site delivers professional quality every time. The image conversions maintain resolution and color accuracy.
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Fast and reliable
I've tried many conversion tools but this one is by far the fastest and most reliable. No watermarks, no quality loss, and the interface is so intuitive.
David K
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