Convert MKV to WEBM

Convert MKV to WEBM online for free. Upload your MKV and get a high-quality WEBM in seconds. No install, no watermark, files deleted automatically.

Free online MKV to WEBM converter

Convert MKV to WEBM in a few clicks. Add your MKV above, and Tool Cloud converts it on our servers and gives you a WEBM to download, with no software to install and no watermark.

How to convert MKV to WEBM

1
Upload your MKV file
Click "Select Files" or drag and drop your MKV into the upload box.
2
Adjust the options
Optionally pick quality, size or other settings for your WEBM output.
3
Download your WEBM
Click "Process", wait a few seconds, then download your converted WEBM.

About the formats

MKVMatroska Video

MKV is a flexible open video container that can hold multiple audio tracks and subtitles. It is popular for movies and series, but not every device or editor supports it.

WEBMWebM Video

WebM is an open video format designed for the web. It is supported by all modern browsers and produces small files, making it great for websites.

Frequently asked questions

How do I convert MKV to WEBM?

Add your MKV above, click "Process", and download the WEBM when it is ready. It usually takes just a few seconds.

Is the MKV to WEBM converter free?

Yes. Each use costs 6 credits, and everyone gets 20 free credits every day without an account. Sign up to get 50 free credits, or buy a credit pack if you need more.

Will converting MKV to WEBM reduce quality?

Both MKV and WEBM use lossy compression. Tool Cloud converts at a high quality setting by default, so the difference is usually not noticeable.

Are my files safe?

Yes. Your files are only accessible to you, are transferred over an encrypted connection, and are deleted automatically after processing.

Can I convert multiple MKV files to WEBM at once?

Yes. Select several files at once and Tool Cloud converts them all. You can download each WEBM when it is ready.

Why Tool Cloud

Fast, private and built for real work

Everything runs on our servers, so it works the same on any device.

Lightning fast

Files are processed in seconds by a dedicated worker queue, with live progress while you wait.

High quality output

Professional-grade engines like FFmpeg and Pillow keep your output crisp and faithful.

Secure & private

Uploads are only visible to you and are deleted automatically after processing.

Keep going

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