Get More Conversions
▶
VIDEO CONVERTER

WEBM to MKV

Convert a WEBM video into MKV to prepare media for a device, editing application or sharing platform. The conversion processes the actual media data, not just its filename extension.

NO SIGNUP NEEDEDConvert 2 files free every dayWant more? Create a free account for 5 daily conversions.
⇧

Drop your WEBM file here

or click to browse from your device

Maximum file size: 25 MB per file
No account required · Up to 2 conversions per network per day.

How to use WEBM to MKV online

  1. Use this converter right away without an account (2 free conversions per network each day), or sign in for your personal daily allowance.
  2. Upload your file in WEBM format using the uploader above.
  3. Select Convert to start the processing.
  4. Download your MKV result when processing finishes.

FileVado keeps uploaded and converted files temporarily for processing and download. See our Privacy Policy for automatic deletion details.

When should you use WEBM to MKV?

Use this tool when a website, app or recipient needs MKV instead of WEBM. Upload a supported file and inspect the result before sharing.

Input and output details

Supported input: WEBM. Output: MKV. This tool accepts one source file per conversion.

What to check after conversion

Transcoding can change image quality, audio tracks and file size. Duration and resolution safeguards apply.

Understand the file formats

Input: WEBM

WebM is a video container designed for web-oriented codecs.

Not every device or editing application supports all WebM codecs.

Result: MKV

MKV is a flexible multimedia container that can hold multiple tracks.

A different container may not preserve every audio or subtitle track.