How do I convert MKV files?

Choose your MKV files or drop them on this page, pick a format (MP4, MP3, WebM, MOV, GIF, WAV, M4A, FLAC, OGG, Opus and AAC), then select Convert and save the results.

Is it safe to convert MKV files here?

Yes. Decant converts MKV files in your browser, so they’re never uploaded, stored or logged.

Can I convert many MKV files at once?

Yes. Add as many as you like and they convert together. Save each result on its own, or all of them as one ZIP.

MKV converter: free, private, no upload

Decant

.mkv.mp4

Convert MKV files to MP4, MP3, WebM and more in your browser.

Drop files here

or paste them in. Whole folders work too.

Nothing is uploaded
Works offline
Free and open source

What are MKV files?

MKV (Matroska) is a flexible video container that can hold several audio and subtitle tracks. It’s common for films, but many devices won’t play it.

MKV to other formats

MP4
MP3
WebM
MOV
GIF
WAV
M4A
FLAC
OGG
Opus
AAC

Questions

How do I convert MKV files?: Choose your MKV files or drop them on this page, pick a format (MP4, MP3, WebM, MOV, GIF, WAV, M4A, FLAC, OGG, Opus and AAC), then select Convert and save the results.
Is it safe to convert MKV files here?: Yes. Decant converts MKV files in your browser, so they’re never uploaded, stored or logged.
Can I convert many MKV files at once?: Yes. Add as many as you like and they convert together. Save each result on its own, or all of them as one ZIP.