How do I convert Matroska (MKV) to Opus?

Upload your Matroska (MKV) file using the box above, confirm Opus as the output format, then select Convert. The converted file is ready to download as soon as processing finishes — usually in a few seconds.

Is converting MKV to OPUS free?

Yes, and there is nothing to sign up for. Every conversion is free, there is no paid tier, and the limits are the same for everyone.

Will the quality change when converting to Opus?

OPUS uses lossy compression, so some data is discarded to keep the file small. The default quality setting is tuned to be visually or audibly transparent for most material, and you can raise it in the conversion settings.

What happens to my file afterwards?

The uploaded file is deleted as soon as the conversion completes, and the converted file is removed automatically once its retention window ends. Download links are signed and expire within minutes.

mkvopus

Convert Matroska (MKV) to Opus

Free online converter for Matroska (MKV) files. Low-latency codec with excellent quality at low bitrates. Nothing to install, no watermark, and every file is deleted automatically.

Drag and drop your files

Upload a Matroska (MKV) file to convert it to Opus. Up to 200 files at once, 10 GB each.

Free · up to 200 files · 10 GB each · files deleted automatically after 168 hours.

About MKV and OPUS

Matroska (MKV)

Flexible container for high-quality video.

video/x-matroska

Opus

Low-latency codec with excellent quality at low bitrates.

audio/opus

Other Matroska (MKV) conversions

mkv to mp4
mkv to webm
mkv to mov
mkv to avi
mkv to gif
mkv to mp3
mkv to wav
mkv to flac

Other ways to get Opus

mp3 to opus
wav to opus
flac to opus
ogg to opus
aac to opus
m4a to opus
mp4 to opus
webm to opus