How do I convert Matroska (MKV) to FLAC?

Upload your Matroska (MKV) file using the box above, confirm FLAC 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 FLAC 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 FLAC?

Both formats store data losslessly, so the conversion preserves the original quality exactly.

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.

mkvflac

Convert Matroska (MKV) to FLAC

Free online converter for Matroska (MKV) files. Lossless compression with roughly half the size of WAV. 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 FLAC. 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 FLAC

Matroska (MKV)

Flexible container for high-quality video.

video/x-matroska

FLAC

Lossless compression with roughly half the size of WAV.

audio/flac

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 ogg

Other ways to get FLAC

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