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ConvertAnyVideo

MKV to FLAC Converter

Extract the audio from MKV videos and save it as FLAC. Pick the bitrate, trim the start and end, and download in seconds.

or drop files here

Up to 1 GB per file · Files never leave your device

  • 100% free
  • No sign-up
  • No upload — private
  • No watermark

How to convert MKV to FLAC

  1. Add your MKV files

    Click “Choose Files” or drag and drop your MKV videos onto this page.

  2. FLAC is selected

    The output is already set to FLAC. Open Advanced settings if you want to change the bitrate or trim the audio.

  3. Convert and download

    Click Convert. Your FLAC file is ready in moments — nothing is uploaded.

About the formats

MKV

Matroska Video

MKV (Matroska) is a flexible open container that can hold several audio tracks, subtitles and chapters in one file. It is popular for movies and series.

FLAC

Free Lossless Audio Codec

FLAC compresses audio without losing any quality. It is the favourite format of audiophiles and music archives.

Frequently asked questions

How do I convert MKV to FLAC?

Click “Choose Files” and select your MKV file (or drag it onto the page). FLAC is already selected as the output, so just click Convert and download your FLAC file when it’s ready.

Will the audio quality change?

FLAC is lossless, so the sound is saved exactly as it is in the video.

Is it safe to convert MKV files here?

Yes. Conversion runs inside your own web browser, so your files are never uploaded to our servers or anyone else’s. Nobody can see them, and nothing is stored after you close the tab.

Is the MKV to FLAC converter free?

Yes, it’s completely free. There’s no sign-up, no watermark and no limit on how many files you convert. Each file can be up to 1 GB.

Can I convert several MKV files at once?

Yes. Add as many MKV files as you like and convert them in one go, then download them one by one or together as a ZIP file.

Convert MKV to other formats

Convert other formats to FLAC