Tools

Popular

Language

MKV to FLAC converter

Change MKV audio into FLAC in a few clicks, with the output format already set.

Drop a video here

MKV · up to 100 MB per file · You can also paste files with Ctrl + V

Files are deleted after 2 hours. You can delete them right after downloading.

How to use MKV to FLAC converter in 3 steps

  1. Upload the MKV file

    Drop it on the page, or choose it from your device, Google Drive or a direct download link.

  2. Check the output format

    FLAC is already selected as the output. It is lossless, so there is no bitrate to choose.

  3. Convert and download

    Start the conversion, then download the FLAC file or save it to Google Drive.

Guides

A short read first gets you the right result on the first try.

See all on the blog See all
Change volume

How to Make Volume Louder on Android: Simple Steps

If your Android phone sounds too quiet, you can boost the volume through settings, apps, and equalizer tools—here's how.

5 min read Cut audio

Cut audio and make a ringtone that starts cleanly

A good cut starts on the beat and ends gently. Two handles, two time fields and a fade in and out are all it takes.

2 min read

Features

Many phones, TVs, game consoles and editing apps cannot open MKV files, even though the video inside is perfectly fine. This page does exactly that conversion: add your MKV file and BigQTools returns the sound as FLAC, with the same file name and a new extension. For compressed formats you can choose 128 kbps for speech, 192 kbps for music or 320 kbps for the best quality; WAV and FLAC always keep the full signal.

  • Preset for MKV to FLAC, so the right format is always used.
  • Bitrate choices of 128, 192 and 320 kbps for compressed formats.
  • Also takes the soundtrack from video files such as MP4, MOV and MKV.
  • The file name is kept; only the extension changes to .flac.
  • Files travel over HTTPS and are deleted automatically after 2 hours.

Frequently asked questions

Will converting MKV to FLAC affect the sound quality?

Lossy formats such as MP3, M4A and OGG drop detail you rarely hear at 192 or 320 kbps. WAV and FLAC keep everything that is in the source, but no format can restore quality the MKV file never had.

What is the difference between MKV and FLAC?

MKV, short for Matroska, is a flexible container that can hold several audio tracks and subtitle tracks in one file. FLAC compresses audio without losing any quality, which makes it a favourite of audiophiles and music archives.

Can I convert MKV to other audio formats?

Yes. The “Convert audio” page takes the same file and offers MP3, M4A, WAV, FLAC, OGG and M4R.

Can I convert audio from a YouTube or Spotify link?

No. Streaming links are not supported for copyright reasons. A file on your device, in Google Drive or behind a direct download link works.

Other conversions

Convert audio AAC to MP3 converter AMR to MP3 converter AVI to MP3 converter FLAC to MP3 converter M4A to MP3 converter M4V to M4R converter M4V to MP3 converter M4V to OGG converter M4V to WAV converter MKV to M4R converter MKV to MP3 converter MKV to OGG converter
Cut audio Cut songs and recordings, make ringtones with fades. Change volume Make audio louder, quieter or evenly loud. Merge audio Join songs or recordings into one file, with optional crossfade. Change audio speed Play audio faster or slower without chipmunk voices. Convert video Change a video to MP4, WebM, MOV, MKV or AVI. Convert image Convert images to JPG, PNG, WebP, AVIF, GIF, BMP or TIFF.