How to convert MKV to FLAC
To convert MKV to FLAC, upload your MKV file, choose FLAC as the output format and press Convert. The finished FLAC file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter turns MKV video files into FLAC in your browser, with no software to install and no watermark. The conversion runs on our server using ffmpeg, and the result is ready to save to your phone or computer in seconds. Your MKV file is deleted automatically about 30 minutes after the conversion.
Why convert MKV to FLAC?
- Bit-perfect copy of the original
- About 40 to 60 percent smaller than WAV
- Supports tags and cover art
- Opens in: VLC, foobar2000, Android, Windows 10+, many hi-fi players and recent iOS
What to expect from this conversion
- Only the first audio track is extracted. The picture is dropped, so the file is a small fraction of the video's size.
- FLAC is lossless, so the sound is kept exactly and the file is large.
- Videos with no sound track cannot be converted to audio.
MKV vs FLAC
| Property | MKV | FLAC |
|---|---|---|
| Full name | Matroska Video | Free Lossless Audio Codec |
| Released | 2002, Matroska.org (open standard) | 2001, Xiph.Org Foundation |
| Family | Video | Audio |
| Opens in | VLC, Plex, Kodi, most Android players and modern Windows; limited on iOS and older TVs | VLC, foobar2000, Android, Windows 10+, many hi-fi players and recent iOS |
| Best for | movie and TV archives with multiple languages; keeping subtitles inside the file | archiving a CD collection; audiophile listening |
Steps to convert MKV to FLAC
- Drop your MKV file onto the converter, or click to choose it.
- Check that FLAC is selected as the target format and adjust the options if you want.
- Press Convert, then save the new FLAC file to your device when it finishes.
Tips for the best result
- Choose MP3 for the widest compatibility.
- Pick FLAC or WAV if you want to edit the sound afterwards.
Frequently asked questions
How do I convert MKV to FLAC?
Drop your MKV file on the converter, confirm that FLAC is the target format and press Convert. When it finishes, press Save to device or download the FLAC file. No account or software is needed.
Is the MKV to FLAC converter free?
Yes. It is free, with no watermark, no sign-up and no limit on how many files you convert. The site is supported by ads.
What should I know before converting MKV to FLAC?
Only the first audio track is extracted. The picture is dropped, so the file is a small fraction of the video's size. FLAC is lossless, so the sound is kept exactly and the file is large.
Can I extract the sound from a MKV video as FLAC?
Yes. The first audio track is extracted and saved as FLAC. The video picture is not included.
Which programs open FLAC files?
FLAC files open in VLC, foobar2000, Android, Windows 10+, many hi-fi players and recent iOS.
How large a file can I convert?
Up to 500 MB per file. Files are deleted from the server about 30 minutes after conversion, and no one looks at them.