Convert MKV to FLAC
Free, fast and secure — convert MKV to FLAC right in your browser.
Pull the audio out of your MKV as FLAC
Converting MKV to FLAC extracts a clean audio track from your video, giving you a compact FLAC audio you can play, share or add to a playlist without the video.
How to convert MKV to FLAC
- 1 Drop your MKV file into the converter above.
- 2 It is converted to FLAC automatically — no settings to fiddle with.
- 3 Download your new FLAC file instantly.
MKV vs FLAC
| Feature | MKV | FLAC |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | No | No |
| Animation | Yes | No |
| MIME type | video/x-matroska | audio/flac |
| Best for | Archiving high-quality video with multiple tracks — converted to MP4 for everyday playback. | Archiving and high-fidelity music libraries where quality must be preserved. |
About the formats
Matroska video
MKV (Matroska) is a flexible open container that can bundle many video, audio and subtitle tracks in one file. It is popular for high-quality archives and media libraries.
Strengths
- Holds multiple audio/subtitle tracks
- Open and future-proof
- Great for high-quality storage
Limitations
- Not supported on many phones/browsers
- Often needs converting to play
- Larger than streaming formats
Best for: Archiving high-quality video with multiple tracks — converted to MP4 for everyday playback.
FLAC audio
FLAC is a lossless format that compresses audio with no quality loss — typically to about half the size of WAV. It is the audiophile choice for archiving music.
Strengths
- Lossless, full quality
- Smaller than WAV
- Rich metadata and tagging
Limitations
- Larger than lossy formats
- Not supported by every player
- Overkill for casual listening
Best for: Archiving and high-fidelity music libraries where quality must be preserved.