Convert MKV to FLAC
Pull the soundtrack out of any MKV video and save it as FLAC in seconds. Conversion happens inside your browser, so even large or private videos are never uploaded.
Drop MKV files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert MKV to FLAC
- Click "Choose files" or drag your MKV videos onto the page.
- Make sure "FLAC" is selected as the output format.
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your FLAC files.
Why convert MKV to FLAC?
FLAC files are much smaller than video and play on any music player, phone or car stereo.
FLAC is best for hi-fi music collections, archiving CDs and lossless streaming. Supported by Android, iOS 11+, Windows 10+, macOS, most hi-fi players and browsers.
Will I lose quality?
The audio is decoded from the MKV video and encoded to FLAC. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for FLAC.
MKV vs FLAC
| MKV | FLAC | |
|---|---|---|
| Full name | Matroska Video | Free Lossless Audio Codec |
| Type | video | lossless |
| Best for | films, TV recordings and archives | hi-fi music collections, archiving CDs and lossless streaming |
| Typical size | varies | ~5-6 MB at 16-bit / 44.1 kHz per minute |
| Compatibility | VLC, Plex, Kodi, most modern players. | Supported by Android, iOS 11+, Windows 10+, macOS, most hi-fi players and browsers. |
| Developed by | - | Xiph.Org Foundation (2001) |
MKV to FLAC: questions
How do I convert MKV to FLAC?
Open this page, add your MKV file, make sure FLAC is selected as the output format and click Convert. Your FLAC file is ready to download in seconds.
Will converting MKV to FLAC lose quality?
The audio is decoded from the MKV video and encoded to FLAC. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for FLAC.
Is this MKV to FLAC converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many MKV files to FLAC at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between MKV and FLAC?
MKV (Matroska Video) is a video format, an open container that can hold many audio, video and subtitle tracks. FLAC (Free Lossless Audio Codec) is a lossless format: lossless compression that shrinks audio to roughly 50-60% of WAV size without losing a single bit of quality.
Does it work on Mac, Windows, iPhone and Android?
Yes. The MKV to FLAC converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.