FLAC to MKV Converter
Convert FLAC audio files to MKV (Matroska) container format for versatile multimedia projects. Audio remains lossless FLAC inside the MKV container. Professional-quality audio conversion powered by FFmpeg, all processing happens securely in your browser.
Recommended Settings
For Multimedia
- •Lossless FLAC audio preserved
- •Supports chapters and metadata
- •Versatile container format
For Archiving
- •Perfect audio quality
- •Multiple track support
- •Open-source format
Pro Tips
- •Audio remains lossless FLAC inside MKV container
- •MKV supports chapters, metadata, and cover art
- •Excellent for multimedia projects and archiving
Most Popular
Lossless FLAC audio in versatile MKV container
When to Use This Tool
MKV is a flexible multimedia container that can store high-quality lossless audio with metadata.
Recommended: Lossless
Store FLAC audio in MKV containers for versatile multimedia projects with chapters and metadata.
Recommended: Lossless
MKV supports multiple audio tracks, subtitles, and chapters in a single file.
Recommended: Lossless
How It Works
Upload your FLAC audio file
FFmpeg wraps FLAC in MKV container
Download your MKV file with lossless audio
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by FFmpeg.wasm (WebAssembly) for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What is MKV format?
MKV (Matroska) is an open-source multimedia container format that can hold video, audio, subtitles, and metadata in a single file. It supports virtually any codec, including lossless FLAC audio.
Why convert FLAC to MKV?
Converting FLAC to MKV allows you to store lossless audio in a versatile container that supports chapters, metadata, cover art, and multiple audio tracks. It's useful for creating comprehensive audio archives or multimedia projects.
Will I lose quality converting from FLAC to MKV?
No, the audio remains in FLAC format (lossless) and is simply wrapped in an MKV container. There's no quality loss whatsoever - it's just a container change.
What's the difference between FLAC and FLAC in MKV?
The audio data is identical. MKV is just a container format that provides additional features like chapters, multiple audio tracks, and better metadata support. The FLAC audio inside remains lossless.
What players support MKV files?
VLC, MPC-HC, Plex, Kodi, and most modern media players support MKV files. MKV has excellent software support across all platforms.