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Convert MKV to FLAC Online Free

Convert MKV to FLAC instantly in your browser. No uploads needed - your files stay private on your device.

drag & drop files here

or click to browse

Images, videos, audio, documents, and ZIP archives are processed locally in your browser. Nothing gets uploaded.

Why extract audio from MKV?

  • ✓Create audio-only versions for podcasts or music libraries
  • ✓Reduce file size when video content isn't needed
  • ✓Extract soundtracks, voiceovers, or background music
  • ✓Prepare audio for editing in dedicated audio software

How to convert MKV to FLAC

1

Upload your file

Drag and drop your MKV file onto the converter, or click to browse your files.

2

Select FLAC as output

Choose FLAC from the format dropdown. The converter will automatically detect your file type.

3

Convert instantly

Your file is processed entirely in your browser using WebAssembly. No upload needed.

4

Download your file

Click the download button to save your converted FLAC file.

About MKV format

MKV (Matroska) is a flexible, open-standard container format that can hold virtually unlimited video, audio, and subtitle tracks. Popular for high-definition video distribution, MKV supports modern codecs and features like chapters and metadata. It's the format of choice for video enthusiasts.

Pros

  • +Supports virtually any codec
  • +Multiple audio and subtitle tracks
  • +Chapter and metadata support

Cons

  • -Limited device playback support
  • -Not suitable for streaming
  • -May require codec packs on some systems

About FLAC format

FLAC is the leading lossless audio compression format, reducing file sizes by 50-60% while preserving perfect audio quality. Open-source and royalty-free, FLAC is the choice of audiophiles and music collectors who refuse to compromise on sound quality. It supports high-resolution audio up to 32-bit/192kHz.

Pros

  • +Lossless compression with smaller sizes than WAV
  • +Open source and royalty-free
  • +Supports high-resolution audio

Cons

  • -Larger than lossy formats
  • -Limited portable device support
  • -Overkill for casual listening

Frequently asked questions

Is it safe to convert MKV to FLAC online?↓
Yes, Convt processes your files entirely in your browser using WebAssembly. Your files never leave your device - no data is uploaded to any server. This makes it completely private and secure.
How long does MKV to FLAC conversion take?↓
Conversion is typically instant for small to medium files. Larger files may take a few seconds depending on your device's processing power. Since everything runs locally, speed depends on your hardware rather than internet connection.
Is there a file size limit for conversion?↓
There's no artificial file size limit. However, very large files (over 500MB for video, 100MB for images) may strain your browser's memory. For best results, ensure you have enough available RAM.
Do I need to install any software?↓
No installation required. Convt runs entirely in your web browser. It works on any modern browser including Chrome, Firefox, Safari, and Edge on desktop and mobile devices.
Can I convert multiple files at once?↓
Yes, you can add multiple files to the converter and process them all. Each file will be converted individually and you can download them separately or together.
Can I extract audio from my MKV video?↓
Yes! Select an audio format (MP3, WAV, OGG, etc.) as the output format to extract just the audio track from your video file.

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MKV→MP4MKV→WEBMMKV→MOVMP4→FLACWEBM→FLACMOV→FLAC