MKV to FLAC Converter

Batch convert mkv files to flac format online for free

Choose files or drag & drop them here.
Only you have access to your files.
All files will be deleted after one hour.

How to convert MKV files to FLAC online?

Step-by-step guide to convert mkv to flac using AnyConv. It works on PC (Windows, Mac, Linux) and mobile devices (iPhone, Android).

Upload MKV-file

Drag and drop your MKV file into the upload area. The maximum file size is 100 MB.


Click "Convert" to change mkv to flac. The conversion usually takes a few seconds.

Download your FLAC

Now you can download the FLAC file. The download link only works on your device.


  • ❓ How can I convert files from MKV to FLAC?
    First you need to add file for conversion: drag and drop your MKV file or click the "Choose File" button. Then click the "Convert" button. When MKV to FLAC conversion is completed, you can download your FLAC file.
  • ⏱️ How long does it take to convert MKV to FLAC?
    Video conversion takes quite a while. It will probably take you a few minutes to change MKV to FLAC.
  • 🛡️ Is it safe to convert MKV to FLAC on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including MKV to FLAC) is absolutely safe.
  • 💻 Can I convert MKV to FLAC on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our MKV to FLAC converter works online and does not require software installation.

Information about MKV and FLAC file formats

🔸 File format MKV FLAC
🔸 Full name MKV - Matroska FLAC - Free Lossless Audio Codec
🔸 File extension .mkv, .mk3d, .mka, .mks .flac
🔸 MIME type video/x-matroska, audio/x-matroska audio/x-flac
🔸 Developed by Xiph.Org Foundation
🔸 Type of format Container format Audio
🔸 Description The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows. FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio and is also the name of the reference codec implementation. Digital audio compressed by FLAC's algorithm can typically be reduced to 50-60% of its original size and decompress to an identical copy of the original audio data.
🔸 Technical details Matroska is similar in concept to other containers like AVI, MP4, or Advanced Systems Format (ASF) but is entirely open in specification, with implementations consisting mostly of open-source software. The technical strengths of FLAC compared to other lossless formats lie in its ability to be streamed and decoded quickly, independent of compression level. Compared to compressed audio formats, FFmpeg's FLAC implementation was noted to have the fastest and most efficient embedded decoder of any modern lossless audio format.
🔸 File conversion MKV conversion FLAC conversion
🔸 Associated programs VLC Media Player Windows 10, Android, Blackberry 10 and Jolla devices.
🔸 Wiki
MKV to FLAC Conversion Quality Rating
4.4 (1536 votes)
Convert and download at least one file to rate.