How to convert Matroska (MKV) to FLAC
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Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
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Convert Matroska (MKV) to FLAC
NexMedia converts Matroska (MKV) to FLAC on its own servers. Processing time depends on the file size and how busy the queue is.
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Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About Matroska (MKV)
Matroska (MKV) is an open container format that can hold almost any video and audio codec, any number of audio and subtitle tracks, chapters and attachments.
It is popular for films and series with several audio languages and subtitle tracks, and for archiving video.
Many phones, browsers and TVs do not play MKV files directly, even when they support the codecs inside.
Convert MKV to FLAC online free, no account required — FLAC is a lossless compressed audio format.
Change MKV to FLAC without losing quality — convert MKV to FLAC free in your browser.
Why won't my MKV file play on my TV or phone? Most TVs and phones play MP4 or H.264 but not the Matroska container, so converting to MP4 makes the file playable on almost any device.
About FLAC
FLAC (Free Lossless Audio Codec) compresses audio without losing anything: the files are typically half to two thirds the size of WAV and decode back to the exact original samples.
Music archives, CD rips and high-resolution downloads.
FLAC files are several times larger than MP3, and some older players and car stereos do not play them.
Why convert CDs to FLAC instead of MP3? The copy is bit-for-bit identical to the original, so the archive never loses quality however often it is converted later.
What changes when you convert MKV to FLAC
- The soundtrack of the MKV is re-encoded as FLAC at the default settings, so it is close to the original but not bit-identical.
- Only the sound is kept: the FLAC file contains the audio track of your MKV, and the picture is dropped.
Settings you can change
Before you convert MKV to FLAC, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted FLAC file is kept for 2 hours, then deleted.
MKV to FLAC: questions and answers
Does converting MKV to FLAC reduce quality?
The soundtrack of the MKV is re-encoded as FLAC at the default settings, so it is close to the original but not bit-identical.
What is the difference between MKV and FLAC?
MKV is a flexible open container for video with any number of audio and subtitle tracks. FLAC is a lossless compressed audio format.
Can I change the settings when converting MKV to FLAC?
Before you convert MKV to FLAC, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Do I need an account to convert MKV to FLAC?
No. You can convert MKV to FLAC without an account; signing in raises the file-size and daily limits.
How long is my converted FLAC file kept?
The FLAC file you convert from MKV is kept for 2 hours, then deleted automatically.
When I convert MKV to FLAC, can I keep just the sound?
Only the sound is kept: the FLAC file contains the audio track of your MKV, and the picture is dropped.
Will converting MKV to FLAC change my original file?
No. The conversion reads your MKV and writes a new FLAC file, leaving your original MKV file untouched.