How do I convert MKV to FLAC?

Drop your MKV file onto the converter above, make sure FLAC is selected, and click Convert. When it's done, download the FLAC file — it usually takes a few seconds.

Is it safe to convert MKV to FLAC here?

Yes. MKV to FLAC conversion happens entirely inside your browser using WebAssembly, so your file is never uploaded to any server.

Is the MKV to FLAC converter free?

Yes — free with no watermark. Signed-out visitors can convert 25 files a day, and a free account raises that to 250.

Will converting MKV to FLAC reduce quality?

No — FLAC preserves the content of your MKV file as faithfully as the format allows.

Can I convert multiple MKV files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.

MKV→MP4 MP3→FLAC MKV→MP3 MP4→FLAC MKV→WebP WAV→FLAC MKV→MOV MOV→FLAC MKV→GIF M4A→FLAC MKV→WAV WebM→FLAC MKV→WebM MKV→M4A MKV→AVI MKV→AAC MKV→OGG MKV→WMV MKV→Opus MKV→M4V MKV→FLV MKV→MPEG MKV→3GP MKV→WMA MKV→TS MKV→MPG MKV→AIFF MKV→AMR MKV→VOB MKV→M4B AAC→FLAC AVI→FLAC OGG→FLAC WMV→FLAC Opus→FLAC WMA→FLAC M4V→FLAC 3GP→FLAC FLV→FLAC MPEG→FLAC AIFF→FLAC AMR→FLAC TS→FLAC MPG→FLAC M4B→FLAC MTS→FLAC VOB→FLAC M2TS→FLAC PNG→JPG JPG→PNG PNG→WebP JPG→WebP WebP→PNG WebP→JPG HEIC→PNG HEIC→JPG MP4→MP3 PNG→JPEG JPG→JPEG JPEG→PNG JPEG→JPG PNG→PDF JPG→PDF PDF→PNG PDF→JPG HEIC→WebP MP4→WebP PDF→DOCX DOCX→PDF JPEG→WebP WebP→JPEG PNG→GIF JPG→GIF GIF→PNG GIF→JPG MP4→MOV MOV→MP4 WebP→PDF HEIC→JPEG WebP→GIF GIF→WebP HEIC→PDF MP3→WAV WAV→MP3 JPEG→PDF PDF→JPEG SVG→PNG SVG→JPG HEIC→GIF MOV→MP3 MP4→GIF GIF→MP4 JPEG→GIF GIF→JPEG PNG→AVIF JPG→AVIF AVIF→PNG AVIF→JPG MP3→M4A M4A→MP3 GIF→PDF SVG→PDF PNG→SVG JPG→SVG PDF→SVG SVG→WebP MOV→WebP MP4→WAV MP4→WebM WebM→MP4 WebP→AVIF AVIF→WebP WebP→SVG SVG→JPEG MP4→MKV HEIC→AVIF MP4→M4A JPEG→AVIF AVIF→JPEG JPEG→SVG MOV→GIF GIF→MOV WebM→MP3 AVIF→PDF FLAC→MP3 MP4→AVI AVI→MP4 GIF→AVIF AVIF→GIF SVG→GIF GIF→SVG WebM→WebP MOV→WAV XLSX→PDF CSV→PDF EPUB→PDF PDF→EPUB MOV→WebM WebM→MOV PNG→ICO JPG→ICO ICO→PNG ICO→JPG MP3→AAC WAV→M4A AAC→MP3 M4A→WAV AVI→MP3 MOV→MKV MOV→M4A DOCX→EPUB EPUB→DOCX CSV→DOCX PDF→TXT DOC→PDF TXT→PDF WebP→ICO ICO→WebP PPTX→PDF AVI→WebP

MKVFLAC

Convert MKV to FLAC

Free and private: MKV files are converted in your browser on computers; on phones, in our fast cloud and deleted automatically.

In your browser (fast cloud on phones)
No watermark
Batch & ZIP download

Need a smaller MKV? Compress MKV

How to convert MKV to FLAC

1
Add your MKV files
Drag and drop MKV files onto the converter, paste them, or click to browse. You can add several at once.
2
Choose FLAC
FLAC is already selected. Open Options if you want to change quality, size or metadata.
3
Convert
Click Convert. Your files are converted right in your browser in seconds.
4
Download your FLAC
Download each FLAC file, or everything at once as a ZIP.

MKV vs FLAC

From

MKV · Matroska Video

MKV is a flexible open container that can hold unlimited video, audio and subtitle tracks in nearly any codec.

Type: Video
Extension: .mkv
MIME: video/x-matroska
Best for: movies and series with multiple audio and subtitle tracks

Open standard

All MKV conversions →

FLAC · Free Lossless Audio Codec

FLAC compresses audio without losing any quality, typically halving the size of a WAV file.

Type: Audio
Extension: .flac
MIME: audio/flac
Best for: archiving CDs and high-fidelity music libraries

LosslessOpen standard

All FLAC conversions →

MKV to FLAC: frequently asked questions

Free, private and in your browser