MKV to MP3 Converter

Drag & Drop or Click to Select a Video

MP4, MOV, MKV, WebM, or an audio file

Tip: paste an audio file from clipboard (Ctrl/⌘+V).

Shareable link

Settings are written to the URL as you change them. Nothing differs from the defaults yet.

Convert MKV to MP3

Drop a Matroska file and download an MP3 of its audio at 192 kbps. Sample rate and channel count carry through from the source track.

Matroska holds almost anything

MKV is a container with unusually loose rules about what goes inside it, which is why it is the format where extraction most often fails. AAC, Opus, Vorbis, MP3, and FLAC all decode. AC-3, E-AC-3, and DTS, the surround formats used on discs and in film rips, have no decoder in the browser and cannot be read here.

The codec is reported as soon as the file loads, so a file that will not work says so before you wait on it.

Surround tracks

Channel count is carried through rather than reduced, and MP3 encodes mono and stereo. A 5.1 track that decodes can therefore fail at the encoder instead of at the decoder. Take it out as WAV in the full tool, then downmix it with the sample rate converter, which writes mono from any source.

Frequently Asked Questions

Which MKV audio codecs work?

AAC, Opus, Vorbis, MP3, FLAC, and PCM decode here. AC-3, E-AC-3, and DTS do not, and those are common in film rips.

How do I know which codec my MKV holds?

Load the file and read the source codec in the row under the controls. It is reported before anything is written.

My MKV has audio in three languages. Which one is taken?

The track the container marks as primary. Multi-language releases usually put the original language first, but not always, and there is no track picker here.

Why does my file fail to load?

Either the audio codec has no decoder in this browser, which is the usual answer for AC-3 and DTS, or the file has no audio track at all.