Online MKV Converter

Convert any audio and video to MKV in seconds straight from your browser. No installs. No watermarks. 100 % free.

Drop your file here to upload

Click or drag & drop to upload your file

Select a file

Select format to convert to

Search for a format

Video Formats

3GP (.3gp)

AVI (.avi)

FLV (.flv)

M4V (.m4v)

MK3D (.mk3d)

MOOV (.moov)

MOV (.mov)

MP4 (.mp4)

MPA (.mpa)

MPE (.mpe)

MPEG (.mpeg)

MPG (.mpg)

MXF (.mxf)

QT (.qt)

VOB (.vob)

WEBA (.weba)

Audio Formats

AAC (.aac)

AIF (.aif)

AIFC (.aifc)

AIFF (.aiff)

AMR (.amr)

AU (.au)

CAF (.caf)

DSS (.dss)

FLAC (.flac)

GSD (.gsd)

GSM (.gsm)

M2V (.m2v)

M4A (.m4a)

MP2 (.mp2)

MP3 (.mp3)

MPGA (.mpga)

MTS (.mts)

MUS (.mus)

OGA (.oga)

OGG (.ogg)

OGV (.ogv)

OGX (.ogx)

RM (.rm)

SWF (.swf)

TS (.ts)

WAV (.wav)

WEBM (.webm)

WMA (.wma)

WMV (.wmv)

XSPF (.xspf)

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Why choose HappyScribe?

47+ Formats

Convert over 47 formats into popular outputs like MKV, MKV, WebM, AVI, and more.

100% Free

No signups, no fees, no hidden restrictions. Convert to MKV directly in your browser for free.

Secure

We take your security seriously. All file transfers use 256-bit SSL encryption.

Online

No installs needed; convert to MKV right from your browser, on any device, anytime.

How to convert to MKV?

1. Upload media file

Start by dragging and dropping your file into the upload area, or click to browse your device and select your file in the list.

2. Choose your target format

Next, pick MKV as the format you’d like to convert your video into. Alternatively, we support +47 formats that you can choose from. When you’re ready, hit the Convert button.

3. Download your converted MKV

Once the conversion is complete, you’ll get a download link right away. Just click to save the file to your device. It’s fast, easy, and doesn’t require any software installation.

Frequently Asked Questions

How to open a MKV file?

VLC, MPV, and Kodi handle MKV flawlessly on every OS. Editing suites such as DaVinci Resolve import common codecs like H.264 or ProRes within MKV, but for delivery you may still export MP4. MKVToolNix lets you split, merge, and tag tracks without re‑encoding.

What is a MKV file?

Matroska Video (MKV) is a flexible open container that can accommodate virtually any codec, multiple subtitle tracks, and chapter points. It is built on EBML (Extensible Binary Meta Language), a binary cousin of XML, allowing unlimited, self‑describing elements. The project began in 2002 after developer Steve Lhomme forked the failed MCF container. With the explosion of H.264 ‘fansubs’, MKV became the default wrapper for anime communities, bundling soft‑subs and styled karaoke effects. In 2013 Matroska was standardised within the IETF as the basis for WebM, cementing its longevity.

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