M2TS to MKV Converter

Convert M2TS files to MKV free in your browser — no signup, no install, and the file is never uploaded to a server.

Completely free Files are never uploaded No signup required
Drop files or click to select
M2TS → MKV

What changes in this conversion

  • The picture and sound are re-encoded to H.264 video with AAC audio inside the MKV container, which is what makes the result play on the widest range of devices.

How to use

  1. Add your M2TS file

    Drag the M2TS file onto the drop area above, or click it to pick a file from your device. You can add several files at once.

  2. Confirm MKV as the output

    MKV is already selected as the output format on this page. You can pick the resolution. Encoding is the slowest part, so smaller resolutions finish sooner.

  3. Run the conversion

    Press the convert button. Video is re-encoded frame by frame on your own machine, so a long clip can take several minutes. The tab has to stay open.

  4. Download the MKV file

    When it finishes, download the MKV file. Converting multiple files gives you the option to download them together as a ZIP.

About these formats

M2TS Blu-ray Video

The transport stream format used by Blu-ray discs and AVCHD camcorders.

Commonly used for Blu-ray rips, high-definition camcorder recordings

M2TS File format reference

MKV Matroska Video

An open-source video container able to hold unlimited subtitles, audio tracks, and chapters. It is favored for archiving high-quality video.

Commonly used for High-quality video archives, multilingual subtitled video

MKV File format reference

Frequently asked questions

Is converting M2TS to MKV really free?

Yes. M2TS to MKV conversion is completely free with no signup, no watermark, and no daily limit on the free plan for ordinary use.

Are my M2TS files uploaded to a server?

No. The conversion runs entirely inside your browser using WebAssembly, so the M2TS file never leaves your device. That is also why it works without an internet connection once the page has loaded.

Is there a file size limit for M2TS to MKV conversion?

The free plan handles files up to 200MB. Because processing happens on your own device, very large files depend on your computer's memory rather than a server quota.

Convert M2TS files to other formats

M2TS AAC M2TS AVI M2TS FLAC M2TS GIF M2TS M4A M2TS MOV M2TS MP3 M2TS MP4 M2TS OPUS M2TS WAV M2TS WEBM

Convert other formats to MKV

3G2 MKV 3GP MKV ASF MKV AVI MKV DIVX MKV F4V MKV FLV MKV M4V MKV MOV MKV MP4 MKV MPE MKV MPEG MKV

Video converter

What each file format is, what it is used for, and which formats it can be converted to.

Open converter Browse the full format reference