MKV to MP4

Converts MKV video to MP4. MP4 plays in every major browser, phone, and social platform, which makes it the safest choice for sharing. Add your files, convert them in one batch, and download each MP4 directly.

1-hour guest cleanupMalware scanned2 at once, 10 per day

How to convert MKV to MP4

The converter runs in your browser and an isolated processing queue. Nothing to install, and every upload is scanned for malware before it is processed.

  1. 1Add your MKV filesDrop MKV files into the converter or choose them from your device. Guest files can be up to 15 MB each.
  2. 2Choose MP4Set MP4 as the output for the whole batch, then change individual files if needed.
  3. 3Convert and downloadStart the batch and download each MP4 directly, or save it to your workspace to get a permanent link.
MKV

Matroska video

A flexible open container that can hold video, audio, and subtitles.

Best for high-quality media libraries and multi-track video.

MP4

MP4 video

A broadly compatible video container used across browsers, phones, and apps.

Best for web playback, social media, and device compatibility.

MKV to MP4

What to expect from MKV to MP4

What changes in the file, and what to check before you share the result.

Why MP4

MP4 plays in every major browser, phone, and social platform, which makes it the safest choice for sharing.

Guest size limit

Guest video conversions are limited to 15 MB per file. Sign in to a free account for larger videos.

Starting from MKV

MKV files can contain several audio and subtitle tracks alongside the video.

MKV to MP4 questions

Short answers about limits, privacy, and keeping the converted file.

What happens to extra audio and subtitle tracks?

MKV files can carry several tracks. The MP4 may include only the main video and audio, so check the result if you rely on alternate languages or subtitles.

Is the MKV to MP4 converter free?

Yes. Without an account you can convert up to 10 files a day, 2 at a time, up to 15 MB each. A free account adds monthly conversion credits and larger files.

How long are my files kept?

Guest uploads and results are deleted automatically after 1 hour. Conversions stay temporary when you are signed in too, unless you save a result to your workspace.

Can I get a permanent link to the MP4 file?

Yes. Save the result to a SteadyLink workspace and it gets a stable link. If you make a new version later, replace the file and the link stays the same.

Related converters

More working routes for the same source or destination format.

MP4→MKVMKV→WEBMMKV→MOVMKV→AVIMKV→GIFMKV→MP3WEBM→MP4MOV→MP4AVI→MP4

Browse by file type

Each category has its own converter, format list, and common routes.

Start a conversion

Images

JPG, PNG, WebP, AVIF, GIF, TIFF, BMP, HEIC, ICO, SVG

Documents

DOC, DOCX, ODT, RTF, TXT, HTML, PDF

Spreadsheets

XLS, XLSX, ODS, CSV, PDF

Presentations

PPT, PPTX, ODP, PDF

PDF

PDF, DOCX, JPG, PNG, TXT

Audio

MP3, WAV, AAC, FLAC, OGG, M4A, Opus

Video

MP4, WebM, MOV, AVI, MKV, GIF, MP3

Archives

ZIP, TAR, TAR.GZ, 7Z

Ebooks

EPUB, MOBI, AZW3, PDF, TXT

Keep the useful ones.

Conversions remain temporary even when you are signed in, so save a result to your workspace when you want a stable URL and revision history.

Open a workspace
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