How do I convert Matroska (MKV) to MP4?

Upload your Matroska (MKV) file using the box above, confirm MP4 as the output format, then select Convert. The converted file is ready to download as soon as processing finishes — usually in a few seconds.

Is converting MKV to MP4 free?

Yes, and there is nothing to sign up for. Every conversion is free, there is no paid tier, and the limits are the same for everyone.

Will the quality change when converting to MP4?

MP4 uses lossy compression, so some data is discarded to keep the file small. The default quality setting is tuned to be visually or audibly transparent for most material, and you can raise it in the conversion settings.

What happens to my file afterwards?

The uploaded file is deleted as soon as the conversion completes, and the converted file is removed automatically once its retention window ends. Download links are signed and expire within minutes.

mkvmp4

Convert Matroska (MKV) to MP4

Free online converter for Matroska (MKV) files. H.264/AAC video that plays on virtually any device. Nothing to install, no watermark, and every file is deleted automatically.

Drag and drop your files

Upload a Matroska (MKV) file to convert it to MP4. Up to 200 files at once, 10 GB each.

Free · up to 200 files · 10 GB each · files deleted automatically after 168 hours.

About MKV and MP4

Matroska (MKV)

Flexible container for high-quality video.

video/x-matroska

MP4

H.264/AAC video that plays on virtually any device.

video/mp4

Other Matroska (MKV) conversions

mkv to webm
mkv to mov
mkv to avi
mkv to gif
mkv to mp3
mkv to wav
mkv to flac
mkv to ogg

Other ways to get MP4

webm to mp4
mov to mp4
avi to mp4
gif to mp4