No ads · No watermarks · Files deleted after an hour
MKV to MP4
Convert MKV videos to MP4 for phones, TVs and editing apps.
MKV (Matroska) is a flexible container that can hold several audio tracks, subtitles and chapters in one file, which is why it's popular for recordings and archived video. Many phones, TVs, editors and upload forms won't open it, while MP4 plays nearly everywhere.
Almost any file
Images, vector art, video, audio, documents, spreadsheets, slides, ebooks and archives: more than 400 conversions. Before anything runs, Filebender says what a conversion will lose and estimates the size of video, audio and many pictures; other files show their size once converted. It compresses PDFs, pictures and videos to the size you choose.
No ads, no watermarks
With a free account: 20 files a day, 2 of them videos, each up to 500 MB. No plan has ads, and nothing is stamped on your files. A pass is one payment that never renews, and one you haven't used can be refunded in full.
Private by default
Files are deleted an hour after converting, or at once when you ask, and photo location is removed unless you choose to keep it. Photos converted to JPG, PNG or WebP are done on your device when your browser can, so they never leave it. They still need your account and count towards your plan.
How to convert MKV to MP4
- Create a free account with Google or your email address, or sign in.
- Choose your MKV files: drop them on the box, pick them from your computer, open them from Google Drive, or paste a link.
- Pick the format each file should become. The gear button has size, quality and other settings.
- Press “Convert”, then download each file, or all of them in one ZIP.
Quick when the codecs fit
Many MKV files already hold H.264 video. Then Filebender copies the picture into the MP4 without encoding it again, which is quick and loses nothing; the sound is copied too if it's AAC, and converted to AAC otherwise. Other video, such as HEVC with 10-bit colour, is encoded as H.264.
Tracks and subtitles
The MP4 keeps the first video track and the first audio track. Other audio tracks, such as a commentary or another language, and subtitle tracks are left out, so check that the MKV's first audio track is the one you want.
How it counts
Converting an MKV to MP4 counts as one of your videos. With a free account that's 2 a day among 20 files, up to 500 MB each; a pass allows more, with files up to 2 GB. It runs on Filebender's servers, and the files are deleted an hour after converting.
Related tools
Questions
Can I keep the subtitles?
Not in the MP4 made here. If you need them, keep the MKV as well, or take the subtitles out with a subtitle tool first.
Why was my MKV refused?
It may be damaged, have no video track, or be copy-protected. Filebender says which, and suggests an audio format such as MP3 if the file only has sound.
How long will it take?
A copy takes seconds. Encoding again takes longer the longer and sharper the video is. Progress shows as it goes, and if you close the page, opening it again picks the conversion back up.
Is Filebender free?
Yes, with a free account: 20 files every day (up to 2 of them videos), each up to 500 MB, with no watermark and no ads. Make the account with Google or your email address. Files converted on your device count the same way as the rest. If you need more, a Day, Week or Month Pass is one payment that never renews; see the Pricing page.
What happens to my files?
It depends on the file. Pictures your browser can convert itself, and everything you do with the PDF tools, from merging and splitting PDFs to putting photos into one, are handled on your device and never leave it, unless you choose to send a file to Filebender's servers. They still need your account: Filebender receives only their type and size, to count them against your plan like any other file. Everything else is converted on Filebender's servers on Google Cloud and deleted an hour after the conversion finishes, or straight away when you press “Delete files now”. Nobody looks at your files, and they're never used for anything else.