Batch convert files to MKV online.
Large files from any format are supported.

You can convert to MKV Learn more about MKV from

Video
3g2 Select 3G2 as "from" format 3gp Select 3GP as "from" format 3gp2 Select 3GP2 as "from" format 3gpp Select 3GPP as "from" format amv Select AMV as "from" format avi Select AVI as "from" format flv Select FLV as "from" format mov Select MOV as "from" format mp4 Select MP4 as "from" format mpeg Select MPEG as "from" format mpg Select MPG as "from" format ogg Select OGG as "from" format vob Select VOB as "from" format webm Select WEBM as "from" format wmv Select WMV as "from" format
Audio
aac Select AAC as "from" format ac3 Select AC3 as "from" format flac Select FLAC as "from" format m4a Select M4A as "from" format mid Select MID as "from" format mp3 Select MP3 as "from" format opus Select OPUS as "from" format wav Select WAV as "from" format wma Select WMA as "from" format
Image
avif Select AVIF as "from" format bmp Select BMP as "from" format gif Select GIF as "from" format jpeg Select JPEG as "from" format jpg Select JPG as "from" format png Select PNG as "from" format tif Select TIF as "from" format tiff Select TIFF as "from" format webp Select WEBP as "from" format


What is an MKV file?

File extension .mkv
Category Video file formats
Developed by Matroska
Mime type video/x-matroska

Format description

MKV files are MatrosKa Video files. Like the Russian Matryoshka doll, which contains multiple smaller dolls nested inside each other, the MKV format can contain multiple video, audio, and subtitle tracks inside a single file. This makes it convenient to have one video with a number of audio and subtitle tracks in different languages, all inside a single playable file.

Common questions about converting to MKV

Can I convert to MKV in bulk?

Yes, MConverter supports batch converting to MKV. You can even drag and drop folders to convert to MKV.
Pasting files and folders copied in the clipboard also works: use Ctrl+V.

Can I convert a file to MKV, if its size is 2 GB?

Yes, with MConverter Pro you can convert big files, up to 2 gigabytes each.
The free version lets you convert files up to 100 MB. If you need to convert files over 100 megabytes to MKV, try MConverter Pro. If your files aren’t over 1 GB, then you can use MConverter Plus instead, as it’s cheaper.

Is converting to MKV safe with MConverter?

Yes, we encrypt your connection using industry standards. Plus, your files are only accessible by you. 4 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your files immediately after finishing the conversion by clicking the bin icon.
Join thousands who have trusted us to convert over 11,818,875 files so far.

How long does it take to convert a file to MKV?

For most videos, the wait could be a few minutes or less. However, MConverter also supports converting larger videos, meaning that it could take a while (up to over an hour, for example).

Converter to MKV Rating

4.7
423 votes

Convert other Video files:
MP4 WEBM MOV AVI VOB

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What our customers say

David I.
Dec 20, 2023
I recently stumbled upon MConverter, and let me tell you, it has been an absolute game-changer for me. If you're looking for a versatile, low-cost solution for all your conversion needs, this Swiss Army knife of a tool is a must-have!
I can't recommend MConverter enough. It has become an indispensable tool in my toolkit, streamlining my work and allowing me to focus on what truly matters.
Whitney
Aug 28, 2024
(updated)
This app is exactly what I asked for and is super easy to use. I am not a big time computer wizard so I need apps that do what they say do in a straightforward process. This app does just that! I love it and will continue to use it and will advise others of it as well. Good job to the owners/developers! And, sincere THANK YOU!
Daniel Awesome
Aug 20, 2024
Finally found a converter that did webp to gif without killing the animation. I tried around 12ish different converters and this is the only one that works so far. Hats off to you dev, thank you.
Antonio Hurtado
Mar 16, 2022
The most fantastic, fastest, best and easiest file converter I have ever had installed on my mobile. You deserve all the praise possible, more than happy, I am super grateful, I will always be grateful to you for this super fantastic application. This super fantastic app has literally saved my life, now I can read novels and books in any format, including pdf, which has very small print, in epub format 🌟🌟🌟🌟🌟 Thank you very much👏👍🤝😊❤️
matt32
Apr 6, 2023
AMAZING! This is the perfect file converter! The first thing I used it for was to convert WMV files to MP4 and it worked flawlessly. I then realized it supports all kinds of formats and is basically unlimited. The UI is very user-friendly and super easy to navigate. Incredible app, MConverter!
지나가던인간
Sep 22, 2021
(translated)
Although there are occasional errors, I was very impressed with the efforts of the developers to receive feedback from users and to improve the inconveniences quickly. I will be using it more often in the future.
Scott
Apr 28, 2022
I grab the webm I want to move to my phone and drag it over to the app, I click the type of file I want the webm converted to (mp4), it does it in 10 seconds. easiest 5/5 of my life.

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Can I use it on multiple devices?

Yes, you can use the paid versions of MConverter on all your devices. Just sign in with the same account.

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