Turn MKV videos into 3GP. It is converted in your browser, so the file never leaves your device.
Drop MKV files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop MKV (Matroska) files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
Press Convert. Open Options first if you want to change the defaults. The work happens in this tab and can take a while for large files.
Save the 3GP, or download everything as one ZIP if you converted several files.
The MKV to 3GP converter is part of this page and runs inside your browser. Your videos are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so work starts the moment you press Convert. How long it takes depends on your device and the size of the file.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
MKV does not play on iPhones, in QuickTime or in most browsers and editors. 3GP makes very small files that old phones can play. MKV is at home in films with several audio and subtitle tracks; 3GP is the usual choice for video from older mobile phones.
The defaults suit most files. Under Options you can lower the resolution, trade quality against file size, remove the sound and trim the start and end. This is demanding work for a browser: a long or high-resolution file can take several minutes, and your device does all of it, so keep the tab open.
This pair uses the compatibility engine, ffmpeg built for the browser, because 3GP cannot be written by the browser's built-in codecs. It is a one-off download of about 10 MB that the browser keeps, it is slower than the built-in codecs, and it takes files up to 1 GB.
MKV is an open container that can hold practically any video and audio format plus multiple subtitle tracks. That flexibility is why it is popular for films, and why Apple devices and browsers refuse it.
Opens in VLC, Plex and many TVs; not iPhones, QuickTime or most browsers
MKV converter3GP is a slimmed-down relative of MP4 designed for 3G-era mobile phones, with low resolutions and small files. Old phone videos and MMS clips are usually 3GP.
Opens in Most phones and VLC; desktop players vary
3GP converter| MKVMatroska video | 3GP3GP video | |
|---|---|---|
| Stands for | Matroska | 3GPP multimedia file |
| Type | Video container | Video container |
| Compression | Depends on what is inside | Lossy |
| Usually contains | Almost anything: H.264, HEVC, AV1, several audio and subtitle tracks | H.263 or H.264 video with AMR or AAC audio |
| Introduced | 2002, by the Matroska project | The early 2000s, by the 3rd Generation Partnership Project |
| Opens in | VLC, Plex and many TVs; not iPhones, QuickTime or most browsers | Most phones and VLC; desktop players vary |
| Best for | Films with several audio and subtitle tracks | Video from older mobile phones |
| File extension | .mkv | .3gp, .3g2 |
No. The MKV to 3GP conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
It depends on what is inside the MKV. When its video and audio are already in a form 3GP can hold, they can be carried over without being compressed again. Otherwise they are re-encoded, which costs a little quality. Under Options you can favour quality or a smaller file.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the MKV file, press Convert and save the 3GP. There is nothing to install.
Yes. MKV to 3GP runs on the compatibility engine, which takes files up to 1 GB, and a long clip takes a while because it is slower than the browser's built-in codecs. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.