It is possible to convert virtual machines from VirtualBox to other exchange formats, including Open Virtualization Format packages. However, in order to do so, you will need whole virtual machines, not just some files and you will get multiple output files, each for individual purposes.
Convert VirtualBox settings to Open Virtualization Format Package.
We found 3 software records in the database related to .vbox to .ovf file format conversion.
Microsoft Windows software - convert vbox to ovf on Windows
A multi-platform x86 virtualization software package
Convert from vbox file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned vbox to ovf. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert vbox to ovf on OS X
Free open-source x86 virtualization software package for Mac
Linux/Unix software - convert vbox to ovf on Linux
Free system virtualization platform for Linux operating system developed by Oracle