What is CUBE file?
A Cube file extension is a mime-type file type that can be opened by any text editor. A Cube file extension is also known as a text document with .cubed as its extension. It can have multiple levels of nested content and references to other files. It is a simple format that can be used on all platforms and on a variety of operating systems. Antaeus has been using the CUBE File Extension since 1996 for its text documents, spreadsheets, presentations, and databases. It was first released as an open source software in 1993 by John Lott Jr., who continued to improve it over the years before releasing the final version in 1996.
CUBE Format details
Software, that convert CUBE files
The easiest way to convert a CUBE file is to save it in a different file format using dedicated software. Below you will find a list of software programs that can handle CUBE files. Open your CUBE file with one of them and save in another file format.