VIMRC is a file extension for Vim Runtime Configuration files. These files store settings and configuration data for Vim. VIMRC files are plain text files that contain Vim script commands. The commands run when Vim starts and control how Vim looks and functions. Users often customize VIMRC files to set personal preferences like indentation, colors, mappings, etc.
VIMRC files work on Linux, Mac, and Windows systems. The main program that handles VIMRC files is gVim. Vim and MacVim can also open VIMRC files. In total, over 1300 different file types fall into the Settings file category, which includes VIMRC.
If your VIMRC file does not open, you likely need to update the application used to open it. Make sure to scan any VIMRC files from unknown sources for viruses before opening. The latest version of software that opens VIMRCs is required to support the current VIMRC format.
To open a VIMRC file manually, double click it and select the program to use. gVim, Vim or MacVim should open the file properly. VIMRC files are meant to store settings rather than be accessed directly by users. As such, they likely cannot be converted to other formats.