NFO information files are just specially formatted text files. You cannot exactly convert any .txt file as .nfo file, but you can edit and rename the extension from txt to nfo should you wish it. For this purpose special NFO editors and viewers are your best option.
Convert Simple text file to Information readme text document.
We have found 10 software records in our database eligible for .txt to .nfo file format conversion.
Microsoft Windows software - convert txt to nfo on Windows
One of the many text viewers and editors
Convert from txt 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 txt to nfo. 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.
An alternative text editor
A powerful text and source codes editing tool
A free source code and text editor for Windows
Apple macOS / Mac OS X software - convert txt to nfo on OS X
A sophisticated Mac source code editor for programmers
A text and source code editing software for Mac
The default text editor in Mac OS X
Linux/Unix software - convert txt to nfo on Linux
A sophisticated Linux source code editor for programmers
A text and source code editing software for Linux
Multiplatform software - convert txt to nfo on any platform
A multiplatform high configurable text editor.