.SWDOC File

File extension swdoc is associated with the SymWriter, a symbol-supported word processor for Microsoft Windows operating system used by teachers, writers, students etc.

A .swdoc file stores document written in the document.

How to open:

Use SymWriter to open and edit .swdoc document files.

How to convert:

It is likely that SymWrite supports some kind of export function and allows saving to other document formats.