USA File

A file with the .USA extension is a file known as Microsoft Office headers. It belongs to the Data Files category. This format is associated with Microsoft.

The reliable way to open a .USA file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.

We are still gathering the list of programs that open .USA files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.