.RELS File

The rels file extension is related to Microsoft Office and used for Office Open XML format.

It is an international, open standard for word processing documents, presentations, and spreadsheets that can be freely implemented by multiple applications on multiple platforms.

A rels file extension is related to the Microsoft Open Office XML relationships file format.

How to open:

The *.rels files are stored in XML text format and they are viewable in any text editor.

How to convert:

Probably cannot be converted to anything else.