.ONE File

File extension one is associated with Microsoft OneNote, an easy-to-use note-taking and information-management program in the Microsoft Office system from version 2007 with which you can capture your thoughts and ideas in electronic notebooks, where you can easily organize, search, and share them.

The one files contain mainly saved text notes, but may also include objects pasted from other applications, such as images, drawings or audio/video clips.

MIME type used for OneNote *.one files:
application/onenote

Files with one extension can found as data files from OneNote, personal information management program from Microsoft Office tool. A one file can contain various types of information, such as text notes, images, video clips etc.

How to open:

Use Microsoft OneNote, which is a part of Microsoft Office Suite to open the *.one files.

How to convert:

Microsoft OneNote is able to export notes into PDF or XPS (XML Paper Specification) file formats.