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

There are 2 other file types using
the ONE file extension!

empty - docPointer visual readme document

empty - EdgeCAM licensing data file

Detailed description

Software that open one file

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ONE file extension - Microsoft OneNote document

What is one file? How to open one files?

File type specification:

Microsoft Office file type icon Microsoft Office file type

one file icon: one filetype icon

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:

Updated: November 7, 2023

The default software associated to open one file:

Microsoft OneNote icon

Microsoft Corporation logoMicrosoft OneNote  Microsoft Windows software

Company or developer:
Microsoft Corporation

Application developed by Microsoft and used to create short notes, drawings, audio and video commentaries that can be shared with other users over Internet, or synchronized with OneNote application installed in the portable device. OneNote for desktop computers is distributed with the Microsoft Office suite and Windows 10 system, and also is available for free download.

OneNote for mobile platforms is distributed as stand alone application. Mobile form of OneNote is compatible with Windows Mobile, Windows Phone, iOS and Android mobile operating systems.

Microsoft OneNote for Mac icon

Microsoft Corporation logoMicrosoft OneNote for Mac  Apple macOS / Mac OS X software

Company or developer:
Microsoft Corporation

Microsoft OneNote for Mac is digital notebook application for Apple Mac OS X that allows users to share notes and collaborate with others, across multiple devices. It is able to Capture rich notes for classwork, meetings, or research, create an itinerary and keep track of your travel plans for your next big vacation etc.

Office 365 icon

Microsoft Corporation logoOffice 365  Multiplatform software

Company or developer:
Microsoft Corporation

Office 365 is a subscription-based service that gives users access to several services and apps from Microsoft Office. It is available some types of subscription editions (for Home, Education, Business and Enterprise users) available for Microsoft Windows and Apple macOS and all major mobile platforms.

Help how to open:

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

How to convert:

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

Find conversions from one file:

one to doc

one to docx

one to mht

one to pdf

one to xls

one to xps

Find converter to one file type:

onepkg to one

pdf to one

File identification strings:

HEX code: E4 52 5C 7B 8C D8 A7 4D AE B1 53 78 D0 29 96 D3
ASCII code: .R\{...M..Sx.)

List of software applications associated to the .one file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open one file, edit one file, convert one file, view one file, play one file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting one files.

Software that open one file - Microsoft OneNote document

Programs supporting the exension one on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open one file action.

Microsoft Windows:

Apple macOS / Mac OS X:

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