ONEPKG File Type

- The quick facts

What are ONEPKG files and how to open them

Are you having problems opening an ONEPKG file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is an ONEPKG file?

An .ONEPKG file is a Microsoft OneNote Package file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open ONEPKG files

Important: Different programs may use files with the ONEPKG file extension for different purposes, so unless you are sure which format your ONEPKG file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 4 different ONEPKG openers which you will find listed below.

Last updated: December 15, 2021

Various apps that use files with this extension

These apps are known to open certain types of ONEPKG files. Remember, different programs may use ONEPKG files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Microsoft OneNoteMicrosoft OneNoteUser submitted
Microsoft OfficeMicrosoft OfficeUser submitted
Microsoft Office Mondo - EnglishMicrosoft Office Mondo - EnglishUser submitted
V-ToolsV-ToolsUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about ONEPKG file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.