ONETOC File Type

- The quick facts

What are ONETOC files and how to open them

Are you having problems opening an ONETOC 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 ONETOC file?

The ONETOC file extension indicates to your device which app can open the file. However, different programs may use the ONETOC file type for different types of data.

While we do not yet describe the ONETOC file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.

We are continually working on adding more file type descriptions to the site, so if you have information about ONETOC files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!

How to open ONETOC files

Important: Different programs may use files with the ONETOC file extension for different purposes, so unless you are sure which format your ONETOC 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 ONETOC openers which you will find listed below.

Various apps that use files with this extension

These apps are known to open certain types of ONETOC files. Remember, different programs may use ONETOC 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

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