OneNote can automatically calculate numbers. To use the calculator in OneNote, type the numbers you want to calculate, for instance, 3+3=, and press the Space key after the “ = ” sign.

3. Notegram Notegram is a go-to site for free OneNote templates, offering a variety of templates such as Monthly Calendars, Weekly Planners, Daily Planners, To-Do Lists, Journals, and Checklists.

Until now, OneNote was part of certain Office 365 and Office 2013 editions on the PC, but not the Mac. However, there was a free OneNote app for iOS -- both iPhone and iPad -- and for Windows Phone.