Anyone who's had to learn math or physics in school may have encountered pi at one point. More popularly known and written out in its Greek lowercase letter counterpart, π, it's essentially the ratio ...

That’s it. No matter what app you’re in or font you’re using, the Pi symbol will appear in the place of the letter “P” when you hold down the option key. Then, when you want to type the Pi symbol, ...

How to enter the π (pi) symbol in Windows? Regardless of the version of Windows you use, press the Windows + R keys, type charmap, and press Enter. The Character Map window will appear. In Search, ...