You can copy and paste Infinity symbol in Word, Excel, and PowerPoint or use Infinity symbol alt code. Just click on a symbol to copy. If you want to use the infinity sign in html documents use html code or hex code.
|Copy Infinity Symbol||∞|
|Mac Option Code||Option Key + 5|
These are steps to insert the infinity Symbol in MS Word, Excel, and PowerPoint.
If you are not familiar with ALT codes and want to know more about it, please read the article about How to Use ALT Codes to insert symbols.