What is the alt code for the infinity symbol?

The Alt code for the infinity symbol is Alt 236. To create an infinity symbol, ensure the Num-Lock key is enabled on the keyboard, then hold down the Alt key and type "236" on the Num-Lock keypad.

Originally designed for IBM computers, Alt codes were intended to allow the user to hold the Alt key and enter a decimal value on the Num-Lock keypad to instruct the computer to enter a character based on a table of values known as code page 437, which included characters such as accented letters, icons and Greek letters. While Microsoft later tried to use a different code page for Windows, the company decided to include code page 437 for Western computers due to the large volume of users who were familiar with it.