Most Mac programs allow you to open the Character Palette by selecting Edit → Special Characters. Macintosh: You can insert the heart symbol using the Mac OS X Character Palette. For example, you should see 1, 2, and 3 printed on the J, K, and L keys. If your keyboard doesn't have a numeric keypad, you can press the Num Lock key and use the keys that have small numbers printed on them. Just make sure you use the numeric keypad, since it won't work if you use the numbers above the letters. You can discover other Alt codes by holding down Alt and pressing one to four numbers in sequence. For example, Alt+1 inserts a smiley face (☺) and Alt+0162 inserts a cent symbol (¢). Alt+3 is an example of a Windows Alt code, which is an easy way to enter hundreds of special characters in Windows. Windows: Press and hold the Alt key, then press 3 on the numeric keypad on the right side of your keyboard. So how do you type one? Just follow these simple instructions for Windows and Macintosh computers. But there is no heart symbol key on the keyboard. Answer: The heart symbol (♥) is a special character that is commonly seen in online chat and social networking websites like Facebook.