Use the to open the emoji/symbol picker and search for "half."
Since most modern keyboards lack a dedicated physical "1/2" key, you can use these shortcuts to produce the symbol: 1/2 Key
: Press Option + Shift + 1 to type the fraction slash, or use the Character Viewer ( Control + Command + Space ) to search for and insert "half". Windows : Hold Alt and type 0189 on the numeric keypad. Use the to open the emoji/symbol picker and search for "half