One half symbol ½

Windows

Hold Alt and type 0189 on the numeric keypad, then let go of Alt.

In Microsoft Word you can also type 00BD and then press Alt+X.

Mac

Press Control+Command+Space, search for “one half” and double-click ½.

That shortcut opens the Character Viewer, which has every Unicode symbol.

iPhone

Tap Copy above, then touch and hold where you want ½ and tap Paste.

To type it from the keyboard, open Settings › General › Keyboard › Text Replacement, tap +, paste ½ as the Phrase and add a Shortcut.

Android

Tap Copy above, then touch and hold where you want ½ and tap Paste.

To type it from the keyboard in Gboard, open Gboard settings › Dictionary › Personal dictionary, tap +, paste ½ and add a shortcut.

Linux

Press Ctrl+Shift+U, type 00bd, then press Space or Enter. This works in most GTK and IBus apps.

Word and Google Docs

Word: type 00BD, then press Alt+X.

Google Docs: open Insert › Special characters and search for “one half”.