Windows
Hold Alt and type 0214 on the numeric keypad.
Accents
Copy the character, or use the shortcut that matches your keyboard and app.
All O accentsHold Alt and type 0214 on the numeric keypad.
Option + U, then O
Ctrl + Shift + :, then o — or type 00D6 then Alt + X
Insert → Special characters → O diaeresis
Click the keycap, then paste with Ctrl+V or Cmd+V.
Num Lock on, hold Alt, type 0214, release Alt.
Use the Unicode, HTML, CSS, or JS value below in documents and stylesheets.
U+00D6ÖÖ\00D6\u{00D6}Alt + 0214