Windows
Hold Alt and type 558 on the numeric keypad.
Accents
Copy the character, or use the shortcut that matches your keyboard and app.
All O accentsHold Alt and type 558 on the numeric keypad.
Character Viewer → o dot above
Type 022E then Alt + X
Insert → Special characters → O dot above
Click the keycap, then paste with Ctrl+V or Cmd+V.
Num Lock on, hold Alt, type 558, release Alt.
Use the Unicode, HTML, CSS, or JS value below in documents and stylesheets.
U+022EȮȮ\022E\u{022E}Alt + 558