Windows
Hold Alt and type 470 on the numeric keypad.
Accents
Copy the character, or use the shortcut that matches your keyboard and app.
All U accentsHold Alt and type 470 on the numeric keypad.
Option + U, then U
Ctrl + Shift + :, then u — or type 01D6 then Alt + X
Insert → Special characters → u diaeresis macron
Click the keycap, then paste with Ctrl+V or Cmd+V.
Num Lock on, hold Alt, type 470, release Alt.
Use the Unicode, HTML, CSS, or JS value below in documents and stylesheets.
U+01D6ǖǖ\01D6\u{01D6}Alt + 470