Diaeresis Alt Code and Symbol

The Alt code for Diaeresis is 0168. Hold Alt, type 0168 on the numeric keypad, then release Alt. Diaeresis also has the Unicode codepoint U+00A8, so you can type it with Alt+168 on Windows, search for U+00A8 in macOS's Character Viewer, use ¨ in HTML, or \00A8 in CSS. If your keyboard has no numeric keypad, use the Character Viewer, the HTML entity, or copy the character directly — the Alt key method requires a physical numpad. On a US Mac keyboard, press ⌥U for Diaeresis; shortcuts can differ on other layouts. HTML also defines the named entity ¨ for Diaeresis, but the numeric form ¨ is safer when compatibility is uncertain.

Codes for this symbol

Copy any value by clicking it.
Method	Value
Legacy Alt code
Alt + decimal
Alt + X hex
macOS Option
HTML named entity
HTML decimal
HTML hex
CSS escape
Python escape
JavaScript escape
UTF-8 bytes
Unicode codepoint
Unicode block
Unicode category

How to type diaeresis on Windows

Turn Num Lock on so the numeric keypad is active.
Hold the left Alt key.
Type 0 1 6 8 on the numeric keypad.
Release Alt. The Diaeresis character (¨) appears.

If your keyboard has no numeric keypad, see how to type symbols without a numpad.

How to type diaeresis on macOS

On a US keyboard layout, press ⌥U to insert Diaeresis. This shortcut assumes a US layout; other layouts may remap it.

If the shortcut does not work on your layout, open the Character Viewer with ⌃⌘Space, search for "Diaeresis" and click the character.

How to use diaeresis in code

HTML: or , also
CSS: content:"\00A8"; ()
Python: \u00A8 or chr(0xA8)
JavaScript: \u00A8 or String.fromCodePoint(0xA8)
JSON: "\u00A8"

Frequently asked questions

What is the Alt code for Diaeresis?

The legacy Alt code for Diaeresis is 0168. Hold Alt, type 0 1 6 8 on the numeric keypad, then release Alt.

How do I type ¨ without a numpad?

Use the Windows Character Viewer (Win+.), the macOS Character Viewer (⌃⌘Space), an HTML entity such as ¨, or copy the character directly from this page.

Why does Alt+168 not work?

Alt+168 only works on a keyboard with a physical numeric keypad. It also requires the application to accept the numeric-keypad input path. Laptops without a numpad need an alternative method.

What is the Unicode for Diaeresis?

The Unicode codepoint for Diaeresis is U+00A8. You can use this value in HTML as ¨, in CSS as \00A8, and in Word with Alt+X.

How do I type ¨ on a Mac?

On a US Mac keyboard, press ⌥U. If that does not work on your layout, open ⌃⌘Space and search for U+00A8.

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