AltKeyCodes

Not Sign Alt Code and Symbol

The Alt code for Not Sign is 170. Hold Alt, type 170 on the numeric keypad, then release Alt. Not Sign also has the Unicode codepoint U+00AC, so you can type it with Alt+172 on Windows, search for U+00AC in macOS's Character Viewer, use ¬ in HTML, or \00AC 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 ⌥L for Not Sign; shortcuts can differ on other layouts. HTML also defines the named entity ¬ for Not Sign, but the numeric form ¬ is safer when compatibility is uncertain.

Codes for this symbol

Copy any value by clicking it.
MethodValue
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 not sign on Windows

  1. Turn Num Lock on so the numeric keypad is active.
  2. Hold the left Alt key.
  3. Type 1 7 0 on the numeric keypad.
  4. Release Alt. The Not Sign character (¬) appears.

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

How to type not sign on macOS

On a US keyboard layout, press ⌥L to insert Not Sign. 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 "Not Sign" and click the character.

How to use not sign in code

  • HTML: or , also
  • CSS: content:"\00AC"; ()
  • Python: \u00AC or chr(0xAC)
  • JavaScript: \u00AC or String.fromCodePoint(0xAC)
  • JSON: "\u00AC"

Frequently asked questions

What is the Alt code for Not Sign?

The legacy Alt code for Not Sign is 170. Hold Alt, type 1 7 0 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+172 not work?

Alt+172 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 Not Sign?

The Unicode codepoint for Not Sign is U+00AC. You can use this value in HTML as ¬, in CSS as \00AC, and in Word with Alt+X.

How do I type ¬ on a Mac?

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

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