How to type Not Sign
- Windows: hold Alt, type 0172 on the numeric keypad, release.
- Mac: no dedicated Option-key shortcut; open the Character Viewer with Ctrl+Cmd+Space and search by name.
- HTML:
¬or¬. - Chromebook: Ctrl+Shift+U, type 00AC, then Enter.
Reference
- Unicode name: NOT SIGN
- Code point: U+00AC
- Category: Math & measurement
- Also searched as: not negation logic
Symbol data last reviewed: July 9, 2026.