U+00AC
| OS | Layout | Shortcut |
|---|---|---|
| Windows(you) | Us | — |
| Windows | Uk | — |
| Windows | German | — |
| macOS | Us | Option + L |
| macOS | Uk | — |
| macOS | German | — |
| Application | How to insert Not Sign |
|---|---|
| Windows (any app) | Hold Alt and type 0172 on the numeric keypad |
| Microsoft Word | Type 00AC, then press Alt+X |
| Excel / Google Sheets | Use the formula =UNICHAR(172) |
| Google Docs | Insert → Special characters, then search "not sign" |
| HTML | ¬ or ¬ |
| CSS (content property) | content: "\00AC" |
| JavaScript | "\u00AC" |
The not sign is used in logic and programming to represent logical negation.
Used in Boolean algebra (¬P means 'not P'), programming documentation, and mathematical logic.