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Not Sign HTML entity ¬
¬ is the HTML entity for Not Sign ¬ (U+00AC). Copy the decimal ¬ and hex ¬ codes plus CSS, JavaScript, Python and URL escapes.
- Entity
¬- Legacy form
¬(no semicolon)- Code point
- U+00AC
- Unicode name
- NOT SIGN
- Block
- Latin-1 Supplement
- Category
- Math symbol (Sm)
- Since
- Unicode 1.1
- Defined in
- HTML 4.01 and HTML5
Codes to copy
| HTML named | ¬Works in HTML; in XML only & < > " ' are predefined. | |
|---|---|---|
| HTML decimal | ¬Works in HTML and XML. | |
| HTML hex | ¬Works in HTML and XML. | |
| CSS | content: "\AC";In a stylesheet, for ::before and ::after. | |
| JavaScript | "\u00AC"Also valid in JSON. | |
| Python | "\u00ac"Python 3 string literal. | |
| Python by name | "\N{NOT SIGN}"Readable alternative using the Unicode name. | |
| URL | %C2%ACPercent-encoded UTF-8 bytes, for a path or query value. | |
| UTF-8 bytes | C2 AC2 bytes. | |
| UTF-16 | 00AC1 code unit, which is what JavaScript length counts. |
When to use it
¬ writes U+00AC (Not Sign), a maths symbol from the Unicode Latin-1 Supplement block, encoded since Unicode 1.1. For more than a symbol or two, MathML, supported in all major browsers since 2023, gives proper maths spacing and layout.
The name dates from HTML 4, so it works in every browser and in old email clients.
Browsers also accept the legacy form ¬ without a semicolon, for compatibility with old pages; new HTML should always end the reference with a semicolon.
More maths operators
±Plus-Minus Sign×Multiplication Sign÷Division Sign⁄Fraction Slash℘Script Capital P∀For All∁Complement∂Partial Differential
All maths operators · Every HTML entity · Encode or decode text
Source: the WHATWG HTML Standard list of named character references and the Unicode Character Database (Unicode 18.0).