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Infinity HTML entity ∞
∞ is the HTML entity for Infinity ∞ (U+221E). Copy the decimal ∞ and hex ∞ codes plus CSS, JavaScript, Python and URL escapes.
- Entity
∞- Code point
- U+221E
- Unicode name
- INFINITY
- Block
- Mathematical Operators
- 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: "\221E";In a stylesheet, for ::before and ::after. | |
| JavaScript | "\u221E"Also valid in JSON. | |
| Python | "\u221e"Python 3 string literal. | |
| Python by name | "\N{INFINITY}"Readable alternative using the Unicode name. | |
| URL | %E2%88%9EPercent-encoded UTF-8 bytes, for a path or query value. | |
| UTF-8 bytes | E2 88 9E3 bytes. | |
| UTF-16 | 221E1 code unit, which is what JavaScript length counts. |
When to use it
The infinity sign, from HTML 4. In CSS, maths functions accept the keyword infinity, which is unrelated to this character.
The name dates from HTML 4, so it works in every browser and in old email clients.
More maths operators
∠Angle√Square Root Sign∡Measured Angle∘Ring Operator∢Spherical Angle∗Asterisk Operator∣Divides∖Set Minus
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).