∞
∞ Infinity Symbol
The infinity symbol (∞) represents a value without bound — larger than any number.
Also known as: infinity sign, infinite symbol.
Codes
| Symbol | ∞ | |
| Unicode | U+221E | |
| HTML entity (named) | ∞ | |
| HTML entity (decimal) | ∞ | |
| HTML entity (hex) | ∞ | |
| CSS | \221E | |
| LaTeX | \infty | |
| Windows Alt code | Alt + 236 |
How to type ∞ (Infinity Symbol)
WindowsAlt + 236
Hold Alt and type 236 on the numeric keypad, then release Alt (Alt + 8734 also works).
Mac⌥ + 5
Press Option + 5.
Microsoft Word221E, Alt + X
Type 221E, then press Alt + X to convert it to ∞.
Google Docs
Insert → Special characters, then search “infinity”.
LaTeX\infty
Use \infty in math mode.
Usage
- ∞ represents infinity, a quantity greater than any number.
- In calculus, limits use ∞, e.g. lim(x→∞) 1/x = 0.
- It is also called the lemniscate and is used decoratively for “forever”.