∞
Infinity
Infinity • U+221E
Click to Copy Symbol
Symbol Description
The infinity symbol represents an unbounded quantity or endless value.
Primary Uses:
- •Limits in calculus
- •Set theory notation
- •Mathematical analysis
- •Physics equations
Technical Information
Unicode
U+221E
HTML Entity
∞
HTML Code
∞
CSS Code
\221E
Hex Code
∞
Usage Examples
lim(x→∞)
∞ + 1 = ∞
As x approaches ∞
Input Method Guide
Windows Input Methods
1Alt Code
- 1
Make sure Num Lock is enabled
- 2
Hold down the left Alt key
- 3
Type 8734 on the numeric keypad
💡 Use Alt+8734. If Alt code fails, type 221E then press Alt+X in Word, or use Copy & Paste.
- 4
Release Alt key, infinity (∞) will appear
2Unicode (Alt+X)
- 1
Type 221E in the document
- 2
Press Alt + X to convert to the symbol
💡 Alt+X works in Microsoft Word and many Office apps. It is not supported in Notepad and some third-party editors.
3Word Method
- 1
Type 221E then press Alt+X in Microsoft Word
- 2
Alternatively, use Insert > Symbol if Alt+X is unavailable