Infinity Symbol ∞
Copy the infinity symbol ∞ — Unicode U+221E, HTML entity ∞. Includes Alt code for Windows, Mac shortcut, and variations used in mathematics, science, and design.
All Variations
Symbol Details
| Symbol | Name | Unicode | HTML |
|---|---|---|---|
| ∞ | Infinity | U+221E | ∞ |
| ♾ | Infinity (Emoji / Permanent Paper Sign) | U+267E | ♾ |
| ∞ | Mathematical Infinity (same as above) | U+221E | ∞ |
| ⧞ | Infinity Negated With Vertical Bar | U+29DE | ⧞ |
| ⋯ | Midline Horizontal Ellipsis (infinite sequence) | U+22EF | ⋯ |
| … | Horizontal Ellipsis (ellipsis) | U+2026 | … |
| ∀ | For All (universal quantifier) | U+2200 | ∀ |
| ∃ | There Exists (existential quantifier) | U+2203 | ∃ |
Usage
The infinity symbol (∞) represents the concept of infinity in mathematics and physics, unlimited quantities, endless loops in programming, and eternal or boundless ideas in philosophy and design. It is also popular in jewelry and tattoo design as a symbol of endlessness or eternity.
How to Type
| Platform | Method / Code |
|---|---|
| Windows | Hold Alt and type 236 on the numeric keypad (Num Lock on). Release Alt to insert ∞. |
| Mac / iOS | Press Option+5 to insert the infinity symbol ∞ in any macOS application. |
| HTML Entity | Use ∞ or ∞ in your HTML code to display the infinity symbol. |
| Unicode | U+221E — in Microsoft Word, type 221E then press Alt+X to convert to ∞. |
Platform Compatibility
This symbol renders correctly on all listed platforms.
Frequently Asked Questions
How do I type the infinity symbol on Windows?
Hold Alt and type 236 on the numeric keypad (Num Lock must be on). Release Alt and ∞ appears. In Microsoft Word, you can also type 221E and press Alt+X.
How do I type the infinity symbol on Mac?
Press Option+5. This keyboard shortcut works in virtually all Mac applications including Pages, TextEdit, and Microsoft Word for Mac.
What does the infinity symbol mean in math?
In mathematics, ∞ represents a value larger than any real number. It is used in calculus for limits (as x → ∞), in set theory for infinite sets, in geometry for lines extending without bound, and in expressions like 1/0 = ∞ (in certain contexts).
Is ∞ and ♾ the same symbol?
They look similar but are different Unicode characters. ∞ (U+221E) is the mathematical infinity symbol. ♾ (U+267E) is the 'Permanent Paper Sign' emoji that was also adopted as an infinity emoji. In mathematical contexts, always use ∞ (U+221E).