Infinity — Click to copy
The infinity symbol ∞ represents endlessness — in math, philosophy, tattoos, and jewelry. Here’s how to type it on any device.
Quick Reference
| Symbol | ∞ |
|---|---|
| Name | Infinity |
| Windows | Alt + 236 |
| Mac | Option + 5 |
| Unicode | U+221E |
| HTML | ∞ |
What Is the Infinity Symbol?
∞ represents infinity — something endless, unlimited, boundless. Used in mathematics, philosophy, physics, tattoos, and jewelry designs.
How to Type ∞ on Windows
Alt code: Alt + 236 (number pad).
Emoji panel: Win + . > “infinity”.
How to Type ∞ on Mac
Option + 5. One of the easiest Mac symbol shortcuts!
How to Type ∞ in Word & Office
Type 221E then Alt+X. Or Insert > Symbol.
How to Type ∞ in Google Docs
Insert > Special characters > search “infinity”.
How to Type ∞ on Mobile
iPhone: 123 > #+= > find ∞.
Android: ?123 > symbols > ∞.
How to Type ∞ in HTML
Use ∞ or ∞.
Troubleshooting
1. Alt+236 needs number pad.
2. Mac Option+5 is the easiest way.
3. Copy ∞ from the top of this page.
FAQs
Alt code for ∞?
The Alt code is 236. Hold Alt, type 236 on the numeric keypad with Num Lock on, then release Alt.
Mac shortcut?
Press Option + 5 on a Mac — one of the easiest symbol shortcuts to remember. The ∞ appears instantly.
Unicode?
The Unicode code point is U+221E. In HTML you can write it as ∞ or ∞.
HTML?
Use the named entity ∞ in your HTML. The decimal ∞ works exactly the same in every browser.
Who invented the symbol?
The English mathematician John Wallis introduced ∞ in 1655 in his work De Sectionibus Conicis. It has represented infinity ever since.
In Word?
Type 221E then press Alt+X and Word converts it to ∞. Or use Insert > Symbol to find it.
On iPhone?
On iPhone, tap 123 then #+= and look for ∞ on the symbols page. On Android, open the symbols keyboard (?123) and find it there.
Is it just a sideways 8?
It looks like one, but no — ∞ (U+221E) is its own character with its own meaning. A sideways digit 8 would not carry the infinity semantics in math or code.
Copy-paste safe?
Yes, ∞ is supported by virtually all fonts and platforms. Copy it from this page whenever a shortcut is inconvenient.
More math symbols?
Yes — the Symbol Picker has a full Math category with ±, ×, ÷, √, and ∑. Browse it for the complete set.
Conclusion
Alt+236 / Option+5. Code: ∞.
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