Infinity symbol (∞)
U+221E · INFINITY · Unicode 1.1 (1993)
How to type ∞
Windows
Alt code (numeric keypad)
Alt+236
Turn on Num Lock, hold the Alt key, type 236 on the numeric keypad and let go of Alt: ∞ appears.
Uses the old DOS code page 437, which US-English Windows uses for Alt codes without a leading 0; on Windows set to other languages the result can differ.
Word and Outlook: Alt + X
221E Alt+X
Type 221E and press Alt+X right after it: Word turns the code into ∞. Press Alt+X again to turn it back into the code.
Emoji and symbols panel (Windows 10 and 11)
Win+.
Press Win + full stop (.) to open the panel, go to the Symbols tab (Ω) and pick ∞.
No numeric keypad on your laptop? See the other ways in our Alt codes guide.
Mac
Keyboard shortcut (U.S. layout)
⌥ Option+5
Press ⌥ Option+5 to type ∞. This is on the standard U.S. and U.S. English Mac layouts.
Character Viewer
Ctrl+⌘ Cmd+Space
Press Ctrl+⌘+Space (or the Globe key + E), search for “infinity symbol” and click ∞ to insert it.
iPhone
Make a shortcut (Text Replacement)
Turn a short word into ∞ once and type it in any app:
- Copy ∞ from this page.
- Open Settings › General › Keyboard › Text Replacement and tap +.
- Paste ∞ as the Phrase and type a Shortcut, for example ;infinity.
- Now type ;infinity anywhere: the keyboard suggests ∞.
Android
Make a shortcut (Gboard personal dictionary)
Teach your keyboard a short word that turns into ∞:
- Copy ∞ from this page.
- Open Gboard settings › Dictionary › Personal dictionary, choose your language and tap +.
- Paste ∞ as the word and type a shortcut, for example ;infinity.
- Type ;infinity in any app and tap ∞ in the suggestions.
Linux
Unicode input
Ctrl+Shift+U 221e Enter
Press Ctrl+Shift+U, type 221e and press Enter or Space. Works in GTK apps and with IBus (GNOME, Ubuntu, Fedora).
What ∞ means and how it is used
The infinity sign ∞ was introduced by the English mathematician John Wallis in 1655. It means without bound, as in limits (x → ∞), and has become a popular symbol of endless love and friendship in tattoos and bios. On a Mac press Option+5. The emoji ♾️ is a different character, originally the 'permanent paper' sign.
Infinity symbol (∞) is the Unicode character U+221E, officially called INFINITY. It is in the Mathematical Operators block and has been part of Unicode since version 1.1 (1993).
People also call it or search for it as: infinity, sign.
On this site it is part of the math (148 symbols), next to π √ ± × ÷.
Codes for HTML, CSS and JavaScript
Tap Copy next to the code you need.
| HTML entity | ∞ | |
|---|---|---|
| HTML decimal | ∞ | |
| HTML hex | ∞ | |
| CSS | content: "\221E"; | |
| JavaScript | \u221E | |
| URL | %E2%88%9E | |
| UTF-8 bytes | E2 88 9E | |
| Unicode | U+221E |
Will it show on my friend's phone?
Very likely yes: ∞ dates from Unicode 1.1 (1993), so every current system has a font for it.
Checking your device…
Names in other languages
What ∞ is called in the 12 languages of this site (Unicode CLDR and our editors). Tap a name to open that language's page.
| Language | Name |
|---|---|
| English | Infinity symbol |
| Português | Símbolo do infinito |
| Español | Símbolo de infinito |
| Italiano | Simbolo infinito |
| Français | Symbole infini |
| Deutsch | Unendlichzeichen |
| Türkçe | Sonsuzluk sembolü |
| Bahasa Indonesia | Simbol infinity (tak terhingga) |
| Polski | Symbol nieskończoności (infinity) |
| Русский | Символ бесконечности |
| 日本語 | 無限大記号 |
| 한국어 | 무한대 기호 |
Related symbols
All Math →Questions people ask
How do I type ∞ on a laptop without a numeric keypad?
On Windows press Win + full stop (.) and pick ∞ in the Symbols tab, or in Word type 221E and press Alt+X. On a Mac press ⌥ Option+5.
How do I type ∞ on an iPhone?
The iPhone keyboard has no key for ∞. Copy it here, then add it in Settings › General › Keyboard › Text Replacement with a shortcut like ;infinity.
What is the HTML code for the infinity symbol?
Use the entity ∞ or the numeric code ∞ (hex ∞). In CSS write \221E, in JavaScript \u221E.
Will ∞ show on every phone?
Very likely yes: ∞ dates from Unicode 1.1 (1993), so every current system has a font for it.