How to Type Infinity Symbol ∞
Keyboard shortcuts for Windows, Mac, Chromebook, iPhone & Android. Type or copy the infinity sign instantly.
Infinity & Math Symbols
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The infinity symbol ∞ represents endlessness and is used in mathematics, physics, philosophy, and as a popular design element in social media bios, tattoos, and branding. Its mathematical origin is the lemniscate, introduced by John Wallis in 1655.
This guide shows you how to type ∞ on every platform: Windows, Mac, Chromebook, iPhone, Android, and Linux. We cover alt codes, keyboard shortcuts, Unicode input, and the fastest copy-paste method.
Whether you need ∞ for a calculus equation, a social media bio, or a design project, all symbols on this page are pure Unicode text that works everywhere.
Infinity Symbol FAQ
The alt code for ∞ is Alt+236. Hold Alt, type 236 on the numeric keypad, then release Alt. Num Lock must be enabled. This works in all Windows applications.
Press Option+5 on Mac to type ∞ directly. This keyboard shortcut works in all Mac applications — no Character Viewer or special setup needed.
The Unicode code point for ∞ is U+221E (INFINITY). In HTML, use ∞ or ∞. In URL encoding, it's %E2%88%9E. The infinity emoji ♾️ is a separate character at U+267E.
Yes! Both ∞ (text) and ♾️ (emoji) work in Instagram bios, captions, and comments. The text version ∞ is more compact and consistent across devices.
In mathematics, ∞ represents a quantity without bound or limit. It's used in calculus (limits, integrals), set theory (cardinality of infinite sets), and analysis. It's not a number but a concept representing unboundedness.
In Google Docs, go to Insert → Special Characters, then search for 'infinity'. You can also copy ∞ from this page and paste it with Ctrl+V (or Cmd+V on Mac).