Tap the arrow for Chemistry,Science,Physics keyboard
Spell it, tap it, or draw it. Every output screen below shows the same text — edit or copy from whichever one you're next to.
1 · Type the name (type the symbol for the name)
Write pi, percent (%), and (&), >= then press space or enter.
Plain words and LaTeX-style names both work — anything else is inserted as text.
Standard Unicode Screen
Standard plain text for Word, Docs, and emails.LaTeX Screen
Code formatted for LaTeX documents ($ equations $).Quick Facts
- Symbol:∞
- Name:Infinity
- Unicode:
U+221E - HTML Entity:
∞ , ∞ - LaTeX:
\infty
The Infinity Symbol (∞) in Mathematics & Science
The Infinity symbol (∞), sometimes called the lemniscate, represents a concept of endlessness, limitlessness, or unbounded values. In mathematics, infinity is not a real number but rather a behavior, limit, or cardinality that is larger than any real number. It is widely used in calculus to define limits, in set theory to describe the sizes of infinite sets, and in physics to describe singular points or infinite horizons.
How to Use and Copy the Infinity Sign Online
Copying the Infinity symbol is easy with our tool. Click the Copy button on the display card at the top. You can also write infinity or the LaTeX command \infty, or draw the infinity loop shape (like a horizontal figure 8) on our canvas to search for it.
Calculus and Set Theory Applications
Infinity appears in limits, sums, and infinite sets:
- Limits: $\lim_{x \to \infty} \frac{1}{x} = 0$ represents convergence to zero.
- Infinite Sums: $\sum_{n=1}^\infty \frac{1}{2^n} = 1$ is a convergent geometric series.
- Cardinality: $\aleph_0$ (Aleph-null) represents the size of the set of natural numbers, which is countably infinite.
Explore Other Keyboard Tools
To type more mathematical symbols, constants, and operators, check out our collections: Math symbol keyboard, Physics constants keyboard, Chemistry formulas keyboard, Greek letters keyboard, Spanish accents keyboard, German QWERTZ keyboard, and French accents keyboard.
Frequently Asked Questions (FAQ)
What is the meaning of the Infinity symbol (∞)?
The infinity symbol (∞) represents endlessness or limitlessness in mathematics, physics, and philosophy, denoting a value larger than any real number.
How do I type the Infinity symbol on a computer?
Use Alt + 236 on a Windows numeric keypad, or type "\infty" in LaTeX or Word. On our tool, you can copy it or draw it.
What is the LaTeX code for Infinity?
The LaTeX command for infinity is "\infty".
What is the Unicode and HTML entity for Infinity?
The Unicode is U+221E, and the HTML entity is ∞ or ∞.