Infinity
Part of Math Symbols
On Windows, hold Alt and type 236 on the numeric keypad to insert infinity.
- Alt code
- Alt+236
- HTML entity
- ∞
- Unicode
- U+221E
About this symbol
The English mathematician John Wallis introduced ∞ for infinity in 1655. He never explained his choice; one suggestion is that he adapted an old Roman form of the numeral for 1,000, which was also used to mean “a great many”.
The curve itself is called a lemniscate, from the Latin for a ribbon.
Unicode facts
- Official name
- INFINITY
- Type
- Maths symbol
- Unicode block
- Mathematical Operators
- Unicode group
- Miscellaneous mathematical symbol
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.