∅

Empty Set Symbol ∅

∅ is EMPTY SET (U+2205) in the Mathematical Operators block.

U+2205 · EMPTY SET

How to type ∅

Word (Windows)2205 → Alt + XType the code, then press Alt + X.
MacEdit › Emoji & Symbols (Control + Command + Space), then searchSearch for “empty set”.
iPhone / AndroidCopy it from this page and paste. Most phone keyboards do not have it.

∅ Unicode and HTML codes

Unicode nameEMPTY SET
Code pointU+2205
Unicode blockMathematical Operators
HTML entity∅
HTML numeric∅
CSScontent: "\2205";
JavaScript"\u2205"
Python"\u2205" · "\N{EMPTY SET}"
UTF-8 bytesE2 88 85

Related symbols: Math

×Multiplication Sign
÷Division Sign
≠Not Equal To
≈Almost Equal To
≡Identical To
≤Less-Than or Equal To
≥Greater-Than or Equal To
±Plus-Minus Sign
∞Infinity
√Square Root
∑Summation
∫Integral
∂Partial Differential
∆Increment (Delta)
∇Nabla
∈Element Of
∉Not an Element Of
⊂Subset Of
∪Union
∩Intersection
∧Logical And
∨Logical Or
¬Not Sign
∀For All

FAQ

How do I type ∅ on Windows?

There is no Alt code for it. In Word, type 2205 and press Alt+X, or copy it from this page.

How do I type ∅ on a Mac?

Press Control + Command + Space and search for “empty set”, or copy it from this page.

What is the HTML code for ∅?

∅ or ∅. In CSS use content: "\2205".

The exact look of a symbol depends on the font and device.