∅

Empty Set Symbol (∅)

Copy the Empty Set symbol ∅ to your clipboard, and see its Unicode code point, HTML entity, LaTeX command and how to type it on any device.

What does ∅ mean?

The empty set symbol ∅ denotes the set with no elements, {}. It should not be confused with the Greek letter phi (φ) or the Danish letter Ø. Its official Unicode name is EMPTY SET.

Codes and properties

Character∅
Unicode nameEMPTY SET
Code pointU+2205
Decimal8709
Unicode blockMathematical Operators
HTML entity∅ · ∅ · ∅
CSS\2205
JavaScript / JSON\u2205
Python\u2205 or \N{EMPTY SET}
UTF-8 bytesE2 88 85
LaTeX\emptyset

How to type ∅

  • Copy & paste: press the Copy button above, then paste ∅ anywhere — Word, Google Docs, email, chat or code.
  • Windows (Word, WordPad, Outlook): type 2205 then press Alt+X. In any app, Win+. opens the symbol panel.
  • Mac (any symbol): switch to the Unicode Hex Input keyboard, hold Option and type 2205; or press Ctrl+Cmd+Space and search “empty set”.
  • Linux (GTK/IBus): press Ctrl+Shift+U, type 2205, then Space.
  • HTML: ∅ renders as ∅.
  • LaTeX: \emptyset in math mode (amssymb package for some symbols).

Frequently asked questions

How do I type ∅ on Windows?

In Microsoft Word type 2205 and press Alt+X. In any app press Win+. to open the symbol panel, or copy ∅ from this page.

How do I type ∅ on a Mac?

Open the Character Viewer with Ctrl+Cmd+Space and search “empty set”, or switch to Unicode Hex Input and hold Option while typing 2205.

What is the HTML code for ∅?

Use ∅ or ∅ (hex) or ∅ (decimal).

What is the LaTeX command for ∅?

Use \emptyset in math mode.

Related symbols

∆Increment∄There Does Not Exist∇Nabla∃There Exists∈Element Of∂Partial Derivative∉Not an Element Of∁Complement

Keep exploring

Reference: Unicode code chart: Mathematical Operators (U+2200–U+22FF)