Empty Set
The empty set (∅) sits at code point U+2205 in Unicode. It belongs to the math family and pastes as plain text, so it keeps working across documents, messages and web pages. Below you can copy it in one click and grab the exact HTML, CSS and JavaScript codes you need to reproduce it anywhere.
How to type the empty set symbol
- Copy and paste: click the ∅ at the top of this page, then paste with Ctrl+V (Windows) or Cmd+V (Mac). This is the fastest route on any device.
- HTML: write
∅in your markup. - CSS: use
content: "\2205"in a::beforeor::afterrule. - JavaScript: the escape
\u2205produces this character in a string.
Frequently asked questions
How do I copy the empty set symbol?
Click the ∅ above or the copy button and it is placed on your clipboard. Paste it anywhere with Ctrl+V or Cmd+V. It is a real text character, so it works in documents, chats and code.
What is the Unicode code point for empty set?
The empty set has the Unicode code point U+2205. In HTML you can write it as ∅ or ∅.
Does the empty set symbol work everywhere?
In almost every modern app and font, yes. If a font does not include this glyph you may see a placeholder box, but the underlying character U+2205 is still correct and will render in a font that supports it.
Related symbols
Browse the full math symbols hub, or return to the searchable symbol grid.