What is the Unicode code point for the union symbol?

The union sign is U+222A in the Unicode standard, used in set theory to show the combined elements of two or more sets.

What is the HTML entity for the union symbol?

Use ∪ or the numeric entity ∪ in HTML. Both render as ∪.

How do I type the union symbol in LaTeX?

Use \cup inside math mode, for example $A \cup B$, which renders as A ∪ B. For a union of many sets, use \bigcup, for example $\bigcup_{i=1}^{n} A_i$.

How do I type the union symbol on a Mac?

Open the Character Viewer with Control+Command+Space, search "union", then double-click the symbol to insert it. There is no direct Option key shortcut for this character.

How do I type the union symbol on Windows?

In Microsoft Word, type 222A then press Alt+X to convert it to ∪. Outside Word, use the Character Map app or copy the symbol from a page like this one.

What does the union symbol mean?

It denotes the set union: A ∪ B is the set containing every element that is in A, in B, or in both. It is the counterpart to the intersection symbol, ∩, which keeps only shared elements.

Union Symbol

Name: Union Symbol
Availability: InStock
Author: Nham Vu

Copy the union symbol (∪) and find its Unicode codepoint, HTML entity, LaTeX command, and keyboard shortcut for your platform.

Union Symbol

Click the symbol to copy it

Formats

Character ∪

Unicode U+222A

HTML entity ∪

HTML decimal ∪

LaTeX \cup

CSS escape \222A

JS / JSON escape ∪

Click any row to copy that exact string.

Keyboard Shortcuts

System	Shortcut	Notes
Windows (Word)		Type 222A then press Alt+X to convert it.
Windows (general)		No plain Alt code exists; use Character Map or copy the symbol above.
Mac		Opens Character Viewer; search "union" and double-click to insert.
Linux (GTK)		Type the hex code, then press Enter or Space.
LaTeX		Use inside math mode, for example $A \cup B$.

Try it

Enter two set names to build a ready-to-paste union statement.

∪

A ∪ B

Copied!

Summary

Copy the union symbol (∪) and find its Unicode codepoint, HTML entity, LaTeX command, and keyboard shortcut for your platform.

How it works

Click the large union symbol to copy it to your clipboard.
Or click any format in the list (Unicode, HTML entity, LaTeX, CSS escape) to copy that exact string.
Use the shortcut table to type the symbol directly from your keyboard on Windows, Mac, or Linux.
Paste the symbol anywhere: documents, spreadsheets, code, or chat.

Use cases

Write set union statements in math homework or proofs, such as A ∪ B.
Insert the union symbol into a LaTeX document with \cup.
Show a set union relation in a spec sheet or slide instead of typing "union of".
Add the union symbol to code, CSS content, or HTML without breaking encoding.
Learn the keyboard shortcut so you never need to look it up again.
Copy the correct HTML entity for a web page instead of pasting a raw Unicode character.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu