U+2229 · Mathematical Operators
Intersection ∩
The intersection symbol represents the elements shared by two sets: A ∩ B contains everything that belongs to both A and B. It is a core symbol in set theory, probability and logic, and it appears in Venn diagrams and in database and search explanations of "AND" conditions.
Character codes
| Unicode code point | U+2229 | |
|---|---|---|
| Decimal | 8745 | |
| HTML named entity | ∩ | |
| HTML (hex) | ∩ | |
| HTML (decimal) | ∩ | |
| CSS | \2229 | |
| JavaScript | \u2229 | |
| Python | \u2229 | |
| UTF-8 bytes | E2 88 A9 | |
| UTF-16 | 2229 | |
| URL-encoded | %E2%88%A9 |
Character details
| Official name | INTERSECTION |
|---|---|
| Unicode block | Mathematical Operators |
| General category | Math Symbol (Sm) |
| SymbolHero category | Math Symbols |
| Emoji | No |
How to type ∩
Windows
- Hold Alt and type 239 on the numeric keypad (Num Lock on), then release Alt. Alt 239 uses the code page 437.
- In Microsoft Word or Outlook: type
2229then press Alt + X. - Open Character Map (search “Character Map” in Start), tick “Advanced view”, search for “intersection”, then Select and Copy.
Mac
- Press Control + Command + Space to open the Character Viewer, search “intersection”, and double-click the result.
- With the Unicode Hex Input keyboard enabled (System Settings → Keyboard → Input Sources), hold Option and type
2229.
iPhone & Android
- Tap Copy at the top of this page, then long-press where you want it and choose Paste.
Docs & web
- Google Docs: Insert → Special characters, then search “intersection” or enter
U+2229. - HTML:
∩or∩ - Excel / Google Sheets:
=UNICHAR(8745)
Examples
- A ∩ B = {2, 4}
- P(A ∩ B) = P(A) · P(B)
- Customers ∩ Subscribers
Good to know
Don’t mix it up: Do not confuse it with the larger ⋂ (U+22C2, N-ARY INTERSECTION), which is used to intersect a whole family of sets.
Tip: On Windows, hold Alt and type 239 on the numeric keypad; in HTML, use ∩.
Display: the character itself is always the same code point, but its shape comes from the font on the device showing it. If you see an empty box, the font lacks this glyph—the text is still correct.
Similar math symbols
Questions
What is the Unicode for ∩?
It is U+2229 (INTERSECTION), decimal 8745.
Is there a Windows Alt code for it?
Yes: Alt 239 on the numeric keypad.
How do I type it on a Mac?
There is no built-in Option shortcut. Use the Character Viewer (Control + Command + Space) and search “intersection”, or copy it from this page.
What is the HTML code?
Use the named entity ∩ or the numeric reference ∩.