U+221B · Mathematical Operators
Cube Root ∛
Cube Root is the Unicode character U+221B (official name “CUBE ROOT”) from the Mathematical Operators block. It belongs to SymbolHero’s math symbols collection. Copy it with the button, or use the codes and keyboard methods below to type it yourself.
UnicodeU+221B
HTML∛
∛U+221B
Character codes
| Unicode code point | U+221B | |
|---|---|---|
| Decimal | 8731 | |
| HTML (hex) | ∛ | |
| HTML (decimal) | ∛ | |
| CSS | \221B | |
| JavaScript | \u221B | |
| Python | \u221B | |
| UTF-8 bytes | E2 88 9B | |
| UTF-16 | 221B | |
| URL-encoded | %E2%88%9B |
Character details
| Official name | CUBE ROOT |
|---|---|
| Unicode block | Mathematical Operators |
| General category | Math Symbol (Sm) |
| SymbolHero category | Math Symbols |
| Emoji | No |
How to type ∛
Windows
- In Microsoft Word or Outlook: type
221Bthen press Alt + X. - Open Character Map (search “Character Map” in Start), tick “Advanced view”, search for “cube root”, then Select and Copy.
Mac
- Press Control + Command + Space to open the Character Viewer, search “cube root”, and double-click the result.
- With the Unicode Hex Input keyboard enabled (System Settings → Keyboard → Input Sources), hold Option and type
221B.
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 “cube root” or enter
U+221B. - HTML:
∛ - Excel / Google Sheets:
=UNICHAR(8731)
Similar math symbols
Questions
What is the Unicode for ∛?
It is U+221B (CUBE ROOT), decimal 8731.
Is there a Windows Alt code for it?
No standard Alt code exists for this character. In Word type 221B then Alt+X, or copy it from this page.
How do I type it on a Mac?
There is no built-in Option shortcut. Use the Character Viewer (Control + Command + Space) and search “cube root”, or copy it from this page.
What is the HTML code?
Use the numeric reference ∛ (or ∛). There is no named entity.