| Character | ∛ |
| Name | Cube Root |
| Unicode Code Point | U+221B |
| Decimal Value | 8731 |
| Hex Value | 0x221B |
| Category | Math Operators |
| Windows Alt Code | Not available — use copy/paste |
| Word Alt+X Code | 221B + Alt+X |
| Mac Shortcut | Not available — use copy/paste |
| HTML Entity | ∛ |
| HTML Code (Dec / Hex) | ∛ / ∛ |
| CSS Content Code | content: "\221B"; |
| JavaScript Unicode Escape | "\u{221B}" |
Cube Root is a formal mathematical operator or relation symbol used in academic and technical writing — algebra, calculus, logic, or set theory — to express a precise mathematical relationship concisely.
Unicode block: Mathematical Operators (U+2200–U+22FF). This large block standardizes the symbols used across algebra, calculus, logic, and set theory, replacing the inconsistent, often hand-drawn notation used before digital typesetting.
At Unicode code point U+221B (decimal 8731), Cube Root is the 28th of 256 characters cataloged in this category on How To Type Any Symbol. In terms of typing methods, like most characters outside the 0–255 legacy codepage range, it has no dedicated Alt-code or single-key shortcut on Windows or Mac, so copy-paste is the standard, universal method for typing it. Regardless of platform, clicking the copy button above places the exact character on your clipboard, ready to paste into any application that accepts Unicode text.
💡 Good to know: In LaTeX, nearly every math operator has a dedicated command (e.g. \sum, \int, \forall) which is the standard, more reliable way to include it in technical documents rather than copy-paste.
No alt code available — click the copy button above and paste with Ctrl+V.
No dedicated shortcut — click the copy button above and paste with Cmd+V.
Click the symbol above to copy it, then paste anywhere — works on every device and OS.
Use the entity ∛ in your HTML.