What is the Unicode code point for the cube root symbol?

The cube root symbol (∛) is U+221B in the Unicode Mathematical Operators block, decimal 8731.

What is the keyboard shortcut for the cube root symbol?

There is no classic Alt code for cube root. On Windows, type 221B in Word or Outlook then press Alt+X. On Mac, open Character Viewer with Control+Command+Space and search "cube root". On Linux, press Ctrl+Shift+U, type 221b, then press Enter or Space.

How do I insert the cube root symbol in HTML?

Use the numeric entities ∛ (decimal) or ∛ (hex). Cube root has no named HTML entity, unlike the square root sign, which has √.

What is the LaTeX command for a cube root?

Use \sqrt[3]{x} in math mode, where x is the expression under the radical. It ships with base LaTeX, no extra package needed.

What is the difference between the cube root symbol and the square root symbol?

The square root symbol (√, U+221A) denotes a second root and has its own named HTML entity, √. The cube root symbol (∛, U+221B) denotes a third root and was added to Unicode later, so it only has numeric HTML entities.

Cube Root Symbol

Click to copy the cube root symbol (∛) and get its Unicode code point, HTML entity, and LaTeX code.

Click the symbol to copy the cube root sign to your clipboard.

Copy formats for the cube root symbol

How to type it by operating system

Windows

No classic Alt code. In Word or Outlook, type 221B then press Alt+X.

Mac

No direct key shortcut. Open Character Viewer (Control+Command+Space) and search "cube root".

Linux

Press Ctrl+Shift+U, type 221b, then press Enter or Space.

Related root symbols

√

Square root symbol

U+221A

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Summary

This tool gives you the cube root symbol (∛) ready to copy, with its Unicode code point, HTML entities, and LaTeX command shown side by side. It also covers how to type the symbol on Windows, Mac, and Linux, and links out to the square root and fourth root symbols for related radical notation.

How it works

Click the large ∛ symbol at the top, or the "Copy Symbol" button, to copy the character to your clipboard.
The format panel below lists the Unicode code point, HTML decimal entity, HTML hex entity, LaTeX command, and CSS content value.
Click any row in the format panel to copy just that value, such as the LaTeX command or the hex entity.
The Windows, Mac, and Linux panels show the keyboard method for typing ∛ on each platform.
Use the related symbols cards to jump to the square root symbol or copy the fourth root symbol.

Use cases

Paste the cube root symbol into math homework, worksheets, or slides.
Insert ∛ or ∛ into HTML without breaking encoding.
Grab the LaTeX \sqrt[3]{x} command for a formula in a paper or README.
Find the Windows method for typing cube root when Word or Notepad blocks Unicode input.
Add the CSS content value to a ::before/::after pseudo-element that needs a radical glyph.
Look up the Unicode code point for cube root used in a formula editor or font check.

Frequently Asked Questions

Last updated: 2026-09-09 · Reviewed by Nham Vu