What is the keyboard shortcut for the square root symbol?

On Mac, press Option+V to type √ directly. On Windows, hold Alt and type 251 on the numeric keypad, or type 221A in Word and press Alt+X. On Linux, press Ctrl+Shift+U, type 221a, then press Enter or Space.

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

The square root symbol (√) is U+221A. The cube root symbol (∛) is U+221B, and the fourth root symbol (∜) is U+221C.

How do I insert the square root symbol in HTML?

Use the named entity √ or the numeric entities √ (decimal) and √ (hex). The cube root and fourth root symbols have no named entity, so use ∛/∛ and ∜/∜ instead.

What is the LaTeX command for a square root?

Use \sqrt{x} for a square root, \sqrt[3]{x} for a cube root, and \sqrt[4]{x} for a fourth root, where x is the expression under the radical.

What is the difference between the square root symbol and the radical sign?

"Square root symbol" and "radical sign" refer to the same character, √ (U+221A). The term "radical" also covers the family of related symbols for cube root, fourth root, and higher-order roots.

Why do the cube root and fourth root symbols not have a named HTML entity?

The HTML5 named character reference list only defines a named entity for the base square root sign (√). Cube root (U+221B) and fourth root (U+221C) were added to Unicode later and only have numeric entities, not named ones.

Square Root Symbol

Name: Square Root Symbol
Availability: InStock
Author: Nham Vu

Click to copy the square root symbol (√), see the cube root and fourth root variants, and get the Alt code, Unicode, HTML entity, and LaTeX for each.

Click the symbol to copy Square root to your clipboard.

Choose a radical symbol

Copy formats for Square root

How to type it by operating system

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Summary

Click to copy the square root symbol (√), see the cube root and fourth root variants, and get the Alt code, Unicode, HTML entity, and LaTeX for each.

How it works

Click the large √ symbol at the top, or any variant card, to copy that character to your clipboard.
Select square root, cube root, or fourth root to switch the active character.
The format panel updates with the Unicode code point, HTML entity, LaTeX command, and CSS content value for the selected character.
The Windows, Mac, and Linux panels show the keyboard method for typing that character on each platform.
Click any format value to copy just that string, such as the LaTeX command or the HTML entity.

Use cases

Paste the square root symbol into math homework, worksheets, or slides.
Insert √ or √ into HTML without breaking encoding.
Grab the LaTeX \sqrt{} command for a formula in a paper or README.
Find the Windows Alt code for square root when Notepad or Word blocks Unicode input.
Type the square root symbol on a Mac with the Option+V shortcut.
Copy the cube root (∛) or fourth root (∜) symbol for higher-order radicals.
Use the CSS content value to render a radical in a ::before/::after pseudo-element.
Look up the Unicode code point for a radical sign used in a formula editor.

Frequently Asked Questions

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