HTML Entity Detail

HTML Entity - Radical Sign ("square Root")

Radical Sign ("square Root") is a mathematical operators, comparison symbols, and notation characters. This HTML entity enables web developers to display this character reliably across all browsers without encoding issues.

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Symbol preview

√

Unicode

U+221A

HTML entity

√

CSS code

\221A

Usage Examples

Use this HTML entity in mathematical expressions and equations. For example, ≠ for not equal, ≤ for less than or equal, ∞ for infinity.

Related Entities

∞ Infinity Sign ∫ Integral ∂ Partial Differential ² Superscript 2 / Squared ³ Superscript 3 / Cubed

Common Mistakes

⚠️

Mistake: Using sqrt() or the word "root" instead of the √ symbol

Fix: Use √ (√) for square root in mathematical text. The sqrt() notation is programming-specific.

⚠️

Mistake: Forgetting the vinculum (overline) for grouped radicands

Fix: In proper mathematical notation, the square root symbol extends with an overline covering the entire radicand. Simply using √x is acceptable for simple cases.

Radical Sign ("square Root")

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Category: Math Symbol

Unicode	`U+221A`
Hex Code	`√`
HTML Code	`√`
HTML Entity	`√`
CSS Code	`\221A`
Windows Shortcut
Mac Shortcut	`⌥V`

HTML code example

<span>&#8730;</span>

CSS code example

span {
    content : "\221A";
}

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