Square Root Symbol (√)
HTML entity for the square root symbol (√). Learn how to use √ or √ in HTML for mathematical notation and educational content.
Math
√
Square Root Symbol
All Formats
| Format | Value |
|---|---|
| Character | √ |
| HTML Entity | √ |
| HTML Code (Decimal) | √ |
| Unicode | U+221A |
| CSS Content | \221A |
| Category | Math |
About Square Root Symbol
The square root symbol (√) is a mathematical operator that indicates the principal square root of a number. It is essential for displaying mathematical formulas, scientific calculations, and educational content on the web.
In HTML, insert this symbol using √, √, or √. The named entity √ is well-supported across all modern browsers. Note that the HTML entity represents only the radical sign itself; for complex expressions with a vinculum (the bar extending over the radicand), you may need MathML or CSS styling.
The square root symbol is part of the Mathematical Operators Unicode block. It renders as the familiar checkmark-like radical sign. For cube roots and other nth roots, there is no dedicated HTML entity, but you can combine the radical with a superscript number using CSS or the <sup> element.
In CSS, use "\221A" with the content property for pseudo-element insertion. The square root symbol is commonly needed in calculator applications, math tutoring websites, and scientific documentation. Screen readers typically announce it as "square root" or "radical," providing good accessibility.
Usage Examples
<!-- Using named entity -->
<p>This is the Square Root Symbol: √</p>
<!-- Using numeric code -->
<p>This is the Square Root Symbol: √</p>
<!-- Using the character directly (UTF-8) -->
<p>This is the Square Root Symbol: √</p>
<!-- In CSS -->
.icon::before {
content: "\221A";
}FAQ
What is the HTML entity for Square Root Symbol?
The Square Root Symbol (√) can be inserted using the named entity √, the numeric code √, or by pasting the character directly in a UTF-8 document.
How do I use √ in CSS?
In CSS, use the content property with the value "\221A". For example: content: "\221A";
What is the Unicode code point for Square Root Symbol?
The Unicode code point for Square Root Symbol is U+221A. This is the universal identifier for this character across all platforms and programming languages.
Try It in the HTML Entity Tool
Use our HTML Entity Encoder & Decoder to encode and decode HTML entities, convert between named, numeric, and hex formats, and explore the full entity reference table.