Square Root Symbol
The √ symbol represents the square root of a value in math and related notation.
U+221A
The √ symbol is widely used to show square roots in equations and formulas. You can copy it directly, or use its code forms in HTML, CSS, and JavaScript. It’s also helpful for labeling root-based expressions in documents and designs.
Square Root Symbol Meaning
The √ symbol, known as the square root, indicates the non-negative value whose square equals the expression under the root. In plain text and math markup, it’s typically placed directly before the quantity being rooted, such as √x or √(x+1). In many contexts it functions as a mathematical operator rather than a standalone icon. You may also see √ used informally to express “check” or “success,” but the most recognized meaning is the square root notation used in algebra, calculators, and technical writing. When formatting, keep the operand clear with parentheses if needed.
Common uses
- •Writing math expressions like √x in notes or worksheets
- •Labeling formulas in spreadsheets, reports, and technical documents
- •Rendering root operations in educational content and presentations
- •Designing math-themed UI elements, badges, or icons that indicate “root”
- •Using the symbol in code documentation for expressions involving square roots
Examples
√ Square Root symbol (U+221A)
- √The result is √x.
- √Compute √(x+1) for x = 3.
- √Solve: √(4a) = 2a.
- √Standard deviation uses a square root.
- √We need √25 to get 5.
Variations
Ready to copy
Technical codes
| Unicode | U+221A | |
| HTML Entity | √ | |
| HTML Code | √ | |
| CSS | \221A |
FAQ
What does the Square Root symbol mean?
The √ symbol, known as the square root, indicates the non-negative value whose square equals the expression under the root. In plain text and math markup, it’s typically placed directly before the quantity being rooted, such as √x or √(x+1). In many contexts it functions as a mathematical operator rather than a standalone icon. You may also see √ used informally to express “check” or “success,” but the most recognized meaning is the square root notation used in algebra, calculators, and technical writing. When formatting, keep the operand clear with parentheses if needed.
What is the Unicode code point for √?
The square root symbol √ has Unicode code point U+221A.
How do I write √ in HTML?
Use the HTML entity √.
What is the CSS escape for √?
Use the CSS escape \\221A.
How can I include √ in JavaScript strings?
Use the JavaScript escape \\u{221A}.