Sqrt Symbol Copy and Paste Alt Code Meaning and Uses

Copy the sqrt symbol (√), find Alt codes, Unicode, HTML codes, shortcuts, meaning, and usage examples in one complete easy guide.

The sqrt symbol (√), also known as the square root symbol or radical sign, is a mathematical symbol used to represent the square root of a number. Whether you need to copy and paste the sqrt symbol, find its Alt code, insert it into Microsoft Word, Google Docs, HTML, CSS, LaTeX, or understand its meaning and applications, this guide covers everything in one place.

The most common sqrt symbol is:

√

Simply copy and paste it wherever needed.

Square Root Symbol Copy and Paste

Standard Square Root Symbol (√)

Copy and paste the standard sqrt symbol below:

√

Square Root Text Variations

Here are related root symbols commonly used in mathematics:

Symbol	Name
√	Square Root
∛	Cube Root
∜	Fourth Root
√x	Square Root Expression
ⁿ√x	Nth Root

Copy Square Root Symbol for Mobile and Desktop

The copied symbol works on:

• Windows
• Mac
• Linux
• Android
• iPhone and iPad
• Microsoft Word
• Google Docs
• Excel
• PowerPoint
• Websites and social media platforms

What Is the Sqrt Symbol (√)?

Definition and Meaning

The sqrt symbol represents the mathematical operation of finding a number that, when multiplied by itself, equals a given value.

Example:

√25 = 5

because:

5 × 5 = 25

In mathematics, √ represents the principal square root, meaning the positive square root of a number.

History of the Radical Sign

The square root symbol traces its origins to the Latin word radix, meaning “root.” During the 16th century, mathematicians began using a stylized form of the letter “r” to represent roots. Over time, this notation evolved into the modern radical sign (√) used worldwide today.

Alternative Names of the Square Root Symbol

The sqrt symbol may also be called:

• Radical Sign
• Root Symbol
• Square Root Sign
• Radical Operator
• Principal Root Symbol

Square Root Symbol Codes and Shortcuts

The following codes help you insert the sqrt symbol across different platforms.

Method	Code
Unicode	U+221A
HTML Entity	√
HTML Number	√
CSS Code	\221A
Alt Code	Alt + 251

Unicode

The Unicode value for the sqrt symbol is:

U+221A

HTML Code

Use either of the following:

√

or

√

Both display:

√

CSS Code

Use:

\221A

inside CSS content properties.

Alt Code for Windows

To type the sqrt symbol:

1. Hold the Alt key.
2. Type 251 on the numeric keypad.
3. Release the Alt key.

Result:

√

Mac Keyboard Shortcut

Mac users can insert the symbol through:

1. Control + Command + Space
2. Search “Square Root”
3. Select and insert the symbol

Linux Shortcut

Many Linux distributions support Unicode entry:

1. Press Ctrl + Shift + U
2. Type 221A
3. Press Enter

How to Type the Sqrt Symbol on Any Device

Windows

Methods include:

• Alt + 251
• Character Map
• Copy and paste

Mac

Use:

• Character Viewer
• Unicode tools
• Copy and paste

Android

Most Android keyboards do not include the symbol by default.

The easiest solution is:

• Copy and paste √
• Install a mathematics keyboard app

iPhone and iPad

On iOS devices:

• Copy and paste √
• Use text replacement shortcuts

Microsoft Word

Insert the symbol by:

1. Going to Insert → Symbol
2. Choosing More Symbols
3. Selecting √

You can also type:

221A + Alt + X

Google Docs

1. Click Insert
2. Select Special Characters
3. Search “square root”
4. Insert the symbol

Excel

You can use:

• Symbol menu
• Character Map
• Copy and paste

PowerPoint

PowerPoint supports:

• Symbol insertion
• Unicode entry
• Copy and paste

Common Uses of the Square Root Symbol in Mathematics

Basic Square Root Calculations

Square roots help solve equations involving squares.

Example:

√64 = 8

Pythagorean Theorem

The theorem uses square roots to calculate the length of a triangle’s side:

a² + b² = c²

Quadratic Formula

The sqrt symbol appears in:

x = (-b ± √(b² − 4ac)) / 2a

Geometry Problems

Square roots are commonly used to calculate:

• Distances
• Diagonals
• Side lengths
• Area-related measurements

Statistics and Standard Deviation

The formula for standard deviation includes square roots to measure data spread and variability. More than symbol.

Physics and Engineering

Applications include:

• Motion equations
• Electrical engineering
• Signal processing
• Structural analysis
• Scientific calculations

Properties and Rules of Square Roots

Product Rule

√(ab) = √a × √b

Quotient Rule

√(a/b) = √a ÷ √b

Simplifying Radicals

Example:

√50

= √25 × √2

= 5√2

Rationalizing Denominators

Radicals in denominators are often removed by multiplying by an appropriate radical expression.

Perfect Squares

Number	Square Root
4	2
9	3
16	4
25	5
36	6
49	7
64	8
81	9
100	10

Sqrt Symbol in LaTeX, Markdown and Programming

LaTeX Sqrt Symbol

In LaTeX, use:

\sqrt{x}

Example output:

√x

For cube roots:

\sqrt[3]{x}

Markdown Usage

Most Markdown editors support Unicode symbols directly.

Example:

√25 = 5

You can also use LaTeX syntax in platforms that support MathJax.

Python Sqrt Function

Python uses:

math.sqrt()

Example:

math.sqrt(25)

Output:

5

JavaScript Sqrt Function

JavaScript uses:

Math.sqrt()

Example:

Math.sqrt(25)

Output:

5

Different Types of Root Symbols

Square Root (√)

Represents the second root of a number.

Cube Root (∛)

Represents the third root.

Example:

∛27 = 3

Fourth Root (∜)

Represents the fourth root.

Example:

∜16 = 2

Nth Root Notation

General form:

ⁿ√x

where n represents the root index.

Related Mathematical Symbols

Plus Minus (±)

Represents two possible values.

Infinity (∞)

Represents an unlimited quantity.

Approximately Equal (≈)

Indicates near equality.

Not Equal (≠)

Shows two values are different.

Summation (∑)

Represents the sum of a sequence.

Integral (∫)

Used in calculus for integration.

Pi (π)

Represents the mathematical constant approximately equal to 3.14159.

Conclusion

The sqrt symbol (√) is one of the most important symbols in mathematics and technical fields. It is widely used in algebra, geometry, statistics, physics, engineering, programming, and scientific research. Whether you need to copy and paste the symbol, use its Alt code, insert it into documents, or understand its mathematical meaning, this guide provides a complete reference. Bookmark this page for quick access to the sqrt symbol, Unicode values, keyboard shortcuts, and related mathematical symbols whenever you need them.

FAQs

What does √ mean?

It represents the square root of a number.

How do I type √ on a keyboard?

Use Alt + 251 on Windows or copy and paste the symbol.

What is the Alt code for √?

The Alt code is Alt + 251.

Is √ the same as a radical symbol?

Yes, the square root symbol is a type of radical sign.

How do I insert √ in Word?

Use Insert → Symbol or type 221A followed by Alt + X.

Quick Reference Table for Square Root Symbol

Copy and Paste

Symbol

√

Unicode

Code

U+221A

HTML Entity

HTML

√

Alt Code

Shortcut

Alt + 251

Keyboard Shortcuts

Platform	Shortcut
Windows	Alt + 251
Mac	Control + Command + Space
Linux	Ctrl + Shift + U → 221A
Android	Copy and Paste
iPhone	Copy and Paste