Square Root

A symbol from the Math Symbols collection. Click the symbol or the button below to copy.

Math Symbols collection
Symbol
Unicode
U+221A
HTML entity
√
Category
Math Symbols

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Download Square Root as a vector SVG or a raster PNG.

SVG uses the system font stack — open in any vector editor and convert to outlines if needed. PNGs have a transparent background.

22 of 58 in the math symbols collection

About the square root symbol

Representing the radical sign, the √ symbol is most commonly referred to as the square root. In spoken language, it is typically read as "the square root of" or "radical" when it precedes a number. It belongs to the Mathematical Operators block and is categorized as a common script character used globally to denote the operation of finding a number that, when multiplied by itself, equals the specified value.

In practical application, this symbol appears frequently in educational textbooks, scientific papers, and engineering documentation to express algebraic formulas and geometric calculations. Beyond formal mathematics, it is often repurposed in digital communications and social media as a stylized checkmark to indicate completion or correctness. Programmers may also use it in source code comments or documentation to represent roots when specific LaTeX formatting is unavailable.

How to type Square Root

Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.

Windows

2 options
  1. In Word / Outlook: type 221A then press Alt + X.
  2. Anywhere: press Win + . to open the emoji & symbol picker, then search.

macOS

2 options
  1. Press Option + V on a US keyboard.
  2. Or: Control + Command + Space opens the Character Viewer.

Linux

1 step
  1. Press Ctrl + Shift + U, type 221A, then press Enter or Space.

Copy in every format

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Part of the Mathematical Operators block

square root lives inside the Mathematical Operators Unicode block. Browse every indexed character in Mathematical Operators

Related math symbols

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