±

Technical information

Symbol	±
Name	Plus-minus sign
Unicode number	U+00B1
Category	Latin-1 Supplement 2. Latin-1 punctuation and symbols

Description

The Unicode character ±, or U+00B1, is known as the "Plus-Minus Sign". It is part of the "Latin-1 Supplement" block, which includes various characters used in Western European languages. This character falls under the "Symbol, Math" category. Visually, it appears as a plus sign with a minus sign right below it. The Plus-Minus Sign is used in mathematical and scientific contexts to indicate the precision of an approximation, or to denote a value that can be either positive or negative. For example, in "x = 3 ± 2", x could be either 1 or 5. It can also be used to denote a range of values, and in engineering, it represents tolerance levels. The specific usage of the Plus-Minus Sign can depend on the particular conventions of a discipline, but it generally serves as a symbol for positive and negative values or uncertainty.

Encoding

HTML Entity	±
HTML Entity (hex)	±
HTML Entity (named)	±
URL Escape Code	%C2%B1
UTF-8 (hex)	0xC2 0xB1
UTF-8 (binary)	1100001010110001
UTF-16	0x00B1
UTF-32	0x000000B1

Source Code

C, C++, and Java	"\u00B1"
CSS Code	\00B1
JavaScript	"\u00B1"
Perl	\x{00B1}
Python 2	u"\u00B1"
Python 3	\u00B1
Ruby	\u{00B1}

Preview

This Unicode character looks like this ± in sentence and in bold like this ± and in italic like this ±.

CSS Property: font-weight

100

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800

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HTML Forms and Input

input

disabled input

input-group

select

button

Code examples in HTML and CSS

<span>&#177;</span>

span {
    content: "\00B1";
}

The symbol in different fonts

-apple-system

Apple Color Emoji

Arial

BlinkMacSystemFont

Courier New

Georgia

Droid Sans

Helvetica

Noto Sans

Oxygen

Roboto

"Segoe UI"

sans-serif

Segoe UI Emoji

Segoe UI Symbol

system-ui

Times New Roman

Ubuntu

Verdana

±