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Plus-minus sign ± — HTML code and how to type it

The plus-minus sign ± is ± in HTML and U+00B1 in Unicode. Copy any form below, or type it with Alt + 0177 on Windows.

Updated

Character±
HTML named entity±
HTML decimal±
HTML hex±
UnicodeU+00B1
CSS content"\00B1"
JavaScript"\u00B1"
URL encoded%C2%B1
UTF-8 bytesC2 B1

When to use it

Shows a tolerance or margin of error: 5 ± 0.2 mm.

In HTML, CSS and JavaScript

<p>&plusmn;</p>           <!-- or the character itself in a UTF-8 page -->

.note::before { content: "\00B1"; }

const s = "\u00B1";

In a page saved as UTF-8 (the default today) you can paste the character directly; the entity is only needed when it must survive a non-UTF-8 system. Encode or decode whole texts with the HTML Entity Encoder.

How to type plus-minus sign

  • Windows: hold Alt and type 0177 on the numeric keypad.
  • Mac: Option + Shift + = (US keyboard layout).
  • Linux: Ctrl + Shift + U, then B1 and Enter.
HTML Entity EncoderEscape < > & " so text is safe to show in HTML, convert accents and symbols to named or numeric entities, or decode entity-filled HTML back to plain text.
Open the tool

Frequently asked questions

What is the HTML code for the plus-minus sign?
&plusmn; (named), &#177; (decimal) or &#xB1; (hex). All three produce the same character.
What is the Unicode for the plus-minus sign?
U+00B1. In CSS write "\00B1" and in JavaScript "\u00B1".
How do I type the plus-minus sign on a keyboard?
On Windows hold Alt and type 0177 on the numpad. On a Mac press Option + Shift + =.