±
How to Type the plus-minus sign (±)
The plus-minus sign (±) shows a value with a margin of error or tolerance, like 20 ± 2 mm.
The three quick ways
Windows
Alt + 0177
Hold Alt, type the numbers on the numeric keypad, release.Mac
Option + Shift + = (equals)
Press the shortcut — no numeric keypad needed.HTML
±
Or numeric ± · Unicode U+00B1Practice typing it
✓ Nice — that's the plus-minus sign!
When you'll use it
- Measurements & tolerances (5 ± 0.1)
- Statistics (mean ± SD)
- Engineering specs
Frequently asked questions
What is the Alt code for the plus-minus sign? On Windows, hold Alt and type 0177 on the numeric keypad, then release Alt to get ±.
How do I type it on a Mac? Press Option + Shift + = (equals).
What's the HTML code for ±? Use ± or the numeric entity ± (Unicode U+00B1).
No numeric keypad? On a laptop, copy the symbol from this page, use your OS emoji/symbol picker (Windows key + . or Mac Control + Command + Space), or the HTML entity on the web.