Mu Symbol µ
Tap the button to copy the mu symbol, or grab a variant below. The table has its Alt code, HTML entity and Unicode details.
| Copy | Unicode name | Codepoint | HTML | Windows Alt code |
|---|---|---|---|---|
| Micro Sign | U+00B5 | µ | Alt+0181 | |
| Greek Small Letter Mu | U+03BC | μ | none |
- The mu symbol is Unicode U+00B5 (Micro Sign).
- In HTML, type
µto get µ. - On Windows, hold Alt and type 0181 on the numeric keypad.
- On a Mac, press Option+M.
- It is a single character: it survives copy and paste into any text field and counts as one character against limits.
The micro sign prefixes units to mean one millionth: µm, µg. Unicode has both this legacy micro sign and the Greek letter mu proper; they look identical in most fonts, and the micro sign is what Alt codes and the Mac shortcut produce. In statistics mu stands for the population mean.