U+00B5
| OS | Layout | Shortcut |
|---|---|---|
| Windows(you) | Us | AltGr + M |
| Windows | Uk | — |
| Windows | German | AltGr + M |
| macOS | Us | Option + M |
| macOS | Uk | — |
| macOS | German | Option + M |
The micro sign represents the metric prefix micro-, meaning one millionth (10⁻⁶). It resembles the Greek lowercase letter mu.
Used as a unit prefix: µm (micrometer), µg (microgram), µs (microsecond). In statistics, µ represents the population mean.