Greek Small Letter Mu

A symbol from the Math Symbols collection. Click the symbol or the button below to copy.

Symbol: μ
Unicode: U+03BC
HTML entity: μ
Category: Math Symbols

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Download Greek Small Letter Mu as a vector SVG or a raster PNG.

PNG size

SVG uses the system font stack — open in any vector editor and convert to outlines if needed. PNGs have a transparent background.

54 of 58 in the math symbols collection

About the greek small letter mu symbol

Commonly identified as the lowercase mu, this Greek script character represents the twelfth letter of the Greek alphabet. It is pronounced as a long m sound, similar to how it appears in ancient and modern texts. While categorized as a letter, it serves a functional role as a primary symbol in various technical contexts where specific quantities or variables require a distinct visual representation.

Outside of its linguistic origins, mu frequently appears in mathematics and science to denote the prefix micro, representing one millionth of a unit. Scientists and engineers use it to express measurements like micrometers or micrograms. It is also an essential notation in statistics for representing the population mean of a data set. Additionally, developers and researchers use the symbol in computer programming and physics to indicate friction coefficients or dynamic viscosity.

How to type Greek Small Letter Mu

Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.

Windows

2 options

In Word / Outlook: type 03BC then press Alt + X.
Anywhere: press Win + . to open the emoji & symbol picker, then search.

macOS

2 options

Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 03BC.
Or: Control + Command + Space opens the Character Viewer — search by name.