You can copy Greek Small Letter Mu by pressing the copy button below. This sign shows the ancient Greek letter My. This is the 12th letter of the Greek alphabet. After the Milesian system, it has the numerical value of 40. The micro symbol is used most for the purpose of a unit of measurement. For example, you can say, “That’s 2μm.” Mathematically speaking, the μ prefix means x10-6. So you have to shift the comma by 6 digits to the left and get the number in the unit without the prefix (referring to the example that would be 0.000002m). If you want to copy the micro symbol, you can do that below using the copy button.