Micro Sign Alt Code and Symbol

The Alt code for Micro Sign is 230. Hold Alt, type 230 on the numeric keypad, then release Alt. Micro Sign also has the Unicode codepoint U+00B5, so you can type it with Alt+181 on Windows, search for U+00B5 in macOS's Character Viewer, use µ in HTML, or \00B5 in CSS. If your keyboard has no numeric keypad, use the Character Viewer, the HTML entity, or copy the character directly — the Alt key method requires a physical numpad. Copy the Micro Sign character from this page when you need it in a form, chat message or document that does not accept Alt codes. HTML also defines the named entity µ for Micro Sign, but the numeric form µ is safer when compatibility is uncertain.

Codes for this symbol

Copy any value by clicking it.
Method	Value
Legacy Alt code
Alt + decimal
Alt + X hex
HTML named entity
HTML decimal
HTML hex
CSS escape
Python escape
JavaScript escape
UTF-8 bytes
Unicode codepoint
Unicode block
Unicode category

Not available for this symbol: macOS Option shortcut.

How to type micro sign on Windows

Turn Num Lock on so the numeric keypad is active.
Hold the left Alt key.
Type 2 3 0 on the numeric keypad.
Release Alt. The Micro Sign character (µ) appears.

If your keyboard has no numeric keypad, see how to type symbols without a numpad.

How to type micro sign on macOS

There is no direct Option shortcut for Micro Sign. Open the Character Viewer with ⌃⌘Space, search for "Micro Sign" and click the character to insert it.

How to use micro sign in code

HTML: or , also
CSS: content:"\00B5"; ()
Python: \u00B5 or chr(0xB5)
JavaScript: \u00B5 or String.fromCodePoint(0xB5)
JSON: "\u00B5"

Frequently asked questions

What is the Alt code for Micro Sign?

The legacy Alt code for Micro Sign is 230. Hold Alt, type 2 3 0 on the numeric keypad, then release Alt.

How do I type µ without a numpad?

Use the Windows Character Viewer (Win+.), the macOS Character Viewer (⌃⌘Space), an HTML entity such as µ, or copy the character directly from this page.

Why does Alt+181 not work?

Alt+181 only works on a keyboard with a physical numeric keypad. It also requires the application to accept the numeric-keypad input path. Laptops without a numpad need an alternative method.

What is the Unicode for Micro Sign?

The Unicode codepoint for Micro Sign is U+00B5. You can use this value in HTML as µ, in CSS as \00B5, and in Word with Alt+X.

How do I type µ on a Mac?

Open the Character Viewer with ⌃⌘Space and search for the character name or U+00B5, then click it.

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