Micro symbol
Tap to copy µ, or learn how to type it on Windows, Mac and phones.
U+00B5
Micro symbol and related symbols
Click a symbol to copy it, or read across for the shortcut.
| Symbol | Name | Code | HTML | Windows | Mac | LaTeX |
|---|---|---|---|---|---|---|
| Micro sign | U+00B5 | µ | Alt + 230 | Option + M | \mu | |
| Greek small letter mu | U+03BC | μ | \mu | |||
| Greek capital letter mu | U+039C | Μ |
Meaning of µ
The micro sign µ means one millionth, as in µm (micrometer) or µg (microgram). There are two characters: the micro sign (U+00B5) and the Greek letter mu (U+03BC). They look the same.
Common uses: science, medicine labels and engineering units.
- Unicode name
- Micro Sign
- Code point
- U+00B5
- Windows
- Alt + 230
- Mac
- Option + M
Typing µ on any device
Copy and paste
Use the box at the top of the page for µ, or the table for its relatives.
Windows
Hold Alt and type 230 on the number pad, then let go of Alt. In Word, type 00B5 and press Alt + X. Outside Word, open the emoji and symbols panel with Windows key + period.
Mac
Press Option + M. The Character Viewer (Control + Command + Space) finds any symbol by name.
iPhone and Android
Copy it from this page, or set up a text replacement in your keyboard settings so a short code like ;sym turns into the symbol.
HTML
Use µ or µ.
LaTeX
Use \mu in math mode.
Questions people ask
How do I type µ on a keyboard?
On Windows, hold Alt and type 230 on the number pad. On a Mac, press Option + M.
What is the Unicode code point for µ?
U+00B5, named MICRO SIGN in the Unicode standard.
What does µ mean?
The micro sign µ means one millionth, as in µm (micrometer) or µg (microgram). There are two characters: the micro sign (U+00B5) and the Greek letter mu (U+03BC). They look the same.
Where is µ used?
Science, medicine labels and engineering units.
More symbols
Updated November 13, 2026