Capital Omega Symbol (Ω)
Copy the Capital Omega symbol Ω to your clipboard, and see its Unicode code point, HTML entity, LaTeX command and how to type it on any device.
What does Ω mean?
Capital Omega is the ohm, the SI unit of electrical resistance, named after Georg Ohm. It also denotes solid angle in geometry and the entire sample space in probability theory. Ω is the capital form of Omega, letter 24 of 24 in the Greek alphabet (pronounced oh-MAY-ga). Its lowercase counterpart is ω. In science and maths it is used for: Ohm and solid angle (Ω), angular frequency (ω).
Codes and properties
| Character | Ω |
|---|---|
| Unicode name | GREEK CAPITAL LETTER OMEGA |
| Code point | U+03A9 |
| Decimal | 937 |
| Unicode block | Greek and Coptic |
| HTML entity | Ω · Ω · Ω |
| CSS | \03A9 |
| JavaScript / JSON | \u03A9 |
| Python | \u03A9 or \N{GREEK CAPITAL LETTER OMEGA} |
| UTF-8 bytes | CE A9 |
| LaTeX | \Omega |
How to type Ω
- Copy & paste: press the Copy button above, then paste Ω anywhere — Word, Google Docs, email, chat or code.
- Windows (Word, WordPad, Outlook): type
03A9then press Alt+X. In any app, Win+. opens the symbol panel. - Mac: switch to the Unicode Hex Input keyboard, hold Option and type
03A9; or press Ctrl+Cmd+Space and search “greek capital letter omega”. - Linux (GTK/IBus): press Ctrl+Shift+U, type
03a9, then Space. - HTML:
Ωrenders as Ω. - LaTeX:
\Omegain math mode (amssymb package for some symbols).
Frequently asked questions
What is an ohm (Ω)?
The unit of electrical resistance; one ohm passes one ampere under one volt.
What is Ω in probability?
The sample space — the set of all possible outcomes of an experiment.
How do I type Ω on Windows?
In Microsoft Word type 03A9 and press Alt+X. In any app press Win+. to open the symbol panel, or copy Ω from this page.
What is the HTML code for Ω?
Use Ω or Ω (hex) or Ω (decimal).
What is the LaTeX command for Ω?
Use \Omega in math mode.