Omega symbol
Tap the box to copy Ω. Below: what it means and every way to type it.
U+03A9
Omega symbol and related symbols
Click a symbol to copy it, or read across for the shortcut.
| Symbol | Name | Code | HTML | Windows | Mac | LaTeX |
|---|---|---|---|---|---|---|
| Greek capital letter omega | U+03A9 | Ω | Alt + 234 | Option + Z | \Omega | |
| Greek small letter omega | U+03C9 | ω | \omega | |||
| Greek capital letter omega | U+03A9 | Ω | Alt + 234 | Option + Z | \Omega | |
| Inverted ohm sign | U+2127 | ℧ |
About the omega symbol
Capital Ω is the unit symbol for the ohm, the unit of electrical resistance. Ω (U+2126) is the dedicated ohm sign; most fonts draw it the same as the Greek letter.
Common uses: electronics, physics and end of something (alpha and omega).
- Unicode name
- Greek Capital Letter Omega
- Code point
- U+03A9
- Windows
- Alt + 234
- Mac
- Option + Z
Typing Ω on any device
Copy and paste
Tap the Ω above or any symbol in the table. It goes straight to your clipboard.
Windows
Hold Alt and type 234 on the number pad, then let go of Alt. In Word, type 03A9 and press Alt + X. Outside Word, open the emoji and symbols panel with Windows key + period.
Mac
Press Option + Z. Or press Control + Command + Space to open the Character Viewer and search for it.
iPhone and Android
Phone keyboards rarely show Ω. Copy it once, then save it as a text shortcut (Settings, General, Keyboard on iPhone; Dictionary or Text shortcuts on most Android keyboards).
HTML
Use Ω or Ω.
LaTeX
Use \Omega in math mode.
Questions people ask
How do I type Ω on a keyboard?
On Windows, hold Alt and type 234 on the number pad. On a Mac, press Option + Z.
What is the Unicode code point for Ω?
U+03A9, named GREEK CAPITAL LETTER OMEGA in the Unicode standard.
What does Ω mean?
Capital Ω is the unit symbol for the ohm, the unit of electrical resistance. Ω (U+2126) is the dedicated ohm sign; most fonts draw it the same as the Greek letter.
Where is Ω used?
Electronics, physics and end of something (alpha and omega).
More symbols
Updated November 13, 2026