Omega Symbol Ω
Tap the button to copy the omega symbol, or grab a variant below. The table has its Alt code, HTML entity and Unicode details.
| Copy | Unicode name | Codepoint | HTML | Windows Alt code |
|---|---|---|---|---|
| Greek Capital Letter Omega | U+03A9 | Ω | Alt+234 | |
| Greek Small Letter Omega | U+03C9 | ω | none | |
| Ohm Sign | U+2126 | none | none |
- The omega symbol is Unicode U+03A9 (Greek Capital Letter Omega).
- In HTML, type
Ωto get Ω. - On Windows, hold Alt and type 234 on the numeric keypad.
- On a Mac, press Option+Z.
- It is a single character: it survives copy and paste into any text field and counts as one character against limits.
Capital omega is the last Greek letter and the unit symbol for electrical resistance in ohms. Unicode kept a separate legacy ohm sign U+2126, but the standard itself says to prefer the Greek capital. Lowercase omega denotes angular velocity in physics.