Ohm Sign Letter
The Ω (Ohm Sign) symbol represents electrical resistance measured in ohms.
U+2126
The Ω symbol, known as the Ohm Sign, is commonly used in electronics and engineering. It’s a typographic character you can copy for equations, labels, and diagrams. This page helps you paste it correctly and find related symbols.
Ohm Sign Letter Meaning
Ω (U+2126), the Ohm Sign, is the standard symbol for the unit of electrical resistance: ohms. You’ll often see it in circuit diagrams, resistor values, and technical labels, such as “220 Ω” or “R = 10 Ω.” In text, it helps communicate electrical measurements clearly without writing out the full unit name repeatedly. Because the character has its own Unicode code point (not just the Greek capital Omega), it’s best to use this specific symbol when you want consistent rendering across fonts and platforms.
Common uses
- •Labeling resistor values (e.g., “1kΩ” or “220 Ω”) in schematics and notes
- •Writing electrical formulas for resistance (e.g., “R = V / I” with Ω units)
- •Designing technical UI text for electronics tools, dashboards, and meters
- •Creating diagrams for STEM worksheets, presentations, and lab documentation
- •Documenting measurements in engineering reports and product specifications
Examples
Ω Ohm Sign | Copy & Use Symbol
- ΩResistance: 100 Ω
- ΩR = 220 Ω
- ΩLoad impedance: 50 Ω
- ΩSpeaker coil: 8 Ω
- ΩMeasured resistance is 1.2 kΩ
Variations
Technical codes
| Unicode | U+2126 | |
| HTML Entity | Ω | |
| HTML Code | Ω | |
| CSS | \2126 | |
| Alt Code | Alt + 8486 | |
| Decimal | 8486 |
How to type Ohm Sign Letter (Ω)
On Windows
Hold Alt and type 8486 on the numeric keypad. In Word, type 2126 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 2126. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 2126, then press Enter or Space.
Anywhere
Copy Ω with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Ohm Sign letter mean?
Ω (U+2126), the Ohm Sign, is the standard symbol for the unit of electrical resistance: ohms. You’ll often see it in circuit diagrams, resistor values, and technical labels, such as “220 Ω” or “R = 10 Ω.” In text, it helps communicate electrical measurements clearly without writing out the full unit name repeatedly. Because the character has its own Unicode code point (not just the Greek capital Omega), it’s best to use this specific symbol when you want consistent rendering across fonts and platforms.
What is the difference between Ω and Ω?
Ω is the Ohm Sign (Unicode U+2126) used for electrical resistance. Ω is the Greek Capital Letter Omega; it may look similar but is not the dedicated unit symbol.
How do I copy the Ω symbol for use in text?
Copy the character directly from this page and paste it into your document, design tool, or code editor. It should render correctly if the font supports it.
What are the HTML, CSS, and JavaScript escapes for Ω?
HTML entity: Ω. CSS escape: \\2126. JavaScript escape: \\u{2126}.
Where is Ω commonly used?
You’ll most often see Ω in electronics for resistor values, resistance units in equations, and technical labels in diagrams and documentation.