Ohm symbol (Ω)
U+2126 · OHM SIGN · Unicode 1.1 (1993)
How to type Ω
Windows
No Alt code
Ω is not in the Windows code pages 1252 or 437, so it has no Alt code. Use one of the methods below or copy it from this page.
Word and Outlook: Alt + X
2126 Alt+X
Type 2126 and press Alt+X right after it: Word turns the code into Ω. Press Alt+X again to turn it back into the code.
Emoji and symbols panel (Windows 10 and 11)
Win+.
Press Win + full stop (.) to open the panel, go to the Symbols tab (Ω) and pick Ω.
No numeric keypad on your laptop? See the other ways in our Alt codes guide.
Mac
Character Viewer
Ctrl+⌘ Cmd+Space
Press Ctrl+⌘+Space (or the Globe key + E), search for “ohm symbol” and click Ω to insert it.
iPhone
Make a shortcut (Text Replacement)
Turn a short word into Ω once and type it in any app:
- Copy Ω from this page.
- Open Settings › General › Keyboard › Text Replacement and tap +.
- Paste Ω as the Phrase and type a Shortcut, for example ;ohm.
- Now type ;ohm anywhere: the keyboard suggests Ω.
Android
Make a shortcut (Gboard personal dictionary)
Teach your keyboard a short word that turns into Ω:
- Copy Ω from this page.
- Open Gboard settings › Dictionary › Personal dictionary, choose your language and tap +.
- Paste Ω as the word and type a shortcut, for example ;ohm.
- Type ;ohm in any app and tap Ω in the suggestions.
Linux
Unicode input
Ctrl+Shift+U 2126 Enter
Press Ctrl+Shift+U, type 2126 and press Enter or Space. Works in GTK apps and with IBus (GNOME, Ubuntu, Fedora).
What Ω means and how it is used
Ω is the symbol of the ohm, the SI unit of electrical resistance, named after Georg Simon Ohm. This page shows the separate ohm sign U+2126, kept for old encodings; Unicode treats it as identical to Greek capital omega Ω (U+03A9) and recommends the omega. Many apps silently convert one into the other, which is fine: 4.7 kΩ means the same either way.
In Unicode, Ω is code point U+2126 with the official name OHM SIGN. It belongs to the Letterlike Symbols block and arrived with Unicode 1.1 in 1993.
You will find it in our units, 112 symbols in all, together with ° ℃ µ % ㎡.
Codes for HTML, CSS and JavaScript
Tap Copy next to the code you need.
| HTML decimal | Ω | |
|---|---|---|
| HTML hex | Ω | |
| CSS | content: "\2126"; | |
| JavaScript | \u2126 | |
| URL | %E2%84%A6 | |
| UTF-8 bytes | E2 84 A6 | |
| Unicode | U+2126 |
Will it show on my friend's phone?
Very likely yes: Ω dates from Unicode 1.1 (1993), so every current system has a font for it.
Checking your device…
Don't confuse Ω with
These look alike but are different characters. Search, sorting and screen readers treat them differently, so copy the one you mean.
- ΩOhm symbolU+2126 · OHM SIGN
- Omega symbolU+03A9 · GREEK CAPITAL LETTER OMEGA · Greek and Coptic
Names in other languages
What Ω is called in the 12 languages of this site (Unicode CLDR and our editors). Tap a name to open that language's page.
| Language | Name |
|---|---|
| English | Ohm symbol |
| Português | Símbolo de ohm |
| Español | Símbolo de ohmio |
| Italiano | Simbolo ohm |
| Français | Symbole ohm |
| Deutsch | Ohm-Zeichen |
| Türkçe | Ohm sembolü |
| Bahasa Indonesia | Simbol ohm |
| Polski | Symbol om |
| Русский | Символ ома |
| 日本語 | オーム記号 |
| 한국어 | 옴 기호 |
Related symbols
All Units →Questions people ask
How do I type Ω on a laptop without a numeric keypad?
On Windows press Win + full stop (.) and pick Ω in the Symbols tab, or in Word type 2126 and press Alt+X.
What is the difference between Ω and Ω?
Ω is the ohm symbol (U+2126). Ω is a different character: omega symbol (U+03A9, Greek and Coptic block). They can look alike, but computers treat them as different letters, so a search for one will not find the other.
How do I type Ω on an iPhone?
The iPhone keyboard has no key for Ω. Copy it here, then add it in Settings › General › Keyboard › Text Replacement with a shortcut like ;ohm.
What is the HTML code for the ohm symbol?
There is no named entity; use Ω or Ω. In CSS write \2126, in JavaScript \u2126.
Will Ω show on every phone?
Very likely yes: Ω dates from Unicode 1.1 (1993), so every current system has a font for it.