UnicodeCharactercom
Ω
U+2126 · OHM SIGN

Ohm Sign

  • CodepointU+2126
  • NameOHM SIGN
  • Decimal8486
  • BlockLetterlike Symbols (U+2100–U+214F)
  • Plane0 — Basic Multilingual Plane
  • ScriptGreek
  • CategoryLu — Uppercase Letter
  • Unicode version1.1 (1993)
  • Bidi classL — Left-to-Right
  • Combining class0
  • East Asian widthA — Ambiguous
  • MirroredNo

About this character

U+2126 (Ω) is OHM SIGN, an uppercase letter in the Letterlike Symbols block. It belongs to the Greek script. It was added in Unicode 1.1 (1993).

Its lowercase form is U+03C9 ω.

It is a canonical singleton: Unicode treats it as identical to U+03A9 Ω, and every normalization form (NFC, NFD, NFKC, NFKD) replaces it with that character. Text that must round-trip exactly should avoid it. See the normalization guide.

How to type Ω

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Encodings & escapes

UTF-8 encoder →
UTF-8E2 84 A63 bytes
UTF-1621261 code unit
UTF-32000021264 bytes
HTML decimalΩ
HTML hexΩ
CSS\2126in content: "…"
JavaScript\u2126
JSON\u2126
Python\u2126
Python\N{OHM SIGN}by name
Java / C#\u2126
C / C++\u2126universal character name
Rust / Swift / PHP\u{2126}
Go\u2126
Ruby\u2126
Excel / Sheets=UNICHAR(8486)
URL-encoded%E2%84%A6percent-encoded UTF-8
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Normalization forms

Normalizer →
NFCU+03A9 Ω
NFDU+03A9 Ω
NFKCU+03A9 Ω
NFKDU+03A9 Ω
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Looks similar

Characters that Unicode’s security data (UTS #39 confusables) lists as visually confusable with this one. Useful for spotting lookalike spoofing in URLs and usernames.

U+03A9ΩGreek Capital Letter Omega U+1D6C0𝛀Mathematical Bold Capital Omega U+1D6FA𝛺Mathematical Italic Capital Omega U+1D734𝜴Mathematical Bold Italic Capital Omega U+1D76E𝝮Mathematical Sans-Serif Bold Capital Omega U+1D7A8𝞨Mathematical Sans-Serif Bold Italic Capital Omega U+162FᘯCanadian Syllabics Carrier Lho U+1635ᘵCanadian Syllabics Carrier Tlho U+102B6𐊶Carian Letter Tt2
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Nearby in Letterlike Symbols

All in block →
U+2120℠Service Mark U+2121℡Telephone Sign U+2122™Trade Mark Sign U+2123℣Versicle U+2124ℤDouble-Struck Capital Z U+2125℥Ounce Sign U+2127℧Inverted Ohm Sign U+2128ℨBlack-Letter Capital Z U+2129℩Turned Greek Small Letter Iota U+212AKKelvin Sign U+212BÅAngstrom Sign U+212CℬScript Capital B