Greek letter

Omega Symbol (ω) — Copy & Paste

Grab the omega greek symbol in one click. Pronunciation: oh-MAY-guh.

ΩUpper

ωLower

Reference

Technical reference

Unicode, HTML entities, and LaTeX — tap the icon beside any value.

Character

Unicode

U+03A9

HTML named

Ω

HTML decimal

Ω

LaTeX

\Omega

Character

Unicode

U+03C9

HTML named

ω

HTML decimal

ω

LaTeX

\omega

Context

Common uses in science & math

Ohms & angular frequency

Ω is the SI symbol for ohm; ω commonly denotes angular frequency (rad/s).

Asymptotic notation & solid angle

CS uses Ω in asymptotic notation; physics may use Ω for solid angle or ohmic quantities.

Input

How to type Omega

Windows

Grab Ω for resistance values (e.g. 10 Ω) from this page.

macOS

Grab Ω/ω here; Character Viewer also lists omega.

Word & Google Docs

Paste Ω into schematics notes, BOM tables, and lab reports.

Prefer a full walkthrough? Read how to type Greek letters.

Explore

Omega FAQ

How do I insert the ohm symbol?

Grab uppercase omega Ω from this page—that is the official ohm sign in SI.

Ω vs ω — which do I need?

Use Ω for ohms and many “final/ultimate” labels; use ω for angular frequency and ordinary lowercase omega.