How to use omega(ω) symbol in LaTeX?

You do not need a package to print the Greek small letter omega in a LaTeX document, just use the default \omega command of LaTeX and the symbol will be printed in the document.

Symbol/UnicodeSmall omega/U+03C9
Type of symbolGreek small letter
Package (requirement)No
ArgumentNo
Latex command\omega
Example\omega → ω
\documentclass{article}
\begin{document}
   \[ \omega ! \]
   \[ Alt + 969 = \omega\; (win) \]
\end{document}

Output :

Use omega symbol in latex.

Small omega symbol in text mode

You will need a textgreek package to write the omega symbol in text mode. You can print this symbol in Latex text mode using the \textomega command included in this package.

\documentclass{article}
\usepackage{textgreek}
\begin{document}
   greek small letter omega =\textomega \\[6pt]
   Alt + 969 = \textomega (win)
\end{document}

Output :

Use omega symbol in text mode.

There is also another way to use the omega symbol in the text mode of latex. You can print the symbol in text mode using a single dollar($), but in this case, you have to use \; to give space. So it would be best if you use the above method.

\documentclass{article}
\begin{document}
    $ greek\;small\;letter\;omega =\omega $ \\[6pt]
    $ Alt + 969 = \omega (win) $
\end{document}

Output :

Use omega in text mode using single dollar in latex.

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