I have gone through symbol charts of latex and could not find how to put an ohm symbol. Like \theta, \omega, is there some command for ohms symbol?

3 Answers 3


You can use \usepackage{siunitx}. After that just input as \si{\ohm}. If you want to use a specific value it is better to mark it up like \SI{1}{\ohm}.


Just use \Omega since ohms symbol is uppercase Greek letter omega.

  • 2
    @JouleV While I do agree that using the math mode symbol $\Omega$ isn't the ideal way to get an Ohm symbol, please note that $\Omega$ is upright. I find the downvote (if it's from you, otherwise sorry) a wee bit exaggerated.
    – campa
    Feb 20, 2019 at 9:41
  • @campa I rarely downvote any first post, so don't worry. See here.
    – user156344
    Feb 20, 2019 at 9:43
  • 4
    This is a reasonable answer. I don't understand the downvote. +1 Feb 20, 2019 at 10:04
  • 1
    It is an essential complement to the accepted answer, as not all publishers allow siunitx to be loaded.
    – equaeghe
    Dec 19, 2019 at 10:03

Since the ohm symbol is just the non-italic greek omega letter, you can as well use the command \textOmega from the textgreek package, which is in the large symbols table.

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