How do I write the symbol for degrees in LaTeX?

Superscripted circle

You can have ^\circ in math mode to have a circle in superscript, or just write

The human body temperature is 37$^\circ$ Celsius

if you want degrees in your text.

You can also define a command that writes a degree symbol when used with \degree if you add the following to your preamble

\newcommand{\degree}{\ensuremath{^\circ}}

Since the command ensures that the superscripted circle is written in math mode, you can use this command both in math mode and in text mode, as follows:

The human body temperature is 37\degree Celsius

or

The human body temperature is $37\degree$ Celsius

Alternative: gensymb package

Alternatively, you can \usepackage{gensymb} and then use its commands \degree or \celsius to add degrees both in math and text mode.

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