Greek Symbol
Greek letter

Theta Symbol (θ) — Copy & Paste

Grab the theta greek symbol in one click. Pronunciation: THAY-tuh.

ΘUpper
θLower
ϑScript / symbol theta
Reference

Technical reference

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

Uppercase Theta

Character
Θ
Unicode
U+0398
HTML named
Θ
HTML decimal
Θ
LaTeX
\Theta

Lowercase Theta

Character
θ
Unicode
U+03B8
HTML named
θ
HTML decimal
θ
LaTeX
\theta

Script / symbol theta

Character
ϑ
Unicode
U+03D1
HTML decimal
ϑ
LaTeX
\vartheta
Context

Common uses in science & math

Angles in trigonometry

θ is the default angle variable in trig, polar coordinates, and physics problem sets.

Potential temperature & Heaviside

Thermodynamics and meteorology use θ for potential temperature; some texts use Θ for the Heaviside step function.

Input

How to type Theta

Windows

Grab θ here—faster than Word’s Insert → Symbol for homework.

macOS

Grab θ, or use Character Viewer → “theta”.

Word & Google Docs

Works in Docs, Word, Notion, and LaTeX source as the Unicode character.

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

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Theta FAQ

How do I get theta into Google Docs?

Tap the icon next to θ above, then paste into Docs. It remains editable text, not an image.

What is the difference between θ and ϑ?

θ is the standard letter; ϑ is a script form used in some mathematical fonts. Meaning is usually the same.