Theta symbol
Tap the box to copy θ. Below: what it means and every way to type it.
U+03B8
Theta symbol and related symbols
4 symbols, each with its codes and shortcuts.
| Symbol | Name | Code | HTML | Windows | Mac | LaTeX |
|---|---|---|---|---|---|---|
| Greek small letter theta | U+03B8 | θ | \theta | |||
| Greek capital letter theta | U+0398 | Θ | Alt + 233 | \Theta | ||
| Greek theta symbol | U+03D1 | ϑ | \vartheta | |||
| Greek capital theta symbol | U+03F4 | ϴ |
What θ means
Theta is the eighth letter of the Greek alphabet. In math it usually names an angle; in physics it can mean temperature.
Common uses: trigonometry, physics and Greek life letters.
- Unicode name
- Greek Small Letter Theta
- Code point
- U+03B8
- Windows
- Alt + X in Word
- Mac
- Character Viewer
Typing θ on any device
Copy and paste
Use the box at the top of the page for θ, or the table for its relatives.
Windows
In Word, type 03B8 and press Alt + X. Anywhere else, press Windows key + . (period) and search the symbols tab.
Mac
No shortcut? Control + Command + Space opens the Character Viewer; search for greek small letter theta.
iPhone and Android
Copy it from this page, or set up a text replacement in your keyboard settings so a short code like ;sym turns into the symbol.
HTML
Use θ or θ.
LaTeX
Use \theta in math mode.
Questions people ask
How do I type θ on a keyboard?
Windows has no Alt code for it; use the symbols tab in the Windows key + . panel. Mac users can find it in the Character Viewer (Control + Command + Space).
What is the HTML code for θ?
θ or θ
What does θ mean?
Theta is the eighth letter of the Greek alphabet. In math it usually names an angle; in physics it can mean temperature.
Where is θ used?
Trigonometry, physics and Greek life letters.
More symbols
Updated November 13, 2026