Theta Symbol θ
Tap the button to copy the theta symbol, or grab a variant below. The table has its Alt code, HTML entity and Unicode details.
| Copy | Unicode name | Codepoint | HTML | Windows Alt code |
|---|---|---|---|---|
| Greek Small Letter Theta | U+03B8 | θ | none | |
| Greek Capital Letter Theta | U+0398 | Θ | Alt+233 | |
| Greek Theta Symbol | U+03D1 | ϑ | none |
- The theta symbol is Unicode U+03B8 (Greek Small Letter Theta).
- In HTML, type
θto get θ. - It is a single character: it survives copy and paste into any text field and counts as one character against limits.
Lowercase theta is the go-to variable for angles in geometry and trigonometry. Capital theta appears in computer science's big-theta complexity notation. The script variant ϑ is a typographic alternative some math fonts prefer.