Greek Capital Letter Theta Alt Code and Symbol

The Alt code for Greek Capital Letter Theta is 233. Hold Alt, type 233 on the numeric keypad, then release Alt. Greek Capital Letter Theta also has the Unicode codepoint U+0398, so you can type it with Alt+920 on Windows, search for U+0398 in macOS's Character Viewer, use Θ in HTML, or \0398 in CSS. If your keyboard has no numeric keypad, use the Character Viewer, the HTML entity, or copy the character directly — the Alt key method requires a physical numpad. Copy the Greek Capital Letter Theta character from this page when you need it in a form, chat message or document that does not accept Alt codes. HTML also defines the named entity Θ for Greek Capital Letter Theta, but the numeric form Θ is safer when compatibility is uncertain.

Codes for this symbol

Copy any value by clicking it.
Method	Value
Legacy Alt code
Alt + decimal
Alt + X hex
HTML named entity
HTML decimal
HTML hex
CSS escape
Python escape
JavaScript escape
UTF-8 bytes
Unicode codepoint
Unicode block
Unicode category

Not available for this symbol: macOS Option shortcut.

How to type greek capital letter theta on Windows

Turn Num Lock on so the numeric keypad is active.
Hold the left Alt key.
Type 2 3 3 on the numeric keypad.
Release Alt. The Greek Capital Letter Theta character (Θ) appears.

If your keyboard has no numeric keypad, see how to type symbols without a numpad.

How to type greek capital letter theta on macOS

There is no direct Option shortcut for Greek Capital Letter Theta. Open the Character Viewer with ⌃⌘Space, search for "Greek Capital Letter Theta" and click the character to insert it.

How to use greek capital letter theta in code

HTML: or , also
CSS: content:"\0398"; ()
Python: \u0398 or chr(0x398)
JavaScript: \u0398 or String.fromCodePoint(0x398)
JSON: "\u0398"
LaTeX: $\Theta$ (math mode)

Frequently asked questions

What is the Alt code for Greek Capital Letter Theta?

The legacy Alt code for Greek Capital Letter Theta is 233. Hold Alt, type 2 3 3 on the numeric keypad, then release Alt.

How do I type Θ without a numpad?

Use the Windows Character Viewer (Win+.), the macOS Character Viewer (⌃⌘Space), an HTML entity such as Θ, or copy the character directly from this page.

Why does Alt+920 not work?

Alt+920 only works on a keyboard with a physical numeric keypad. It also requires the application to accept the numeric-keypad input path. Laptops without a numpad need an alternative method.

What is the Unicode for Greek Capital Letter Theta?

The Unicode codepoint for Greek Capital Letter Theta is U+0398. You can use this value in HTML as Θ, in CSS as \0398, and in Word with Alt+X.

How do I type Θ on a Mac?

Open the Character Viewer with ⌃⌘Space and search for the character name or U+0398, then click it.

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