AltKeyCodes

Greek Capital Letter Iota Symbol

There is no legacy Windows Alt code for Greek Capital Letter Iota because it is not in either the OEM code page 437 or Windows-1252 tables. The Unicode codepoint is U+0399, which you can use as Ι in HTML, \0399 in CSS, or type with Alt+921 on Windows (BMP only). If your keyboard has no numeric keypad, use the Character Viewer, the HTML entity, or copy the character directly. Greek Capital Letter Iota is outside both legacy code pages, which is why U+0399 is the identifier that works across Word, HTML, CSS, Python and JavaScript. HTML also defines the named entity Ι for Greek Capital Letter Iota, but the numeric form Ι is safer when compatibility is uncertain.

Codes for this symbol

Copy any value by clicking it.
MethodValue
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: legacy Windows Alt code, macOS Option shortcut.

How to type greek capital letter iota on Windows

  1. Turn Num Lock on so the numeric keypad is active.
  2. Hold the left Alt key.
  3. Type 9 2 1 on the numeric keypad for the decimal codepoint 921.
  4. Release Alt. The Greek Capital Letter Iota character (Ι) appears.

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

How to type greek capital letter iota on macOS

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

How to use greek capital letter iota in code

  • HTML: or , also
  • CSS: content:"\0399"; ()
  • Python: \u0399 or chr(0x399)
  • JavaScript: \u0399 or String.fromCodePoint(0x399)
  • JSON: "\u0399"
Square RootAlt+251
InfinityAlt+236
Greek Capital Letter OmegaAlt+234
Greek Small Letter PiAlt+227
Greek Capital Letter SigmaAlt+228
Greek Small Letter AlphaAlt+224
N-ary SummationAlt+8721
Greek Capital Letter GammaAlt+226
Greek Capital Letter ThetaAlt+233
Greek Capital Letter PhiAlt+232
Greek Small Letter EpsilonAlt+238
Greek Capital Letter DeltaAlt+916
Greek Small Letter MuAlt+956
Greek Small Letter SigmaAlt+229
Greek Small Letter PhiAlt+237
Greek Capital Letter MuAlt+924
Greek Capital Letter PiAlt+928
Greek Small Letter LamdaAlt+955

Frequently asked questions

Is there an Alt code for Ι?

No legacy Alt code exists for Greek Capital Letter Iota because it is not in code page 437 or Windows-1252. Use the Unicode codepoint U+0399 in HTML, CSS or the Character Viewer instead.

How do I type Ι without a numpad?

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

Why does Alt+921 not work?

Alt+921 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 Iota?

The Unicode codepoint for Greek Capital Letter Iota is U+0399. You can use this value in HTML as Ι, in CSS as \0399, and in Word with Alt+X.

How do I type Ι on a Mac?

Open the Character Viewer with ⌃⌘Space and search for the character name or U+0399, then click it.

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