AltKeyCodes

Biohazard Sign Symbol

There is no legacy Windows Alt code for Biohazard Sign because it is not in either the OEM code page 437 or Windows-1252 tables. The Unicode codepoint is U+2623, which you can use as ☣ in HTML, \2623 in CSS, or type with Alt+9763 on Windows (BMP only). If your keyboard has no numeric keypad, use the Character Viewer, the HTML entity, or copy the character directly. Biohazard Sign is outside both legacy code pages, which is why U+2623 is the identifier that works across Word, HTML, CSS, Python and JavaScript. Biohazard Sign has no named HTML entity, so use the numeric escape ☣ or the hex escape ☣.

Codes for this symbol

Copy any value by clicking it.
MethodValue
Alt + decimal
Alt + X hex
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, named HTML entity.

How to type biohazard sign on Windows

  1. Turn Num Lock on so the numeric keypad is active.
  2. Hold the left Alt key.
  3. Type 9 7 6 3 on the numeric keypad for the decimal codepoint 9763.
  4. Release Alt. The Biohazard Sign character (☣) appears.

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

How to type biohazard sign on macOS

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

How to use biohazard sign in code

  • HTML: or
  • CSS: content:"\2623"; ()
  • Python: \u2623 or chr(0x2623)
  • JavaScript: \u2623 or String.fromCodePoint(0x2623)
  • JSON: "\u2623"
Eighth NoteAlt+13
Black Heart SuitAlt+3
White Smiling FaceAlt+1
Female SignAlt+12
Male SignAlt+11
Black Spade SuitAlt+6
Black Club SuitAlt+5
Black Diamond SuitAlt+4
Black StarAlt+9733
Black Smiling FaceAlt+2
Beamed Eighth NotesAlt+14
Skull And CrossbonesAlt+9760
Music Sharp SignAlt+9839
Warning SignAlt+9888
High Voltage SignAlt+9889
Black Sun With RaysAlt+9728
White StarAlt+9734
Ballot BoxAlt+9744

Frequently asked questions

Is there an Alt code for ☣?

No legacy Alt code exists for Biohazard Sign because it is not in code page 437 or Windows-1252. Use the Unicode codepoint U+2623 in HTML, CSS or the Character Viewer instead.

How do I type ☣ without a numpad?

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

Why does Alt+9763 not work?

Alt+9763 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 Biohazard Sign?

The Unicode codepoint for Biohazard Sign is U+2623. You can use this value in HTML as ☣, in CSS as \2623, and in Word with Alt+X.

How do I type ☣ on a Mac?

Open the Character Viewer with ⌃⌘Space and search for the character name or U+2623, then click it.

Back to Miscellaneous Symbols