Windows
2 options- In Word / Outlook: type 2623 then press Alt + X.
- Anywhere: press Win + . to open the emoji & symbol picker, then search.
Biohazard Sign
A symbol from the Tech & UI collection. Click the symbol or the button below to copy.
- Symbol
- ☣
- Unicode
- U+2623
- HTML entity
- ☣
- Category
- Tech & UI
Export
Download Biohazard Sign as a vector SVG or a raster PNG.
SVG uses the system font stack — open in any vector editor and convert to outlines if needed. PNGs have a transparent background.
32 of 41 in the tech & ui collection
About the biohazard sign symbol
Biohazard symbols represent biological agents that pose a threat to the health of living organisms, primarily humans. This character is identified as the Biohazard Sign and belongs to the Miscellaneous Symbols block. While it has no spoken pronunciation in everyday speech, it serves as a universal visual warning. It is categorized under Tech and UI for this collection due to its frequent appearance in digital interface design.
In modern writing, this symbol appears frequently in signage and documentation related to laboratory safety, medical waste management, and chemical handling. Aside from professional regulatory contexts, it is commonly used in social media posts and digital gaming to denote toxicity, infectious diseases, or post-apocalyptic themes. Writers may also use it in technical documentation to highlight dangerous system components or bio-technological concepts.
How to type Biohazard Sign
Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.
macOS
2 options- Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 2623.
- Or: Control + Command + Space opens the Character Viewer — search by name.
Linux
1 step- Press Ctrl + Shift + U, type 2623, then press Enter or Space.
Copy in every format
Every form of this character — for HTML, CSS, JavaScript, URLs and more. Click any value to copy.
Text vs emoji presentation
This codepoint has two standardized presentations. Append U+FE0E to force the monochrome text form, or U+FE0F to force the colorful emoji form. Default presentation: text.
Part of the Miscellaneous Symbols block
☣ biohazard sign lives inside the Miscellaneous Symbols Unicode block. Browse every indexed character in Miscellaneous Symbols →
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