Windows
2 options- In Word / Outlook: type 2622 then press Alt + X.
- Anywhere: press Win + . to open the emoji & symbol picker, then search.
Radioactive Sign Symbol
A symbol from the Warning Symbols collection. Click the symbol or the button below to copy.
- Symbol
- ☢
- Unicode
- U+2622
- HTML entity
- ☢
- Category
- Warning Symbols
Export
Download Radioactive Sign as SVG or PNG — or add a caption to make a labelled icon, badge or sticker.
Background
Previewtransparent background
Fill color applies to monochrome symbols; multicolor emoji keep their own colors. Add a circle/rounded background to make an app icon or avatar. Exports are self-contained; the SVG embeds the glyph's font. Without a background, exports are transparent.
2 of 22 in the warning symbols collection
About the radioactive sign symbol
The radioactive sign, a trefoil consisting of three blades radiating from a central circle, is an internationally recognized warning symbol for ionizing radiation. It marks areas, containers, or materials that pose a radiation hazard, often appearing on nuclear facilities, medical equipment, and industrial sources.
As a standard Unicode emoji, it appears in digital messaging and social media to signal danger, nuclear topics, or hazardous situations. The symbol is also used in safety signage, scientific diagrams, and environmental discussions.
How to type Radioactive 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 2622.
- Or: Control + Command + Space opens the Character Viewer — search by name.
Linux
1 step- Press Ctrl + Shift + U, type 2622, 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.
Related warning symbols
Other warning symbols you can copy and paste — explore similar Unicode characters from the same family.
- ⚠Warning SignCopy the warning sign symbol→
- ☣Biohazard SignCopy the biohazard sign symbol→
- ☠Skull And CrossbonesCopy the skull and crossbones symbol→
- ☡Caution SignCopy the caution sign symbol→
- ⛔No EntryCopy the no entry symbol→
- ⚡High Voltage SignCopy the high voltage sign symbol→
- ⌁Electric ArrowCopy the electric arrow symbol→
- ⏚Earth GroundCopy the earth ground symbol→
- ⏛FuseCopy the fuse symbol→
- 🚫No Entry SignCopy the no entry sign symbol→
- 🛑Octagonal SignCopy the octagonal sign symbol→
- ⛑Helmet With White CrossCopy the helmet with white cross symbol→
Explore related collections
Browse other symbol families that pair well with warning symbols.