Radioactive

☢️ is the radioactive emoji, part of Unicode's Symbols group, added in Emoji 1.0 (2015). Unicode's keyword list links it with “sign”.

Create a new emoji with ☢️

Where warning emoji usually appear

DBEmoji editorial interpretation

Applies to every emoji in this Unicode subgroup, not only this one.

Alerts, hazards, and cautionary notes

Technical details

Source: Unicode Consortium

Unicode name: RADIOACTIVE SIGN
CLDR short name: radioactive
Codepoint: U+2622 U+FE0F
Hex: 2622 FE0F
Emoji version: 1.0
Unicode version: 8.0
First released: 2015
Unicode group: Symbols
Unicode subgroup: warning
Status: Recommended for General Interchange (RGI)

Data verified 2026-10-21 · Unicode Emoji 16.0 · How this data is built

GitHub shortcode

From GitHub's own emoji list (gemoji). Slack, Discord and other apps keep separate lists, so a code may differ there.

:radioactive:

Keywords

Source: Unicode CLDR

radioactive · sign

How it looks

Radioactive — Fluent Color — Fluent Color

Your device

Rendered from open-licensed emoji sets. Your device shows its own design. Microsoft Fluent Emoji (MIT)

Download as image

Renders ☢️ with your system emoji font into PNG, WebP, or SVG. Pick a pixel size, then download.

Note: PNG and WebP use the emoji font installed on your device (Apple Color Emoji on macOS/iOS, Segoe UI Emoji on Windows, Noto Color Emoji on Android/Linux), so the look matches your platform. SVG embeds the character as text — rendering depends on the viewer.

Microsoft Fluent UI Emoji — original artwork

Download Microsoft's official Fluent rendering of ☢️. SVG files are vector (scales to any size); the 3D PNG is 256×256.

Questions people ask

What does the ☢️ radioactive emoji mean?: ☢️ is the radioactive emoji, part of Unicode's Symbols group, added in Emoji 1.0 (2015). Unicode's keyword list links it with “sign”.
What is the Unicode codepoint for ☢️?: U+2622 U+FE0F: the character U+2622 (RADIOACTIVE SIGN) followed by U+FE0F, variation selector-16, which asks for the colour emoji form. Without U+FE0F many systems draw U+2622 as a plain text symbol.
When was the ☢️ radioactive emoji released?: It was added in Emoji 1.0, published in 2015, alongside Unicode 8.0. Phones and computers show it once their system software supports that version; older devices may show an empty box instead.
How do I type ☢️ on my phone or computer?: On iPhone or Android, open the emoji keyboard and search for “radioactive”. On Windows, press Windows key + . (full stop); on a Mac, press Control + Command + Space, then search for the same word. You can also copy ☢️ from this page with one click.
What is the shortcode for ☢️?: On GitHub, type :radioactive: and it turns into ☢️ — that code comes from GitHub's own emoji list. Slack, Discord and other apps keep their own shortcode lists; many codes match GitHub's, but check the app's emoji picker to be sure.