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☢️Radioactive Emoji

Tagged sign, ☢️ radioactive sits in Unicode's Warning Symbols group inside Symbols. It was introduced in Emoji 1.0 (2015) at U+2622 U+FE0F.

What ☢️ radioactive means

Caution and prohibition, most of it borrowed straight from real signage. ⚠️ heads a disclaimer or content warning, 🚫 and ⛔️ shut something down, and 🔞 marks adult material. ⛔️ is regularly mistaken for a stop sign, though the octagonal one 🛑 is a separate emoji filed with transport. ☢️ and ☣️ are rarely literal and instead label something toxic or best avoided.

Unicode tags this one sign and files it under Symbols → Warning Symbols.

Copy variants

radioactive carries a variation selector (U+FE0F) that forces colour rendering. Drop it and the same character renders as monochrome text.

Shortcodes

Type these instead of pasting — most chat apps expand them as you type.

How ☢️ is built

This emoji is more than one codepoint. Each part below is a character in its own right.

☢U+2622radioactive
·U+FE0FVariation selector (emoji style)

Codes & technical data

Unicode	`U+2622 U+FE0F`
HTML hex	`☢️`
HTML decimal	`☢️`
CSS	`\2622\FE0F`
JavaScript	`\u{2622}\u{FE0F}`
Python	`\U00002622\U0000FE0F`
Java / C#	`\u2622\uFE0F`
Rust	`\u{2622}\u{fe0f}`
Swift	`\u{2622}\u{FE0F}`
PHP	`\u{2622}\u{FE0F}`
URL encoded	`%E2%98%A2%EF%B8%8F`
UTF-8 bytes	`E2 98 A2 EF B8 8F`
UTF-16 bytes	`2622 FE0F`
Base64	`4pii77iP`
Decimal	`9762 65039`
Introduced	Emoji 1.0 (2015)

Keywords

sign

Appears in these collections

How to type ☢️

Windows — press Win + . and search “radioactive”.
macOS — press Ctrl + Cmd + Space to open the character viewer.
iOS & Android — switch to the emoji keyboard and type “sign”.
Linux — press Ctrl + Shift + U, then type 2622 and Enter.
HTML — paste ☢️.

How ☢️ renders

The same character drawn with whichever emoji fonts your device has installed. Apple, Google and Microsoft each draw it differently, so what you see below depends on what you are reading this on.

☢️Apple
☢️Segoe
☢️Noto
☢️System

Frequently asked questions

What does the ☢️ radioactive emoji mean?+

☢️ is the radioactive emoji, tagged sign. Caution and prohibition, most of it borrowed straight from real signage. ⚠️ heads a disclaimer or content warning, 🚫 and ⛔️ shut something down, and 🔞 marks adult material. ⛔️ is regularly mistaken for a stop sign, though the octagonal one 🛑 is a separate emoji filed with transport. ☢️ and ☣️ are rarely literal and instead label something toxic or best avoided.

What is the Unicode code for ☢️?+

radioactive is U+2622 U+FE0F. In HTML that is ☢️, in CSS \2622\FE0F, and in JavaScript \u{2622}\u{FE0F}. The full table above lists every escape format.

When was the ☢️ emoji added?+

radioactive got its emoji presentation in Emoji 1.0 (2015). Platforms that shipped before that release may draw it in plain text, or not at all — that is why the same character can look different on an old phone.

Added in Emoji 1.0 (2015)

Other emojis that shipped in the same Unicode release as ☢️ radioactive.