🧠 is the Unicode emoji BRAIN, code point U+1F9E0 (decimal 129504) in the Supplemental Symbols and Pictographs block, added in Unicode 10.0. In HTML write 🧠, and in UTF-8 it is the 4 bytes F0 9F A7 A0.
Codes
| Where | How to write it |
|---|---|
| Code point | U+1F9E0 |
| Decimal | 129504 |
| UTF-8 bytes | F0 9F A7 A0 |
| UTF-16 (big-endian) | D83E DDE0 |
| UTF-32 | 0001F9E0 |
| HTML decimal | 🧠 |
| HTML hex | 🧠 |
| CSS | \1F9E0 |
| JavaScript | \u{1F9E0} or \uD83E\uDDE0 |
| JSON | \uD83E\uDDE0 |
| Python | \U0001F9E0 |
| Python by name | \N{BRAIN} |
| Java, C# | \uD83E\uDDE0 |
| Rust, Swift | \u{1F9E0} |
| Go, C, C++ | \U0001F9E0 |
| URL (percent-encoded) | %F0%9F%A7%A0 |
JavaScript and JSON strings store text as UTF-16, so this character takes two code units (a surrogate pair) and "🧠".length is 2. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | BRAIN |
| Emoji name | brain |
| Code point | U+1F9E0 (decimal 129504) |
| Block | Supplemental Symbols and Pictographs (U+1F900–U+1F9FF) |
| General category | So: Other symbol |
| Script | Common |
| Bidirectional class | ON: Other neutral |
| Mirrored in right-to-left text | No |
| First in Unicode version | 10.0 |
Nearby in Supplemental Symbols and Pictographs
- 🧘 U+1F9D8 Person in lotus position
- 🧙 U+1F9D9 Mage
- 🧚 U+1F9DA Fairy
- 🧛 U+1F9DB Vampire
- 🧜 U+1F9DC Merperson
- 🧝 U+1F9DD Elf
- 🧞 U+1F9DE Genie
- 🧟 U+1F9DF Zombie
- 🧡 U+1F9E1 Orange heart
- 🧢 U+1F9E2 Billed cap
- 🧣 U+1F9E3 Scarf
- 🧤 U+1F9E4 Gloves
- 🧥 U+1F9E5 Coat
- 🧦 U+1F9E6 Socks
- 🧧 U+1F9E7 Red envelope
- 🧨 U+1F9E8 Firecracker
All 256 characters: Supplemental Symbols and Pictographs.
Official reference
Questions people ask
- What is the HTML code for 🧠?
- Use 🧠 (decimal) or 🧠 (hex).
- What is the UTF-8 encoding of U+1F9E0?
- F0 9F A7 A0 (hex), 4 bytes. In a URL it is %F0%9F%A7%A0.
- How do I write U+1F9E0 in JavaScript or Python?
- JavaScript: \u{1F9E0} or \uD83E\uDDE0. Python: \U0001F9E0.
Source
Unicode Character Database 18.0.0 (Unicode License v3) and the Unicode emoji test data; HTML entity names from the WHATWG HTML Standard (CC BY 4.0). The encodings above are computed from the code point and checked against Python's encoders. How the character looks depends on your fonts.
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