π is the Unicode emoji FIRST QUARTER MOON WITH FACE (βfirst quarter moon faceβ), code point U+1F31B (decimal 127771) in the Miscellaneous Symbols and Pictographs block, added in Unicode 6.0. In HTML write 🌛, and in UTF-8 it is the 4 bytes F0 9F 8C 9B.
Codes
| Where | How to write it |
|---|---|
| Code point | U+1F31B |
| Decimal | 127771 |
| UTF-8 bytes | F0 9F 8C 9B |
| UTF-16 (big-endian) | D83C DF1B |
| UTF-32 | 0001F31B |
| HTML decimal | 🌛 |
| HTML hex | 🌛 |
| CSS | \1F31B |
| JavaScript | \u{1F31B} or \uD83C\uDF1B |
| JSON | \uD83C\uDF1B |
| Python | \U0001F31B |
| Python by name | \N{FIRST QUARTER MOON WITH FACE} |
| Java, C# | \uD83C\uDF1B |
| Rust, Swift | \u{1F31B} |
| Go, C, C++ | \U0001F31B |
| URL (percent-encoded) | %F0%9F%8C%9B |
JavaScript and JSON strings store text as UTF-16, so this character takes two code units (a surrogate pair) and "π".length is 2. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | FIRST QUARTER MOON WITH FACE |
| Emoji name | first quarter moon face |
| Code point | U+1F31B (decimal 127771) |
| Block | Miscellaneous Symbols and Pictographs (U+1F300βU+1F5FF) |
| General category | So: Other symbol |
| Script | Common |
| Bidirectional class | ON: Other neutral |
| Mirrored in right-to-left text | No |
| First in Unicode version | 6.0 |
Nearby in Miscellaneous Symbols and Pictographs
- π U+1F313 First quarter moon
- π U+1F314 Waxing gibbous moon
- π U+1F315 Full moon
- π U+1F316 Waning gibbous moon
- π U+1F317 Last quarter moon
- π U+1F318 Waning crescent moon
- π U+1F319 Crescent moon
- π U+1F31A New moon face
- π U+1F31C Last quarter moon face
- π U+1F31D Full moon face
- π U+1F31E Sun with face
- π U+1F31F Glowing star
- π U+1F320 Shooting star
- π‘ U+1F321 Thermometer
- π’ U+1F322 Black Droplet
- π£ U+1F323 White Sun
All 768 characters: Miscellaneous Symbols and Pictographs.
Official reference
Questions people ask
- What is the HTML code for π?
- Use 🌛 (decimal) or 🌛 (hex).
- What is the UTF-8 encoding of U+1F31B?
- F0 9F 8C 9B (hex), 4 bytes. In a URL it is %F0%9F%8C%9B.
- How do I write U+1F31B in JavaScript or Python?
- JavaScript: \u{1F31B} or \uD83C\uDF1B. Python: \U0001F31B.
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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