π is the Unicode character MUSICAL SYMBOL TRIANGLE-ROUND NOTEHEAD DOWN BLACK, code point U+1D155 (decimal 119125) in the Musical Symbols block, added in Unicode 3.1. In HTML write 𝅕, and in UTF-8 it is the 4 bytes F0 9D 85 95.
Codes
| Where | How to write it |
|---|---|
| Code point | U+1D155 |
| Decimal | 119125 |
| UTF-8 bytes | F0 9D 85 95 |
| UTF-16 (big-endian) | D834 DD55 |
| UTF-32 | 0001D155 |
| HTML decimal | 𝅕 |
| HTML hex | 𝅕 |
| CSS | \1D155 |
| JavaScript | \u{1D155} or \uD834\uDD55 |
| JSON | \uD834\uDD55 |
| Python | \U0001D155 |
| Python by name | \N{MUSICAL SYMBOL TRIANGLE-ROUND NOTEHEAD DOWN BLACK} |
| Java, C# | \uD834\uDD55 |
| Rust, Swift | \u{1D155} |
| Go, C, C++ | \U0001D155 |
| URL (percent-encoded) | %F0%9D%85%95 |
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 | MUSICAL SYMBOL TRIANGLE-ROUND NOTEHEAD DOWN BLACK |
| Code point | U+1D155 (decimal 119125) |
| Block | Musical Symbols (U+1D100βU+1D1FF) |
| General category | So: Other symbol |
| Script | Common |
| Bidirectional class | L: Left-to-right |
| Mirrored in right-to-left text | No |
| First in Unicode version | 3.1 |
Nearby in Musical Symbols
- π U+1D14D Musical Symbol Triangle Notehead Right Black
- π U+1D14E Musical Symbol Triangle Notehead Down White
- π U+1D14F Musical Symbol Triangle Notehead Down Black
- π U+1D150 Musical Symbol Triangle Notehead Up Right White
- π U+1D151 Musical Symbol Triangle Notehead Up Right Black
- π U+1D152 Musical Symbol Moon Notehead White
- π U+1D153 Musical Symbol Moon Notehead Black
- π U+1D154 Musical Symbol Triangle-Round Notehead Down White
- π U+1D156 Musical Symbol Parenthesis Notehead
- π U+1D157 Musical Symbol Void Notehead
- π U+1D158 Musical Symbol Notehead Black
- π U+1D159 Musical Symbol Null Notehead
- π U+1D15A Musical Symbol Cluster Notehead White
- π U+1D15B Musical Symbol Cluster Notehead Black
- π U+1D15C Musical Symbol Breve
- π U+1D15D Musical Symbol Whole Note
All 256 characters: Musical Symbols.
Official reference
Questions people ask
- What is the HTML code for π ?
- Use 𝅕 (decimal) or 𝅕 (hex).
- What is the UTF-8 encoding of U+1D155?
- F0 9D 85 95 (hex), 4 bytes. In a URL it is %F0%9D%85%95.
- How do I write U+1D155 in JavaScript or Python?
- JavaScript: \u{1D155} or \uD834\uDD55. Python: \U0001D155.
Source
Unicode Character Database 18.0.0 (Unicode License v3); 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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