π is the Unicode character MUSICAL SYMBOL CLUSTER NOTEHEAD BLACK, code point U+1D15B (decimal 119131) 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 9B.
Codes
| Where | How to write it |
|---|---|
| Code point | U+1D15B |
| Decimal | 119131 |
| UTF-8 bytes | F0 9D 85 9B |
| UTF-16 (big-endian) | D834 DD5B |
| UTF-32 | 0001D15B |
| HTML decimal | 𝅛 |
| HTML hex | 𝅛 |
| CSS | \1D15B |
| JavaScript | \u{1D15B} or \uD834\uDD5B |
| JSON | \uD834\uDD5B |
| Python | \U0001D15B |
| Python by name | \N{MUSICAL SYMBOL CLUSTER NOTEHEAD BLACK} |
| Java, C# | \uD834\uDD5B |
| Rust, Swift | \u{1D15B} |
| Go, C, C++ | \U0001D15B |
| URL (percent-encoded) | %F0%9D%85%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 | MUSICAL SYMBOL CLUSTER NOTEHEAD BLACK |
| Code point | U+1D15B (decimal 119131) |
| 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+1D153 Musical Symbol Moon Notehead Black
- π U+1D154 Musical Symbol Triangle-Round Notehead Down White
- π U+1D155 Musical Symbol Triangle-Round Notehead Down Black
- 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+1D15C Musical Symbol Breve
- π U+1D15D Musical Symbol Whole Note
- π U+1D15E Musical Symbol Half Note
- π U+1D15F Musical Symbol Quarter Note
- π U+1D160 Musical Symbol Eighth Note
- π ‘ U+1D161 Musical Symbol Sixteenth Note
- π ’ U+1D162 Musical Symbol Thirty-Second Note
- π £ U+1D163 Musical Symbol Sixty-Fourth 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+1D15B?
- F0 9D 85 9B (hex), 4 bytes. In a URL it is %F0%9D%85%9B.
- How do I write U+1D15B in JavaScript or Python?
- JavaScript: \u{1D15B} or \uD834\uDD5B. Python: \U0001D15B.
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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