π is the Unicode character MATHEMATICAL SANS-SERIF BOLD KAPPA SYMBOL, code point U+1D78C (decimal 120716) in the Mathematical Alphanumeric Symbols block, added in Unicode 3.1. In HTML write 𝞌, and in UTF-8 it is the 4 bytes F0 9D 9E 8C.
Codes
| Where | How to write it |
|---|---|
| Code point | U+1D78C |
| Decimal | 120716 |
| UTF-8 bytes | F0 9D 9E 8C |
| UTF-16 (big-endian) | D835 DF8C |
| UTF-32 | 0001D78C |
| HTML decimal | 𝞌 |
| HTML hex | 𝞌 |
| CSS | \1D78C |
| JavaScript | \u{1D78C} or \uD835\uDF8C |
| JSON | \uD835\uDF8C |
| Python | \U0001D78C |
| Python by name | \N{MATHEMATICAL SANS-SERIF BOLD KAPPA SYMBOL} |
| Java, C# | \uD835\uDF8C |
| Rust, Swift | \u{1D78C} |
| Go, C, C++ | \U0001D78C |
| URL (percent-encoded) | %F0%9D%9E%8C |
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 | MATHEMATICAL SANS-SERIF BOLD KAPPA SYMBOL |
| Code point | U+1D78C (decimal 120716) |
| Block | Mathematical Alphanumeric Symbols (U+1D400βU+1D7FF) |
| General category | Ll: Lowercase letter |
| Script | Common |
| Bidirectional class | L: Left-to-right |
| Mirrored in right-to-left text | No |
| First in Unicode version | 3.1 |
Decomposition
MATHEMATICAL SANS-SERIF BOLD KAPPA SYMBOL has a compatibility decomposition (font) to the sequence below. NFKC and NFKD normalisation replace it with that sequence, which can change how text looks, so use them for search, not for storage.
Nearby in Mathematical Alphanumeric Symbols
- π U+1D784 Mathematical Sans-Serif Bold Small Upsilon
- π U+1D785 Mathematical Sans-Serif Bold Small Phi
- π U+1D786 Mathematical Sans-Serif Bold Small Chi
- π U+1D787 Mathematical Sans-Serif Bold Small Psi
- π U+1D788 Mathematical Sans-Serif Bold Small Omega
- π U+1D789 Mathematical Sans-Serif Bold Partial Differential
- π U+1D78A Mathematical Sans-Serif Bold Epsilon Symbol
- π U+1D78B Mathematical Sans-Serif Bold Theta Symbol
- π U+1D78D Mathematical Sans-Serif Bold Phi Symbol
- π U+1D78E Mathematical Sans-Serif Bold Rho Symbol
- π U+1D78F Mathematical Sans-Serif Bold Pi Symbol
- π U+1D790 Mathematical Sans-Serif Bold Italic Capital Alpha
- π U+1D791 Mathematical Sans-Serif Bold Italic Capital Beta
- π U+1D792 Mathematical Sans-Serif Bold Italic Capital Gamma
- π U+1D793 Mathematical Sans-Serif Bold Italic Capital Delta
- π U+1D794 Mathematical Sans-Serif Bold Italic Capital Epsilon
All 997 characters: Mathematical Alphanumeric Symbols.
Official reference
Questions people ask
- What is the HTML code for π?
- Use 𝞌 (decimal) or 𝞌 (hex).
- What is the UTF-8 encoding of U+1D78C?
- F0 9D 9E 8C (hex), 4 bytes. In a URL it is %F0%9D%9E%8C.
- How do I write U+1D78C in JavaScript or Python?
- JavaScript: \u{1D78C} or \uD835\uDF8C. Python: \U0001D78C.
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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