π is the Unicode character MATHEMATICAL SANS-SERIF BOLD ITALIC KAPPA SYMBOL, code point U+1D7C6 (decimal 120774) 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 9F 86.
Codes
| Where | How to write it |
|---|---|
| Code point | U+1D7C6 |
| Decimal | 120774 |
| UTF-8 bytes | F0 9D 9F 86 |
| UTF-16 (big-endian) | D835 DFC6 |
| UTF-32 | 0001D7C6 |
| HTML decimal | 𝟆 |
| HTML hex | 𝟆 |
| CSS | \1D7C6 |
| JavaScript | \u{1D7C6} or \uD835\uDFC6 |
| JSON | \uD835\uDFC6 |
| Python | \U0001D7C6 |
| Python by name | \N{MATHEMATICAL SANS-SERIF BOLD ITALIC KAPPA SYMBOL} |
| Java, C# | \uD835\uDFC6 |
| Rust, Swift | \u{1D7C6} |
| Go, C, C++ | \U0001D7C6 |
| URL (percent-encoded) | %F0%9D%9F%86 |
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 ITALIC KAPPA SYMBOL |
| Code point | U+1D7C6 (decimal 120774) |
| 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 ITALIC 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
- πΎ U+1D7BE Mathematical Sans-Serif Bold Italic Small Upsilon
- πΏ U+1D7BF Mathematical Sans-Serif Bold Italic Small Phi
- π U+1D7C0 Mathematical Sans-Serif Bold Italic Small Chi
- π U+1D7C1 Mathematical Sans-Serif Bold Italic Small Psi
- π U+1D7C2 Mathematical Sans-Serif Bold Italic Small Omega
- π U+1D7C3 Mathematical Sans-Serif Bold Italic Partial Differential
- π U+1D7C4 Mathematical Sans-Serif Bold Italic Epsilon Symbol
- π U+1D7C5 Mathematical Sans-Serif Bold Italic Theta Symbol
- π U+1D7C7 Mathematical Sans-Serif Bold Italic Phi Symbol
- π U+1D7C8 Mathematical Sans-Serif Bold Italic Rho Symbol
- π U+1D7C9 Mathematical Sans-Serif Bold Italic Pi Symbol
- π U+1D7CA Mathematical Bold Capital Digamma
- π U+1D7CB Mathematical Bold Small Digamma
- π U+1D7CE Mathematical Bold Digit Zero
- π U+1D7CF Mathematical Bold Digit One
- π U+1D7D0 Mathematical Bold Digit Two
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+1D7C6?
- F0 9D 9F 86 (hex), 4 bytes. In a URL it is %F0%9D%9F%86.
- How do I write U+1D7C6 in JavaScript or Python?
- JavaScript: \u{1D7C6} or \uD835\uDFC6. Python: \U0001D7C6.
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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