π is the Unicode character TETRAGRAM FOR OPPOSITION, code point U+1D30D (decimal 119565) in the Tai Xuan Jing Symbols block, added in Unicode 4.0. In HTML write 𝌍, and in UTF-8 it is the 4 bytes F0 9D 8C 8D.
Codes
| Where | How to write it |
|---|---|
| Code point | U+1D30D |
| Decimal | 119565 |
| UTF-8 bytes | F0 9D 8C 8D |
| UTF-16 (big-endian) | D834 DF0D |
| UTF-32 | 0001D30D |
| HTML decimal | 𝌍 |
| HTML hex | 𝌍 |
| CSS | \1D30D |
| JavaScript | \u{1D30D} or \uD834\uDF0D |
| JSON | \uD834\uDF0D |
| Python | \U0001D30D |
| Python by name | \N{TETRAGRAM FOR OPPOSITION} |
| Java, C# | \uD834\uDF0D |
| Rust, Swift | \u{1D30D} |
| Go, C, C++ | \U0001D30D |
| URL (percent-encoded) | %F0%9D%8C%8D |
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 | TETRAGRAM FOR OPPOSITION |
| Code point | U+1D30D (decimal 119565) |
| Block | Tai Xuan Jing Symbols (U+1D300βU+1D35F) |
| General category | So: Other symbol |
| Script | Common |
| Bidirectional class | ON: Other neutral |
| Mirrored in right-to-left text | No |
| First in Unicode version | 4.0 |
Nearby in Tai Xuan Jing Symbols
- π U+1D305 Digram For Earth
- π U+1D306 Tetragram For Centre
- π U+1D307 Tetragram For Full Circle
- π U+1D308 Tetragram For Mired
- π U+1D309 Tetragram For Barrier
- π U+1D30A Tetragram For Keeping Small
- π U+1D30B Tetragram For Contrariety
- π U+1D30C Tetragram For Ascent
- π U+1D30E Tetragram For Branching Out
- π U+1D30F Tetragram For Defectiveness Or Distortion
- π U+1D310 Tetragram For Divergence
- π U+1D311 Tetragram For Youthfulness
- π U+1D312 Tetragram For Increase
- π U+1D313 Tetragram For Penetration
- π U+1D314 Tetragram For Reach
- π U+1D315 Tetragram For Contact
All 87 characters: Tai Xuan Jing 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+1D30D?
- F0 9D 8C 8D (hex), 4 bytes. In a URL it is %F0%9D%8C%8D.
- How do I write U+1D30D in JavaScript or Python?
- JavaScript: \u{1D30D} or \uD834\uDF0D. Python: \U0001D30D.
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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