ψ is the Unicode character GREEK SMALL LETTER PSI, code point U+03C8 (decimal 968) in the Greek and Coptic block, added in Unicode 1.1. In HTML write ψ, and in UTF-8 it is the 2 bytes CF 88.
Codes
| Where | How to write it |
|---|---|
| Code point | U+03C8 |
| Decimal | 968 |
| UTF-8 bytes | CF 88 |
| UTF-16 (big-endian) | 03C8 |
| UTF-32 | 000003C8 |
| HTML decimal | ψ |
| HTML hex | ψ |
| HTML named | ψ |
| CSS | \3C8 |
| JavaScript | \u03C8 |
| JSON | \u03C8 |
| Python | \u03C8 |
| Python by name | \N{GREEK SMALL LETTER PSI} |
| Java, C# | \u03C8 |
| Rust, Swift | \u{3C8} |
| Go, C, C++ | \u03C8 |
| URL (percent-encoded) | %CF%88 |
JavaScript and JSON strings store text as UTF-16, so this character is one code unit long. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | GREEK SMALL LETTER PSI |
| Code point | U+03C8 (decimal 968) |
| Block | Greek and Coptic (U+0370–U+03FF) |
| General category | Ll: Lowercase letter |
| Script | Greek |
| Bidirectional class | L: Left-to-right |
| Mirrored in right-to-left text | No |
| First in Unicode version | 1.1 |
Upper and lower case
- Ψ U+03A8 Greek Capital Letter Psi — Uppercase
Nearby in Greek and Coptic
- π U+03C0 Greek Small Letter Pi
- ρ U+03C1 Greek Small Letter Rho
- ς U+03C2 Greek Small Letter Final Sigma
- σ U+03C3 Greek Small Letter Sigma
- τ U+03C4 Greek Small Letter Tau
- υ U+03C5 Greek Small Letter Upsilon
- φ U+03C6 Greek Small Letter Phi
- χ U+03C7 Greek Small Letter Chi
- ω U+03C9 Greek Small Letter Omega
- ϊ U+03CA Greek Small Letter Iota With Dialytika
- ϋ U+03CB Greek Small Letter Upsilon With Dialytika
- ό U+03CC Greek Small Letter Omicron With Tonos
- ύ U+03CD Greek Small Letter Upsilon With Tonos
- ώ U+03CE Greek Small Letter Omega With Tonos
- Ϗ U+03CF Greek Capital Kai Symbol
- ϐ U+03D0 Greek Beta Symbol
All 135 characters: Greek and Coptic.
Official reference
Questions people ask
- What is the HTML code for ψ?
- Use the named entity ψ, or ψ (decimal) or ψ (hex).
- What is the UTF-8 encoding of U+03C8?
- CF 88 (hex), 2 bytes. In a URL it is %CF%88.
- How do I write U+03C8 in JavaScript or Python?
- JavaScript: \u03C8. Python: \u03C8.
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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