ο is the Unicode character GREEK SMALL LETTER OMICRON, code point U+03BF (decimal 959) in the Greek and Coptic block, added in Unicode 1.1. In HTML write ο, and in UTF-8 it is the 2 bytes CE BF.
Codes
| Where | How to write it |
|---|---|
| Code point | U+03BF |
| Decimal | 959 |
| UTF-8 bytes | CE BF |
| UTF-16 (big-endian) | 03BF |
| UTF-32 | 000003BF |
| HTML decimal | ο |
| HTML hex | ο |
| HTML named | ο |
| CSS | \3BF |
| JavaScript | \u03BF |
| JSON | \u03BF |
| Python | \u03BF |
| Python by name | \N{GREEK SMALL LETTER OMICRON} |
| Java, C# | \u03BF |
| Rust, Swift | \u{3BF} |
| Go, C, C++ | \u03BF |
| URL (percent-encoded) | %CE%BF |
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 OMICRON |
| Code point | U+03BF (decimal 959) |
| 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
- Ο U+039F Greek Capital Letter Omicron — Uppercase
Nearby in Greek and Coptic
- η U+03B7 Greek Small Letter Eta
- θ U+03B8 Greek Small Letter Theta
- ι U+03B9 Greek Small Letter Iota
- κ U+03BA Greek Small Letter Kappa
- λ U+03BB Greek Small Letter Lamda
- μ U+03BC Greek Small Letter Mu
- ν U+03BD Greek Small Letter Nu
- ξ U+03BE Greek Small Letter Xi
- 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
All 135 characters: Greek and Coptic.
Official reference
Questions people ask
- What is the HTML code for ο?
- Use the named entity ο, or ο (decimal) or ο (hex).
- What is the UTF-8 encoding of U+03BF?
- CE BF (hex), 2 bytes. In a URL it is %CE%BF.
- How do I write U+03BF in JavaScript or Python?
- JavaScript: \u03BF. Python: \u03BF.
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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