U+03B9
Iotaι
Iota is a monochrome text character from the Unicode Greek and Coptic block, listed here under Greek Letters. Copy it with one click, or use the hex, octal, decimal and HTML entity codes below to embed it in web pages, code, and documents.
Quick facts
- Unicode
- U+03B9
- Decimal
- 953
- Hex
- 0x03B9
- Octal
- 0o1671
Unicode identity
| Format | Value | Copy |
|---|---|---|
| Code pointOfficial Unicode notation | U+03B9 | |
| Official nameUnicodeData.txt, Unicode 18.0.0 | GREEK SMALL LETTER IOTA | |
| DecimalBase 10 | 953 | |
| HexadecimalBase 16 | 0x03B9 | |
| OctalBase 8 | 0o1671 | |
| BinaryBase 2 | 0000001110111001 | |
| General categoryLetter, lowercase | Ll | |
| Unicode blockU+0370–U+03FF | Greek and Coptic | |
| Plane | Basic Multilingual Plane (BMP, Plane 0) |
HTML & CSS
| Format | Value | Copy |
|---|---|---|
| HTML entity (decimal) | ι | |
| HTML entity (hex) | ι | |
| HTML entity (named) | ι | |
| CSS content escapeUse inside content: "…" | \03B9 | |
| URL encodedPercent-encoded UTF-8 | %CE%B9 |
Programming languages
| Format | Value | Copy |
|---|---|---|
| JavaScript / TypeScript | \u03B9 | |
| JSONUTF-16 surrogate pairs | \u03B9 | |
| Python | \u03B9 | |
| Java / C# / Kotlin | \u03B9 |
Byte encodings
| Format | Value | Copy |
|---|---|---|
| UTF-82 bytes | CE B9 | |
| UTF-16 (BE) | 03B9 | |
| UTF-32 (BE) | 000003B9 |
How to type Iota
Windows
Hold Alt and type +3B9 with the hex numeric keypad option enabled, or type 3B9 then press Alt+X in Word and most Office apps.
macOS
Enable the Unicode Hex Input keyboard, hold Option, and type 03B9. Or open Character Viewer (Control+Command+Space) and search "Iota".
Linux
Press Ctrl+Shift+U, type 3b9, then press Space or Enter in GTK apps. IBus and most terminals support the same sequence.
HTML, CSS & code
Paste the character directly, or use the escapes above: ι in HTML, \03B9 in CSS, and \u03B9 in JavaScript.
Official Unicode reference
- Character name
- GREEK SMALL LETTER IOTA
- Block
- Greek and Coptic (U+0370–U+03FF)
- General category
- Ll — Letter, lowercase
Data from the Unicode Character Database, version 18.0.0. See the official code chart for the Greek and Coptic block: U0370.pdf (PDF, unicode.org).
Frequently asked questions
How do I copy the Iota symbol?
Click the Copy button at the top of this page, or select ι and press Ctrl+C (Cmd+C on Mac). It is plain Unicode text, so it pastes into documents, chats, code, and design tools.
What is the Unicode code point for Iota?
Iota is U+03B9 (decimal 953, hexadecimal 0x03B9, octal 0o1671). It lives in the Greek and Coptic block (U+0370–U+03FF) of the Basic Multilingual Plane (BMP, Plane 0).
What is the official Unicode name of Iota?
The Unicode Standard (version 18.0.0) names this character "GREEK SMALL LETTER IOTA". Its General_Category is Ll (Letter, lowercase).
What is the HTML code for Iota?
Use ι or ι, or the named entity ι. In CSS, use content: "\03B9".
How do I type Iota in code?
JavaScript: "\u03B9". Python: "\u03B9". JSON and Java: "\u03B9". The UTF-8 byte sequence is CE B9.
Is Iota an emoji?
No. Iota is a text symbol and renders as a monochrome glyph in the current font. Some platforms may offer an emoji variant when U+FE0F is appended.