Ι
U+0399 Ι

GREEK CAPITAL LETTER IOTA

Lu — Uppercase Letter
Greek
Basic Multilingual Plane (BMP)
921

Encoding Table

This table shows the exact bytes used to represent GREEK CAPITAL LETTER IOTA in each encoding. Unicode encodings (UTF-8, UTF-16, UTF-32) support every character; legacy encodings only cover a limited character set and show "not supported" when a character falls outside their range.

Encoding Bytes (Hex) Bytes (Decimal) Byte count
UTF-8 CE 99 206 153 2
UTF-16 LE 99 03 153 3 2
UTF-16 BE 03 99 3 153 2
UTF-32 LE 99 03 00 00 153 3 0 0 4
UTF-32 BE 00 00 03 99 0 0 3 153 4
ASCII not supported
Latin-1 (ISO-8859-1) not supported
Windows-1252 not supported
ISO-8859-2 (Latin-2) not supported
ISO-8859-5 (Cyrillic) not supported
KOI8-R not supported
Shift-JIS 83 A7 131 167 2
EUC-JP A6 A9 166 169 2
GBK A6 A9 166 169 2
Big5 A3 4C 163 76 2

Escape Sequences

How to reference this character in source code, markup, and URLs.

Ι
Ι
Ι
\399
\u0399
%CE%99
\u0399
921

View the glyph in different fonts and scripts on our sibling site.

View U+0399 on CharLookup.com ↗

UTF-8 Binary Breakdown

UTF-8 encodes this character as 2 bytes. The leading 110 prefix on byte 1 signals a 2-byte sequence. Bytes 2+ begin with 10 to mark them as continuation bytes.

Byte 1
1 1 0 0 1 1 1 0
CE
·
Byte 2
1 0 0 1 1 0 0 1
99
UTF-8: CE 99 · 2 bytes · Codepoint U+0399

Unicode Properties

Introduced in Unicode 1.1
L — Left-to-Right
Lowercase: U+03B9 GREEK SMALL LETTER IOTA

Nearby Characters in Greek and Coptic