U+0131 "ı" Latin Small Letter Dotless I Unicode Character

U+0131 "ı" Latin Small Letter Dotless I is a unique glyph used primarily in the Turkish and Azerbaijani alphabets to represent a close back unrounded vowel sound, distinct from the dotted "i" which denotes a different vowel. It shares a case relationship with its uppercase counterpart, the capital I with dot above (U+0130 "İ"), reversing the usual dot convention found in most Latin scripts. This character is essential for correct spelling and pronunciation in these languages, where the presence or absence of the dot changes the meaning of words, and it must be handled carefully in computing to avoid confusion with the regular Latin letter "i" or unintended capitalization errors.

General Properties

Code Point	U+0131
Version Added	1.1
Name	Latin Small Letter Dotless I
Block	Latin Extended-A
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	ı
HTML Hex Encoding	ı
UTF-8 Encoding	0xC4 0xB1
UTF-16 Encoding	0x0131
UTF-32 Encoding	0x00000131
C/C++/Java Escape	\u0131

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
East Asian Width	Ambiguous
Lowercase	Yes
Simple Uppercase Code Point	"I" U+0049 Latin Capital Letter I
Simple Titlecase Code Point	"I" U+0049 Latin Capital Letter I
Uppercase Code Point	"I" U+0049 Latin Capital Letter I
Titlecase Code Point	"I" U+0049 Latin Capital Letter I
Cased	Yes
Changes When Casemapped	Yes
Changes When Titlecased	Yes
Changes When Uppercased	Yes
Script	Latin
Script Extensions	Latin
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Alphabetic letter
Sentence Break	Lower