U+0441 "с" Cyrillic Small Letter Es Unicode Character

U+0441 "с" Cyrillic Small Letter Es is a lowercase letter used in the Cyrillic script, representing the voiceless alveolar fricative sound /s/, similar to the English letter "s". It is derived from the Greek letter sigma (Σ) and is found in many languages that use Cyrillic, including Russian, Ukrainian, Bulgarian, and Serbian. Visually, it often appears identical to the Latin lowercase letter "c" in many common fonts, which can lead to homoglyph confusion and potential security risks in digital text. As part of the Cyrillic block in Unicode, it occupies the code point U+0441 and is distinct from its uppercase counterpart, "С" (U+0421).

General Properties

Code Point	U+0441
Version Added	1.1
Name	Cyrillic Small Letter Es
Block	Cyrillic
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	с
HTML Hex Encoding	с
UTF-8 Encoding	0xD1 0x81
UTF-16 Encoding	0x0441
UTF-32 Encoding	0x00000441
C/C++/Java Escape	\u0441

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	"С" U+0421 Cyrillic Capital Letter Es
Simple Titlecase Code Point	"С" U+0421 Cyrillic Capital Letter Es
Uppercase Code Point	"С" U+0421 Cyrillic Capital Letter Es
Titlecase Code Point	"С" U+0421 Cyrillic Capital Letter Es
Cased	Yes
Changes When Casemapped	Yes
Changes When Titlecased	Yes
Changes When Uppercased	Yes
Script	Cyrillic
Script Extensions	Cyrillic
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