U+0410 "А" Cyrillic Capital Letter A Unicode Character

U+0410 "А" Cyrillic Capital Letter A is the uppercase form of the first letter in the Cyrillic alphabet, visually identical to the Latin capital letter A but distinct in its encoding and usage in over a dozen Slavic and non-Slavic languages, including Russian, Ukrainian, and Bulgarian. It derives from the Greek letter alpha and represents the open front unrounded vowel sound /a/, serving as a fundamental building block in written texts across Cyrillic script traditions while maintaining a unique code point to prevent confusion with its Latin counterpart in digital systems.

General Properties

Code Point	U+0410
Version Added	1.1
Name	Cyrillic Capital Letter A
Block	Cyrillic
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	А
HTML Hex Encoding	А
UTF-8 Encoding	0xD0 0x90
UTF-16 Encoding	0x0410
UTF-32 Encoding	0x00000410
C/C++/Java Escape	\u0410

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
Uppercase	Yes
Simple Lowercase Code Point	"а" U+0430 Cyrillic Small Letter A
Lowercase Code Point	"а" U+0430 Cyrillic Small Letter A
Simple Case Folding	"а" U+0430 Cyrillic Small Letter A
Case Folding	"а" U+0430 Cyrillic Small Letter A
Cased	Yes
Changes When Casefolded	Yes
Changes When Casemapped	Yes
Changes When Lowercased	Yes
Changes When NFKC Casefolded	Yes
NFKC Casefold	"а" U+0430 Cyrillic Small Letter A
NFKC Simple Casefold	"а" U+0430 Cyrillic Small Letter A
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	Upper