U+FF12 "２" Fullwidth Digit Two Unicode Character

U+FF12 "２" Fullwidth Digit Two is a typographic variant of the standard ASCII digit "2" designed to occupy the same width as a CJK (Chinese, Japanese, and Korean) character, typically twice as wide as a regular digit. This character belongs to the Halfwidth and Fullwidth Forms block and is used primarily in East Asian text processing to ensure visual alignment when digits appear alongside fullwidth ideographs and punctuation. It looks identical to the standard digit two but takes up a square monospaced cell, making it essential for formatting tables, documents, and user interfaces in languages like Japanese and Chinese where character spacing is strictly controlled.

General Properties

Code Point	U+FF12
Version Added	1.1
Name	Fullwidth Digit Two
Block	Halfwidth and Fullwidth Forms
General Category	Decimal Number
Canonical Combining Class	Not Reordered
Bidirectional Class	European Number
Decomposition Type	Wide
Decomposition Mapping	"2" U+0032 Digit Two

Encodings

HTML Decimal Encoding	２
HTML Hex Encoding	２
UTF-8 Encoding	0xEF 0xBC 0x92
UTF-16 Encoding	0xFF12
UTF-32 Encoding	0x0000FF12
C/C++/Java Escape	\uff12

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
Numeric Type	Decimal
Numeric Value	2
Line Break	Ideographic
East Asian Width	Fullwidth
Changes When NFKC Casefolded	Yes
NFKC Casefold	"2" U+0032 Digit Two
NFKC Simple Casefold	"2" U+0032 Digit Two
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
ID Continue	Yes
XID Continue	Yes
Hex Digit	Yes
Vertical Orientation	Upright
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Numeric
Sentence Break	Numeric