U+FF21 was added to Unicode in version 1.1 (1993). It belongs to the block Halfwidth and Fullwidth Forms in the Basic Multilingual Plane.

This character is a Uppercase Letter and is mainly used in the Latin script. It is related to its lowercase variant a.

The glyph is a Wide composition of the glyphs A. It has a Fullwidth East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. The glyph can, under circumstances, be confused with 40 other glyphs. In text U+FF21 behaves as Ideographic regarding line breaks. It has type Upper for sentence and ALetter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

A (named a /ˈeɪ/, plural aes) is the first letter and vowel in the ISO basic Latin alphabet. It is similar to the Ancient Greek letter alpha, from which it derives. The upper-case version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lower-case version can be written in two forms: the double-storey a and single-storey ɑ. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children. It is also found in italic type.


System Representation
UTF-16 FF 21
UTF-32 00 00 FF 21
URL-Quoted %EF%BC%A1
HTML-Escape A
Wrong windows-1252 Mojibake A
Encoding: EUC-KR (hex bytes) A3 C1
Encoding: JIS0208 (hex bytes) A3 C1

Related Characters

  • a


  • A
  • 𝐀
  • A
  • Æ
  • Α
  • А
  • Ӕ
  • Ꭺ
  • ᗅ
  • ᴀ
  • ℻
  • ꓮ
  • Ꜳ
  • Ꜵ
  • Ꜷ
  • Ꜹ
  • Ꜻ
  • Ꜽ
  • A
  • 𐊠
  • 𝐀
  • 𝐴
  • 𝑨
  • 𝒜
  • 𝓐
  • 𝔄
  • 𝔸
  • 𝕬
  • 𝖠
  • 𝗔
  • 𝘈
  • 𝘼
  • 𝙰
  • 𝚨
  • 𝛢
  • 𝜜
  • 𝝖
  • 𝞐
  • 🄐
  • 🜇


Complete Record

Property Value
Age (age) 1.1
Unicode 1 Name (na1)
Block (blk) Half_And_Full_Forms
General Category (gc) Uppercase Letter
Script (sc) Latin
Bidirectional Category (bc) Left To Right
Combining Class (ccc) Not Reordered
Decomposition Type (dt) Wide
Decomposition Mapping (dm) A
Lowercase (Lower)
Simple Lowercase Mapping (slc) a
Lowercase Mapping (lc) a
Uppercase (Upper)
Simple Uppercase Mapping (suc) A
Uppercase Mapping (uc) A
Simple Titlecase Mapping (stc) A
Titlecase Mapping (tc) A
Case Folding (cf) a
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Bidi Paired Bracket (bpb) A
Bidi Paired Bracket Type (bpt) None
Cased (Cased)
Composition Exclusion (CE)
Case Ignorable (CI)
Full Composition Exclusion (Comp_Ex)
Changes When Casefolded (CWCF)
Changes When Casemapped (CWCM)
Changes When NFKC Casefolded (CWKCF)
Changes When Lowercased (CWL)
Changes When Titlecased (CWT)
Changes When Uppercased (CWU)
Dash (Dash)
Deprecated (Dep)
Default Ignorable Code Point (DI)
Diacritic (Dia)
East Asian Width (ea) Fullwidth
Extender (Ext)
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
Hex Digit (Hex)
Hangul Syllable Type (hst) Not Applicable
Hyphen (Hyphen)
ID Continue (IDC)
Ideographic (Ideo)
ID Start (IDS)
IDS Binary Operator (IDSB)
IDS Trinary Operator and (IDST)
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Join Control (Join_C)
Jamo Short Name (JSN)
Joining Type (jt) Non Joining
Line Break (lb) Ideographic
Logical Order Exception (LOE)
Math (Math)
Noncharacter Code Point (NChar)
NFC Quick Check (NFC_QC) Yes
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) a
NFKC Quick Check (NFKC_QC) No
NFKD Quick Check (NFKD_QC) No
Numeric Type (nt) None
Numeric Value (nv) NaN
Other Alphabetic (OAlpha)
Other Default Ignorable Code Point (ODI)
Other Grapheme Extend (OGr_Ext)
Other ID Continue (OIDC)
Other ID Start (OIDS)
Other Lowercase (OLower)
Other Math (OMath)
Other Uppercase (OUpper)
Pattern Syntax (Pat_Syn)
Pattern White Space (Pat_WS)
Quotation Mark (QMark)
Radical (Radical)
Sentence Break (SB) Upper
Simple Case Folding (scf) a
Script Extension (scx) Latin
Soft Dotted (SD)
STerm (STerm)
Terminal Punctuation (Term)
Unified Ideograph (UIdeo)
Variation Selector (VS)
Word Break (WB) ALetter
White Space (WSpace)
XID Continue (XIDC)
XID Start (XIDS)
Expands On NFC (XO_NFC)
Expands On NFD (XO_NFD)
Expands On NFKC (XO_NFKC)
Expands On NFKD (XO_NFKD)