Home: go to the homepage U+0080 to U+00FF Latin-1 Supplement
Glyph for U+00B1
Source: Noto Sans

U+00B1 Plus-Minus Sign

U+00B1 was added in Unicode version 1.1 in 1993. It belongs to the block U+0080 to U+00FF Latin-1 Supplement in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Math Symbol and is commonly used, that is, in no specific script. The character is also known as biquintile (astrological aspect: 144°).

The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it is written as end of a European number, e.g., a currency symbol, from left to right. When changing direction it is not mirrored. U+00B1 prohibits a line break after it, if it is followed by a number.

The CLDR project calls this character “plus-minus” for use in screen reading software.

The Wikipedia has the following information about this codepoint:

The plus–minus sign, ±, is a symbol with multiple meanings:

  • In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction.
  • In statistics and experimental sciences, the sign commonly indicates the confidence interval or uncertainty bounding a range of possible errors in a measurement, often the standard deviation or standard error. The sign may also represent an inclusive range of values that a reading might have.
  • In chess, the sign indicates a clear advantage for the white player; the complementary minus-plus sign, , indicates the same advantage for the black player.

Other meanings occur in other fields, including medicine, engineering, chemistry, electronics, linguistics, and philosophy.


System Representation
UTF-8 C2 B1
UTF-16 00 B1
UTF-32 00 00 00 B1
URL-Quoted %C2%B1
HTML hex reference ±
Wrong windows-1252 Mojibake ±
HTML named entity ±
HTML named entity &plusmn
HTML named entity ±
HTML named entity ±
alias biquintile (astrological aspect: 144°)
Encoding: EUC-KR (hex bytes) A1 BE
Encoding: ISO-8859-13 (hex bytes) B1
Encoding: ISO-8859-15 (hex bytes) B1
Encoding: ISO-8859-16 (hex bytes) B1
Encoding: ISO-8859-7 (hex bytes) B1
Encoding: ISO-8859-8 (hex bytes) B1
Encoding: JIS0208 (hex bytes) A1 DE
Encoding: MACINTOSH (hex bytes) B1
Encoding: WINDOWS-1250 (hex bytes) B1
Encoding: WINDOWS-1251 (hex bytes) B1
Encoding: WINDOWS-1252 (hex bytes) B1
Encoding: WINDOWS-1253 (hex bytes) B1
Encoding: WINDOWS-1254 (hex bytes) B1
Encoding: WINDOWS-1255 (hex bytes) B1
Encoding: WINDOWS-1256 (hex bytes) B1
Encoding: WINDOWS-1257 (hex bytes) B1
Encoding: WINDOWS-1258 (hex bytes) B1
Encoding: X-MAC-CYRILLIC (hex bytes) B1
AGL: Latin-1 plusminus
AGL: Latin-2 plusminus
AGL: Latin-3 plusminus
AGL: Latin-4 plusminus
AGL: Latin-5 plusminus
Adobe Glyph List plusminus
digraph +-


Complete Record

Property Value
Age (age) 1.1 (1993)
Unicode Name (na) PLUS-MINUS SIGN
Unicode 1 Name (na1) PLUS-OR-MINUS SIGN
Block (blk) Latin-1 Supplement
General Category (gc) Math Symbol
Script (sc) Common
Bidirectional Category (bc) European Terminator
Combining Class (ccc) Not Reordered
Decomposition Type (dt) none
Decomposition Mapping (dm) Glyph for U+00B1 Plus-Minus Sign
Lowercase (Lower)
Simple Lowercase Mapping (slc) Glyph for U+00B1 Plus-Minus Sign
Lowercase Mapping (lc) Glyph for U+00B1 Plus-Minus Sign
Uppercase (Upper)
Simple Uppercase Mapping (suc) Glyph for U+00B1 Plus-Minus Sign
Uppercase Mapping (uc) Glyph for U+00B1 Plus-Minus Sign
Simple Titlecase Mapping (stc) Glyph for U+00B1 Plus-Minus Sign
Titlecase Mapping (tc) Glyph for U+00B1 Plus-Minus Sign
Case Folding (cf) Glyph for U+00B1 Plus-Minus Sign
ASCII Hex Digit (AHex)
Alphabetic (Alpha)
Bidi Control (Bidi_C)
Bidi Mirrored (Bidi_M)
Composition Exclusion (CE)
Case Ignorable (CI)
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)
Cased (Cased)
Full Composition Exclusion (Comp_Ex)
Default Ignorable Code Point (DI)
Dash (Dash)
Deprecated (Dep)
Diacritic (Dia)
Emoji Modifier Base (EBase)
Emoji Component (EComp)
Emoji Modifier (EMod)
Emoji Presentation (EPres)
Emoji (Emoji)
Extender (Ext)
Extended Pictographic (ExtPict)
FC NFKC Closure (FC_NFKC) Glyph for U+00B1 Plus-Minus Sign
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base)
Grapheme Extend (Gr_Ext)
Grapheme Link (Gr_Link)
Hex Digit (Hex)
Hyphen (Hyphen)
ID Continue (IDC)
ID Start (IDS)
IDS Binary Operator (IDSB)
IDS Trinary Operator and (IDST)
ID_Compat_Math_Continue (ID_Compat_Math_Continue) 0
ID_Compat_Math_Start (ID_Compat_Math_Start) 0
Ideographic (Ideo)
InCB (InCB) None
Indic Mantra Category (InMC)
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
Jamo Short Name (JSN)
Join Control (Join_C)
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) Glyph for U+00B1 Plus-Minus Sign
NFKC Quick Check (NFKC_QC) Yes
NFKC_SCF (NFKC_SCF) Glyph for U+00B1 Plus-Minus Sign
NFKD Quick Check (NFKD_QC) Yes
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)
Prepended Concatenation Mark (PCM)
Pattern Syntax (Pat_Syn)
Pattern White Space (Pat_WS)
Quotation Mark (QMark)
Regional Indicator (RI)
Radical (Radical)
Sentence Break (SB) Other
Soft Dotted (SD)
Sentence Terminal (STerm)
Terminal Punctuation (Term)
Unified Ideograph (UIdeo)
Variation Selector (VS)
Word Break (WB) Other
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)
Bidi Paired Bracket (bpb) Glyph for U+00B1 Plus-Minus Sign
Bidi Paired Bracket Type (bpt) None
East Asian Width (ea) ambiguous
Hangul Syllable Type (hst) Not Applicable
ISO 10646 Comment (isc)
Joining Group (jg) No_Joining_Group
Joining Type (jt) Non Joining
Line Break (lb) Prefix Numeric
Numeric Type (nt) none
Numeric Value (nv) not a number
Simple Case Folding (scf) Glyph for U+00B1 Plus-Minus Sign
Script Extension (scx)
Vertical Orientation (vo) U