Home: go to the homepage U+0000 to U+007F Basic Latin
Glyph for U+0021
Source: Noto Sans

U+0021 Exclamation Mark

U+0021 was added to Unicode in version 1.1 (1993). It belongs to the block U+0000 to U+007F Basic Latin in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Other Punctuation and is commonly used, that is, in no specific script. The character is also known as factorial and bang.

The glyph is not a composition. It has a Narrow East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. The glyph can, under circumstances, be confused with 6 other glyphs. In text U+0021 behaves as Exclamation/Interrogation regarding line breaks. It has type Sentence Terminal for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The CLDR project labels this character “exclamation mark” for use in screen reading software. It assigns additional tags, e.g. for search in emoji pickers: bang, exclamation, exclamation point.

The Wikipedia has the following information about this codepoint:

The exclamation mark, ! or exclamation point (American English) is a punctuation mark usually used after an interjection or exclamation to indicate strong feelings or to show emphasis. The exclamation mark often marks the end of a sentence, for example: "Watch out!". Similarly, a bare exclamation mark (with nothing before or after) is often used in warning signs. The exclamation mark is often used in writing to make a character seem as though they are shouting and/or excited/surprised.

Other uses include:

  • In mathematics, it denotes the factorial operation.
  • Several computer languages use ! at the beginning of an expression to denote logical negation. For example,!A means "the logical negation of A", also called "not A". This usage has spread to ordinary language (e.g., "!clue" means no-clue or clueless).
  • Some languages use ǃ, a symbol that looks like an exclamation mark, to denote a click consonant.


System Representation
UTF-8 21
UTF-16 00 21
UTF-32 00 00 00 21
URL-Quoted %21
HTML hex reference !
HTML named entity !
alias factorial
alias bang
AGL: Latin-1 exclam
AGL: Latin-2 exclam
AGL: Latin-3 exclam
AGL: Latin-4 exclam
AGL: Latin-5 exclam
Adobe Glyph List exclam
digraph !

Related Characters



Complete Record

Property Value
Age 1.1 (1993)
Unicode 1 Name
Block Basic Latin
General Category Other Punctuation
Script Common
Bidirectional Category Other Neutral
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Glyph for U+0021 Exclamation Mark
Simple Lowercase Mapping Glyph for U+0021 Exclamation Mark
Lowercase Mapping Glyph for U+0021 Exclamation Mark
Simple Uppercase Mapping Glyph for U+0021 Exclamation Mark
Uppercase Mapping Glyph for U+0021 Exclamation Mark
Simple Titlecase Mapping Glyph for U+0021 Exclamation Mark
Titlecase Mapping Glyph for U+0021 Exclamation Mark
Case Folding Glyph for U+0021 Exclamation Mark
ASCII Hex Digit
Bidi Control
Bidi Mirrored
Composition Exclusion
Case Ignorable
Changes When Casefolded
Changes When Casemapped
Changes When NFKC Casefolded
Changes When Lowercased
Changes When Titlecased
Changes When Uppercased
Full Composition Exclusion
Default Ignorable Code Point
Emoji Modifier Base
Emoji Component
Emoji Modifier
Emoji Presentation
Extended Pictographic
FC NFKC Closure Glyph for U+0021 Exclamation Mark
Grapheme Cluster Break Any
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
ID Continue
ID Start
IDS Binary Operator
IDS Trinary Operator and
ID_Compat_Math_Continue 0
ID_Compat_Math_Start 0
InCB None
Indic Mantra Category
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name
Join Control
Logical Order Exception
Noncharacter Code Point
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Glyph for U+0021 Exclamation Mark
NFKC Quick Check Yes
NFKC_SCF Glyph for U+0021 Exclamation Mark
NFKD Quick Check Yes
Other Alphabetic
Other Default Ignorable Code Point
Other Grapheme Extend
Other ID Continue
Other ID Start
Other Lowercase
Other Math
Other Uppercase
Prepended Concatenation Mark
Pattern Syntax
Pattern White Space
Quotation Mark
Regional Indicator
Sentence Break Sentence Terminal
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Variation Selector
Word Break Other
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD
Bidi Paired Bracket Glyph for U+0021 Exclamation Mark
Bidi Paired Bracket Type None
East Asian Width Narrow
Hangul Syllable Type Not Applicable
ISO 10646 Comment
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Exclamation/Interrogation
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+0021 Exclamation Mark
Script Extension
Vertical Orientation R