Image: Wikimedia Commons

null character

Control character whose bits are all 0

Entitycontrol character Unicode characterQ861529

Also known as 0x00 · NUL · \0 · null · NULL · ^@

Instance of: control character
, Unicode character
Part of: C0 and C1 control codes
, null-terminated string

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

The null character is a control character with the value zero. Many character sets include a code point for a null character – including Unicode, ASCII, Baudot, ITA2 codes, the C0 control code, and EBCDIC. In modern character sets, the null character has a code point value of zero which is generally translated to a single code unit with a zero value. For instance, in UTF-8, it is a single, zero byte.

Overview

All data

16 statements · 25% with external sources · numbers in brackets are citations

Unicode code point: 0000
1
Sources
1.web.archive.org/web/20071210014036/https://unicode.org/cldr/utility/character.jsp?a=0000
View statement on Wikidata ↗
Has use: sentinel value part of: null-terminated string
null byte injection
Unicode block: Basic Latin
Unicode character name: none
1
Sources
1.unicode.org/versions/latest/ch04.pdf
View statement on Wikidata ↗
Different from: null
HTML entity: none
1
Sources
1.“HTML Standard”html.spec.whatwg.org/multipage/syntax.html#character-referencesRetrieved 2026-09-22
View statement on Wikidata ↗

On other databases

6 identifiers linking null character across the web's reference databases

Data quality

statements

25%

externally sourced

Source last edited September 27, 2026. AIDB refreshes this page daily.

Suggest a fact or correction

Links

Use this data

curl https://aidb.si/api/v1/entities/Q861529

API docs, limits & keys

Cite this page

AIDB. (2026). null character (Q861529). Retrieved from https://aidb.si/e/null-character-Q861529