ascii

0x00

NUL

ASCII control code 0x00 (NUL), decimal 0.

control

Quick facts

Hex: 0x00
Decimal: 0
Octal: 0o000
Binary: 0b00000000
Abbreviation: NUL
Kind: Control
Unicode name: <control>
Unicode twin: U+0000

Encodings & escapes

UTF-8
UTF-16
UTF-32
HTML decimal
HTML hex
JavaScript
Python
CSS
JSON
URL (UTF-8)
C / C++

Warnings

Null bytes often break C-style strings and text tools.

Developer notes

Null. Terminates C strings; often stripped or rejected in text pipelines.

Related

Unicode

U+0000

<control>

ASCII list

Control codes

Source

Unicode: 16.0.0
WHATWG: —