ASCII code 0 represents Null character. In binary it is 00000000, in hexadecimal it is 0, and in octal it is 0.

What character does ASCII 0 represent?

ASCII 0 is the NUL control character (Null character).

ASCII 0 = NUL

Null character

NUL

Null character

Decimal

Binary

00000000

Octal

Hexadecimal

Number

From Base

Binary (2)

0b0

Octal (8)

0o0

Decimal (10)

Hexadecimal (16)

0x0

Binary Bits

Common number base conversions
Decimal	Binary	Octal	Hex
0	0	0	0
1	1	1	1
8	1000	10	8
10	1010	12	A
16	10000	20	10
32	100000	40	20
64	1000000	100	40
127	1111111	177	7F
128	10000000	200	80
255	11111111	377	FF

ASCII characters near code 0
Code	Char	Hex	Description
1	SOH	1	Start of Heading
2	STX	2	Start of Text
3	ETX	3	End of Text
4	EOT	4	End of Transmission
5	ENQ	5	Enquiry