Free Online ToolUpdated September 2026

Binary Cheat Sheet — Full ASCII Table, Hex & Powers of 2

Complete binary cheat sheet: 128-entry ASCII table (binary, hex, decimal), hex↔binary lookup table, powers of 2 up to 2⁶⁴, and register limits.

Searchable 128-Character ASCII Table

Filter by decimal value, hex code, binary string, or character symbol.

Dec	Hex	Binary	Char	Description
0	00	00000000	Control	NUL (Null)
1	01	00000001	Control	SOH
2	02	00000010	Control	STX
3	03	00000011	Control	ETX
4	04	00000100	Control	EOT
5	05	00000101	Control	ENQ
6	06	00000110	Control	ACK
7	07	00000111	Control	BEL (Bell)
8	08	00001000	Control	BS (Backspace)
9	09	00001001	Control	HT (Tab)
10	0A	00001010	Control	LF (Line Feed)
11	0B	00001011	Control	VT (Vertical Tab)
12	0C	00001100	Control	FF (Form Feed)
13	0D	00001101	Control	CR (Carriage Return)
14	0E	00001110	Control	SO
15	0F	00001111	Control	SI
16	10	00010000	Control	DLE
17	11	00010001	Control	DC1
18	12	00010010	Control	DC2
19	13	00010011	Control	DC3
20	14	00010100	Control	DC4
21	15	00010101	Control	NAK
22	16	00010110	Control	SYN
23	17	00010111	Control	ETB
24	18	00011000	Control	CAN
25	19	00011001	Control	EM
26	1A	00011010	Control	SUB
27	1B	00011011	Control	ESC (Escape)
28	1C	00011100	Control	FS
29	1D	00011101	Control	GS
30	1E	00011110	Control	RS
31	1F	00011111	Control	US
32	20	00100000		Printable ASCII character
33	21	00100001	!	Printable ASCII character
34	22	00100010	"	Printable ASCII character
35	23	00100011	#	Printable ASCII character
36	24	00100100	$	Printable ASCII character
37	25	00100101	%	Printable ASCII character
38	26	00100110	&	Printable ASCII character
39	27	00100111	'	Printable ASCII character
40	28	00101000	(	Printable ASCII character
41	29	00101001	)	Printable ASCII character
42	2A	00101010	*	Printable ASCII character
43	2B	00101011	+	Printable ASCII character
44	2C	00101100	,	Printable ASCII character
45	2D	00101101	-	Printable ASCII character
46	2E	00101110	.	Printable ASCII character
47	2F	00101111	/	Printable ASCII character
48	30	00110000	0	Printable ASCII character
49	31	00110001	1	Printable ASCII character
50	32	00110010	2	Printable ASCII character
51	33	00110011	3	Printable ASCII character
52	34	00110100	4	Printable ASCII character
53	35	00110101	5	Printable ASCII character
54	36	00110110	6	Printable ASCII character
55	37	00110111	7	Printable ASCII character
56	38	00111000	8	Printable ASCII character
57	39	00111001	9	Printable ASCII character
58	3A	00111010	:	Printable ASCII character
59	3B	00111011	;	Printable ASCII character
60	3C	00111100	<	Printable ASCII character
61	3D	00111101	=	Printable ASCII character
62	3E	00111110	>	Printable ASCII character
63	3F	00111111	?	Printable ASCII character
64	40	01000000	@	Printable ASCII character
65	41	01000001	A	Printable ASCII character
66	42	01000010	B	Printable ASCII character
67	43	01000011	C	Printable ASCII character
68	44	01000100	D	Printable ASCII character
69	45	01000101	E	Printable ASCII character
70	46	01000110	F	Printable ASCII character
71	47	01000111	G	Printable ASCII character
72	48	01001000	H	Printable ASCII character
73	49	01001001	I	Printable ASCII character
74	4A	01001010	J	Printable ASCII character
75	4B	01001011	K	Printable ASCII character
76	4C	01001100	L	Printable ASCII character
77	4D	01001101	M	Printable ASCII character
78	4E	01001110	N	Printable ASCII character
79	4F	01001111	O	Printable ASCII character
80	50	01010000	P	Printable ASCII character
81	51	01010001	Q	Printable ASCII character
82	52	01010010	R	Printable ASCII character
83	53	01010011	S	Printable ASCII character
84	54	01010100	T	Printable ASCII character
85	55	01010101	U	Printable ASCII character
86	56	01010110	V	Printable ASCII character
87	57	01010111	W	Printable ASCII character
88	58	01011000	X	Printable ASCII character
89	59	01011001	Y	Printable ASCII character
90	5A	01011010	Z	Printable ASCII character
91	5B	01011011	[	Printable ASCII character
92	5C	01011100	\	Printable ASCII character
93	5D	01011101	]	Printable ASCII character
94	5E	01011110	^	Printable ASCII character
95	5F	01011111	_	Printable ASCII character
96	60	01100000	`	Printable ASCII character
97	61	01100001	a	Printable ASCII character
98	62	01100010	b	Printable ASCII character
99	63	01100011	c	Printable ASCII character
100	64	01100100	d	Printable ASCII character
101	65	01100101	e	Printable ASCII character
102	66	01100110	f	Printable ASCII character
103	67	01100111	g	Printable ASCII character
104	68	01101000	h	Printable ASCII character
105	69	01101001	i	Printable ASCII character
106	6A	01101010	j	Printable ASCII character
107	6B	01101011	k	Printable ASCII character
108	6C	01101100	l	Printable ASCII character
109	6D	01101101	m	Printable ASCII character
110	6E	01101110	n	Printable ASCII character
111	6F	01101111	o	Printable ASCII character
112	70	01110000	p	Printable ASCII character
113	71	01110001	q	Printable ASCII character
114	72	01110010	r	Printable ASCII character
115	73	01110011	s	Printable ASCII character
116	74	01110100	t	Printable ASCII character
117	75	01110101	u	Printable ASCII character
118	76	01110110	v	Printable ASCII character
119	77	01110111	w	Printable ASCII character
120	78	01111000	x	Printable ASCII character
121	79	01111001	y	Printable ASCII character
122	7A	01111010	z	Printable ASCII character
123	7B	01111011	{	Printable ASCII character
124	7C	01111100	\|	Printable ASCII character
125	7D	01111101	}	Printable ASCII character
126	7E	01111110	~	Printable ASCII character
127	7F	01111111	Control	DEL (Delete)

Powers of 2 Reference

Exponent	Value
2⁰	1
2¹	2
2²	4
2³	8
2⁴	16
2⁵	32
2⁶	64
2⁷	128
2⁸	256
2⁹	512
2¹⁰ (1 KB)	1,024
2¹⁶ (64 KB)	65,536
2²⁰ (1 MB)	1,048,576
2³² (4 GB)	4,294,967,296

Register Bound Ranges

Size	Unsigned	Signed (Two's Comp)
8-Bit	0 to 255	-128 to 127
16-Bit	0 to 65,535	-32,768 to 32,767
32-Bit	0 to 4.29B	-2.14B to 2.14B

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