Binary, decimal and hex conversion table

200 in binary is 1100 1000 and in hex is C8; 255, the largest byte, is FF in hex.

ValuesFind my value

Binary, decimal and hex conversion table
Decimal	Binary	Hexadecimal	Octal
0	0000 0000	00	000
1	0000 0001	01	001
2	0000 0010	02	002
3	0000 0011	03	003
4	0000 0100	04	004
5	0000 0101	05	005
6	0000 0110	06	006
7	0000 0111	07	007
8	0000 1000	08	010
9	0000 1001	09	011
10	0000 1010	0A	012
11	0000 1011	0B	013
12	0000 1100	0C	014
13	0000 1101	0D	015
14	0000 1110	0E	016
15	0000 1111	0F	017
16	0001 0000	10	020
17	0001 0001	11	021
18	0001 0010	12	022
19	0001 0011	13	023
20	0001 0100	14	024
21	0001 0101	15	025
22	0001 0110	16	026
23	0001 0111	17	027
24	0001 1000	18	030
25	0001 1001	19	031
26	0001 1010	1A	032
27	0001 1011	1B	033
28	0001 1100	1C	034
29	0001 1101	1D	035
30	0001 1110	1E	036
31	0001 1111	1F	037
32	0010 0000	20	040
33	0010 0001	21	041
34	0010 0010	22	042
35	0010 0011	23	043
36	0010 0100	24	044
37	0010 0101	25	045
38	0010 0110	26	046
39	0010 0111	27	047
40	0010 1000	28	050
41	0010 1001	29	051
42	0010 1010	2A	052
43	0010 1011	2B	053
44	0010 1100	2C	054
45	0010 1101	2D	055
46	0010 1110	2E	056
47	0010 1111	2F	057
48	0011 0000	30	060
49	0011 0001	31	061
50	0011 0010	32	062
51	0011 0011	33	063
52	0011 0100	34	064
53	0011 0101	35	065
54	0011 0110	36	066
55	0011 0111	37	067
56	0011 1000	38	070
57	0011 1001	39	071
58	0011 1010	3A	072
59	0011 1011	3B	073
60	0011 1100	3C	074
61	0011 1101	3D	075
62	0011 1110	3E	076
63	0011 1111	3F	077
64	0100 0000	40	100
65	0100 0001	41	101
66	0100 0010	42	102
67	0100 0011	43	103
68	0100 0100	44	104
69	0100 0101	45	105
70	0100 0110	46	106
71	0100 0111	47	107
72	0100 1000	48	110
73	0100 1001	49	111
74	0100 1010	4A	112
75	0100 1011	4B	113
76	0100 1100	4C	114
77	0100 1101	4D	115
78	0100 1110	4E	116
79	0100 1111	4F	117
80	0101 0000	50	120
81	0101 0001	51	121
82	0101 0010	52	122
83	0101 0011	53	123
84	0101 0100	54	124
85	0101 0101	55	125
86	0101 0110	56	126
87	0101 0111	57	127
88	0101 1000	58	130
89	0101 1001	59	131
90	0101 1010	5A	132
91	0101 1011	5B	133
92	0101 1100	5C	134
93	0101 1101	5D	135
94	0101 1110	5E	136
95	0101 1111	5F	137
96	0110 0000	60	140
97	0110 0001	61	141
98	0110 0010	62	142
99	0110 0011	63	143
100	0110 0100	64	144
101	0110 0101	65	145
102	0110 0110	66	146
103	0110 0111	67	147
104	0110 1000	68	150
105	0110 1001	69	151
106	0110 1010	6A	152
107	0110 1011	6B	153
108	0110 1100	6C	154
109	0110 1101	6D	155
110	0110 1110	6E	156
111	0110 1111	6F	157
112	0111 0000	70	160
113	0111 0001	71	161
114	0111 0010	72	162
115	0111 0011	73	163
116	0111 0100	74	164
117	0111 0101	75	165
118	0111 0110	76	166
119	0111 0111	77	167
120	0111 1000	78	170
121	0111 1001	79	171
122	0111 1010	7A	172
123	0111 1011	7B	173
124	0111 1100	7C	174
125	0111 1101	7D	175
126	0111 1110	7E	176
127	0111 1111	7F	177

Need a value that is not in the table? Open the calculator : Binary Storage Unit Conversion →

How it is computed

Binary writes the number in powers of 2 (8 bits, grouped by four), hexadecimal in powers of 16 (digits 0–9 then A–F), octal in powers of 8. Each group of four bits maps to exactly one hex digit, which is why hex is the usual shorthand for bytes.

FAQ

How do I convert binary to hex by hand?+

Split the bits into groups of four from the right and replace each group by its hex digit: 1100 1000 → C8.

Why does a byte stop at 255?+

A byte has 8 bits, so it holds 2⁸ = 256 different values, numbered 0 to 255 (FF in hex).