Hex to Binary Converter

Tip: enter one number to see the digit-by-digit steps, decimal and octal. Several numbers (one per line), hex fractions like 2E.6 and prefixes like 0x1F also work.

Output Prefix Leading zeros Group Split on

Output appears here

Tool Name	Explanation
Related Developer Tools
Binary to Hex Converter	Groups binary bits in fours and converts them into hex digits.
Octal to Binary Converter	Expands each octal digit into 3 bits with steps, decimal and hex.
Text to Hex Converter	Converts text into hexadecimal bytes with separator and prefix options.
Hex to Text Converter	Decodes hexadecimal bytes back into readable text.
Binary to Decimal Converter	Converts binary numbers into decimal with bit-by-bit steps, hex and octal.
Decimal to Binary Converter	Converts decimal numbers into binary with steps, 2's complement and hex.
Octal to Text Converter	Decodes octal bytes (110 145 154 154 157) back into readable text.
Text to Octal Converter	Converts text into octal bytes with separator, digits and prefix options.
Binary to Text Converter	Decodes binary (0s and 1s) back into readable text.
Text to Binary Converter	Converts text into 8-bit or 7-bit binary (0s and 1s) instantly.
Base64 Encode / Decode	Encodes text or files to Base64 and decodes Base64 strings instantly.
JSON to Go Struct Converter	Generates idiomatic Go structs with json tags from any JSON payload.
JSON to TypeScript Interface	Generates typed TypeScript interfaces from any JSON payload.
HTML to JSX Converter	Converts HTML markup into valid React JSX (className, self-closing tags, style objects).
TOML to JSON Converter	Transforms TOML config files into clean, formatted JSON or YAML.

Example 1: Convert D7 to Binary

Hex digit	Binary (4 bits)	Part
D	1101	integer
7	0111	integer

Join 1101 and 0111: 11010111.

Example 2: Convert 2E.6 to Binary

Hex digit	Binary (4 bits)	Part
2	0010	integer
E	1110	integer
6	0110	fraction

Join 0010 1110 . 0110 and drop the leading and trailing zeros: 101110.011.

Hex Digit to Binary Table (0-F)

Hex digit	Binary (4-bit)	Decimal
0	`0000`	0
1	`0001`	1
2	`0010`	2
3	`0011`	3
4	`0100`	4
5	`0101`	5
6	`0110`	6
7	`0111`	7
8	`1000`	8
9	`1001`	9
A	`1010`	10
B	`1011`	11
C	`1100`	12
D	`1101`	13
E	`1110`	14
F	`1111`	15

Hex to Binary Table (00-FF)

Hex (2-digit)	Binary	Decimal	Octal
00	`0`	0	0
01	`1`	1	1
02	`10`	2	2
03	`11`	3	3
04	`100`	4	4
05	`101`	5	5
06	`110`	6	6
07	`111`	7	7
08	`1000`	8	10
09	`1001`	9	11
0A	`1010`	10	12
0B	`1011`	11	13
0C	`1100`	12	14
0D	`1101`	13	15
0E	`1110`	14	16
0F	`1111`	15	17
10	`10000`	16	20
11	`10001`	17	21
12	`10010`	18	22
13	`10011`	19	23
14	`10100`	20	24
15	`10101`	21	25
16	`10110`	22	26
17	`10111`	23	27
18	`11000`	24	30
19	`11001`	25	31
1A	`11010`	26	32
1B	`11011`	27	33
1C	`11100`	28	34
1D	`11101`	29	35
1E	`11110`	30	36
1F	`11111`	31	37
20	`100000`	32	40
21	`100001`	33	41
22	`100010`	34	42
23	`100011`	35	43
24	`100100`	36	44
25	`100101`	37	45
26	`100110`	38	46
27	`100111`	39	47
28	`101000`	40	50
29	`101001`	41	51
2A	`101010`	42	52
2B	`101011`	43	53
2C	`101100`	44	54
2D	`101101`	45	55
2E	`101110`	46	56
2F	`101111`	47	57
30	`110000`	48	60
31	`110001`	49	61
32	`110010`	50	62
33	`110011`	51	63
34	`110100`	52	64
35	`110101`	53	65
36	`110110`	54	66
37	`110111`	55	67
38	`111000`	56	70
39	`111001`	57	71
3A	`111010`	58	72
3B	`111011`	59	73
3C	`111100`	60	74
3D	`111101`	61	75
3E	`111110`	62	76
3F	`111111`	63	77
40	`1000000`	64	100
41	`1000001`	65	101
42	`1000010`	66	102
43	`1000011`	67	103
44	`1000100`	68	104
45	`1000101`	69	105
46	`1000110`	70	106
47	`1000111`	71	107
48	`1001000`	72	110
49	`1001001`	73	111
4A	`1001010`	74	112
4B	`1001011`	75	113
4C	`1001100`	76	114
4D	`1001101`	77	115
4E	`1001110`	78	116
4F	`1001111`	79	117
50	`1010000`	80	120
51	`1010001`	81	121
52	`1010010`	82	122
53	`1010011`	83	123
54	`1010100`	84	124
55	`1010101`	85	125
56	`1010110`	86	126
57	`1010111`	87	127
58	`1011000`	88	130
59	`1011001`	89	131
5A	`1011010`	90	132
5B	`1011011`	91	133
5C	`1011100`	92	134
5D	`1011101`	93	135
5E	`1011110`	94	136
5F	`1011111`	95	137
60	`1100000`	96	140
61	`1100001`	97	141
62	`1100010`	98	142
63	`1100011`	99	143
64	`1100100`	100	144
65	`1100101`	101	145
66	`1100110`	102	146
67	`1100111`	103	147
68	`1101000`	104	150
69	`1101001`	105	151
6A	`1101010`	106	152
6B	`1101011`	107	153
6C	`1101100`	108	154
6D	`1101101`	109	155
6E	`1101110`	110	156
6F	`1101111`	111	157
70	`1110000`	112	160
71	`1110001`	113	161
72	`1110010`	114	162
73	`1110011`	115	163
74	`1110100`	116	164
75	`1110101`	117	165
76	`1110110`	118	166
77	`1110111`	119	167
78	`1111000`	120	170
79	`1111001`	121	171
7A	`1111010`	122	172
7B	`1111011`	123	173
7C	`1111100`	124	174
7D	`1111101`	125	175
7E	`1111110`	126	176
7F	`1111111`	127	177
80	`10000000`	128	200
81	`10000001`	129	201
82	`10000010`	130	202
83	`10000011`	131	203
84	`10000100`	132	204
85	`10000101`	133	205
86	`10000110`	134	206
87	`10000111`	135	207
88	`10001000`	136	210
89	`10001001`	137	211
8A	`10001010`	138	212
8B	`10001011`	139	213
8C	`10001100`	140	214
8D	`10001101`	141	215
8E	`10001110`	142	216
8F	`10001111`	143	217
90	`10010000`	144	220
91	`10010001`	145	221
92	`10010010`	146	222
93	`10010011`	147	223
94	`10010100`	148	224
95	`10010101`	149	225
96	`10010110`	150	226
97	`10010111`	151	227
98	`10011000`	152	230
99	`10011001`	153	231
9A	`10011010`	154	232
9B	`10011011`	155	233
9C	`10011100`	156	234
9D	`10011101`	157	235
9E	`10011110`	158	236
9F	`10011111`	159	237
A0	`10100000`	160	240
A1	`10100001`	161	241
A2	`10100010`	162	242
A3	`10100011`	163	243
A4	`10100100`	164	244
A5	`10100101`	165	245
A6	`10100110`	166	246
A7	`10100111`	167	247
A8	`10101000`	168	250
A9	`10101001`	169	251
AA	`10101010`	170	252
AB	`10101011`	171	253
AC	`10101100`	172	254
AD	`10101101`	173	255
AE	`10101110`	174	256
AF	`10101111`	175	257
B0	`10110000`	176	260
B1	`10110001`	177	261
B2	`10110010`	178	262
B3	`10110011`	179	263
B4	`10110100`	180	264
B5	`10110101`	181	265
B6	`10110110`	182	266
B7	`10110111`	183	267
B8	`10111000`	184	270
B9	`10111001`	185	271
BA	`10111010`	186	272
BB	`10111011`	187	273
BC	`10111100`	188	274
BD	`10111101`	189	275
BE	`10111110`	190	276
BF	`10111111`	191	277
C0	`11000000`	192	300
C1	`11000001`	193	301
C2	`11000010`	194	302
C3	`11000011`	195	303
C4	`11000100`	196	304
C5	`11000101`	197	305
C6	`11000110`	198	306
C7	`11000111`	199	307
C8	`11001000`	200	310
C9	`11001001`	201	311
CA	`11001010`	202	312
CB	`11001011`	203	313
CC	`11001100`	204	314
CD	`11001101`	205	315
CE	`11001110`	206	316
CF	`11001111`	207	317
D0	`11010000`	208	320
D1	`11010001`	209	321
D2	`11010010`	210	322
D3	`11010011`	211	323
D4	`11010100`	212	324
D5	`11010101`	213	325
D6	`11010110`	214	326
D7	`11010111`	215	327
D8	`11011000`	216	330
D9	`11011001`	217	331
DA	`11011010`	218	332
DB	`11011011`	219	333
DC	`11011100`	220	334
DD	`11011101`	221	335
DE	`11011110`	222	336
DF	`11011111`	223	337
E0	`11100000`	224	340
E1	`11100001`	225	341
E2	`11100010`	226	342
E3	`11100011`	227	343
E4	`11100100`	228	344
E5	`11100101`	229	345
E6	`11100110`	230	346
E7	`11100111`	231	347
E8	`11101000`	232	350
E9	`11101001`	233	351
EA	`11101010`	234	352
EB	`11101011`	235	353
EC	`11101100`	236	354
ED	`11101101`	237	355
EE	`11101110`	238	356
EF	`11101111`	239	357
F0	`11110000`	240	360
F1	`11110001`	241	361
F2	`11110010`	242	362
F3	`11110011`	243	363
F4	`11110100`	244	364
F5	`11110101`	245	365
F6	`11110110`	246	366
F7	`11110111`	247	367
F8	`11111000`	248	370
F9	`11111001`	249	371
FA	`11111010`	250	372
FB	`11111011`	251	373
FC	`11111100`	252	374
FD	`11111101`	253	375
FE	`11111110`	254	376
FF	`11111111`	255	377

Common Hex Numbers in Binary

Number	Hex	Binary	Decimal
Subnet mask octet (/25)	80	`10000000`	128
Subnet mask octet (/26)	C0	`11000000`	192
Subnet mask octet (/27)	E0	`11100000`	224
Subnet mask octet (/28)	F0	`11110000`	240
Subnet mask octet (/29)	F8	`11111000`	248
Subnet mask octet (/30)	FC	`11111100`	252
Subnet mask octet (/31)	FE	`11111110`	254
Subnet mask octet (/24)	FF	`11111111`	255
SSH port	16	`10110`	22
SMTP port	19	`11001`	25
DNS port	35	`110101`	53
HTTP port	50	`1010000`	80
HTTPS port	1BB	`110111011`	443
MySQL port	CEA	`110011101010`	3306
PostgreSQL port	1538	`1010100111000`	5432
Alternate HTTP port	1F90	`1111110010000`	8080
Loopback first octet	7F	`1111111`	127
Private IP first octet (10.x.x.x)	A	`1010`	10
Private IP first octet (192.168.x.x)	C0	`11000000`	192
Private IP second octet (192.168.x.x)	A8	`10101000`	168
Ten	A	`1010`	10
One hundred	64	`1100100`	100
One thousand	3E8	`1111101000`	1000
Max signed 8-bit	7F	`1111111`	127
Max unsigned 8-bit	FF	`11111111`	255
Values in a byte	100	`100000000`	256
One kibibyte	400	`10000000000`	1024
Page size	1000	`1000000000000`	4096
Max signed 16-bit	7FFF	`111111111111111`	32767
Max unsigned 16-bit	FFFF	`1111111111111111`	65535
Values in 16 bits	10000	`10000000000000000`	65536
Max RGB hex FFFFFF	FFFFFF	`111111111111111111111111`	16777215
Max signed 32-bit	7FFFFFFF	`1111111111111111111111111111111`	2147483647
Max unsigned 32-bit	FFFFFFFF	`11111111111111111111111111111111`	4294967295
Days from 1970 to 2000	2ACD	`10101011001101`	10957
ASCII letter A	41	`1000001`	65
ASCII letter a	61	`1100001`	97
ASCII digit 0	30	`110000`	48
ASCII space	20	`100000`	32
ASCII line feed	A	`1010`	10

Common Hex Colors in Binary

Color	Hex	Binary (R G B)
Black	#000000	`00000000 00000000 00000000`
White	#FFFFFF	`11111111 11111111 11111111`
Red	#FF0000	`11111111 00000000 00000000`
Green (lime)	#00FF00	`00000000 11111111 00000000`
Blue	#0000FF	`00000000 00000000 11111111`
Yellow	#FFFF00	`11111111 11111111 00000000`
Cyan	#00FFFF	`00000000 11111111 11111111`
Magenta	#FF00FF	`11111111 00000000 11111111`
Gray	#808080	`10000000 10000000 10000000`
Silver	#C0C0C0	`11000000 11000000 11000000`
Orange	#FFA500	`11111111 10100101 00000000`
Navy	#000080	`00000000 00000000 10000000`
Teal	#008080	`00000000 10000000 10000000`
Maroon	#800000	`10000000 00000000 00000000`
Olive	#808000	`10000000 10000000 00000000`
Purple	#800080	`10000000 00000000 10000000`

Hex Fractions in Binary

Hex	Binary
0.8	`0.1`
0.4	`0.01`
0.2	`0.001`
0.1	`0.0001`
0.A	`0.101`
0.C	`0.11`
1.8	`1.1`
2.4	`10.01`
F.F	`1111.1111`
2E.6	`101110.011`
A.A	`1010.101`
FF.FF	`11111111.11111111`
0.0F	`0.00001111`
0.19999	`0.00011001100110011001`

Technical Q&A / FAQ Matrix

Technical Developer Question	Exact Solution & Code Snippet
How do I convert hex to binary in JavaScript?	`parseInt('D7', 16).toString(2)`
How do I convert hex to binary in Python?	`format(int('D7', 16), 'b')`
How do I convert hex to binary in Go?	`n, _ := strconv.ParseInt("D7", 16, 64); fmt.Println(strconv.FormatInt(n, 2))`
How do I convert hex to binary in Java?	`Integer.toBinaryString(Integer.parseInt("D7", 16))`
How do I convert hex to binary in C#?	`Convert.ToString(Convert.ToInt32("D7", 16), 2)`
How do I convert hex to binary in PHP?	`echo decbin(hexdec('D7'));`
How do I convert hex to binary in Rust?	`format!("{:b}", i64::from_str_radix("D7", 16).unwrap())`
How do I convert hex to binary on Linux?	`echo 'ibase=16; obase=2; D7' \| bc`
How do I convert hex to binary by hand?	`Replace each hex digit with its 4-bit group. D = 1101 and 7 = 0111, so D7 is 11010111.`
Why does each hex digit become exactly 4 bits?	`Hex is base 16 and 16 = 2^4, so one hex digit holds 4 bits. Two hex digits make one byte.`
What is the binary value of hex FF?	`11111111. Each F is 1111, so FF is 8 ones, which is 255 in decimal.`
How do I convert a hex fraction to binary?	`Convert each digit after the point to 4 bits. 0.A in hex is 0.1010 in binary, which is 0.101 after dropping trailing zeros.`
How do I read a hex color in binary?	`Each channel is one byte. #FF8000 is FF 80 00, which is 11111111 10000000 00000000.`
Do leading zeros change the binary result?	`The value stays the same. The tool drops leading zeros by default, or keeps full 4-bit groups when Leading zeros is set to Keep.`
Why do I get an invalid character error?	`Hex uses only 0-9 and A-F, in upper or lower case. Remove other letters and stray symbols. A 0x prefix, spaces and underscores are ignored.`
How do I convert binary back to hex?	`Group the bits in fours from the right. In JavaScript: parseInt('11010111', 2).toString(16) gives d7.`

Hex to Binary Converter

Hex to Binary Converter

Example 1: Convert D7 to Binary

Example 2: Convert 2E.6 to Binary

Hex Digit to Binary Table (0-F)

Hex to Binary Table (00-FF)

Common Hex Numbers in Binary

Common Hex Colors in Binary

Hex Fractions in Binary

Technical Q&A / FAQ Matrix

Core Hubs