Hexadecimal (base 16) uses digits 0–9 and letters A–F. One hex digit represents four binary bits, making it compact for programmers.

What is FF in decimal?

FF hex = 15×16 + 15 = 255 decimal = 11111111 binary.

Why do developers use hex?

Hex is more readable than long binary strings. Memory addresses, colour codes (#RRGGBB), and machine code dumps commonly use hex.

How do I convert hex to binary?

Replace each hex digit with its 4-bit binary equivalent. F → 1111, A → 1010.

What comes after 9 in hex?

A (10), B (11), C (12), D (13), E (14), F (15).

Hexadecimal Table 00–FF — Hex to Decimal & Binary

Hexadecimal notation groups binary data into readable 4-bit chunks. This table maps every byte value from 0x00 to 0xFF to decimal and 8-bit binary. Use alongside our Number System Converter and hex conversion tutorial.

Hex Digits Reference

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

Full Hex Table (00–FF)

Hex	Decimal	Binary
00	0	00000000
01	1	00000001
02	2	00000010
03	3	00000011
04	4	00000100
05	5	00000101
06	6	00000110
07	7	00000111
08	8	00001000
09	9	00001001
0A	10	00001010
0B	11	00001011
0C	12	00001100
0D	13	00001101
0E	14	00001110
0F	15	00001111
10	16	00010000
11	17	00010001
12	18	00010010
13	19	00010011
14	20	00010100
15	21	00010101
16	22	00010110
17	23	00010111
18	24	00011000
19	25	00011001
1A	26	00011010
1B	27	00011011
1C	28	00011100
1D	29	00011101
1E	30	00011110
1F	31	00011111
20	32	00100000
21	33	00100001
22	34	00100010
23	35	00100011
24	36	00100100
25	37	00100101
26	38	00100110
27	39	00100111
28	40	00101000
29	41	00101001
2A	42	00101010
2B	43	00101011
2C	44	00101100
2D	45	00101101
2E	46	00101110
2F	47	00101111
30	48	00110000
31	49	00110001
32	50	00110010
33	51	00110011
34	52	00110100
35	53	00110101
36	54	00110110
37	55	00110111
38	56	00111000
39	57	00111001
3A	58	00111010
3B	59	00111011
3C	60	00111100
3D	61	00111101
3E	62	00111110
3F	63	00111111
40	64	01000000
41	65	01000001
42	66	01000010
43	67	01000011
44	68	01000100
45	69	01000101
46	70	01000110
47	71	01000111
48	72	01001000
49	73	01001001
4A	74	01001010
4B	75	01001011
4C	76	01001100
4D	77	01001101
4E	78	01001110
4F	79	01001111
50	80	01010000
51	81	01010001
52	82	01010010
53	83	01010011
54	84	01010100
55	85	01010101
56	86	01010110
57	87	01010111
58	88	01011000
59	89	01011001
5A	90	01011010
5B	91	01011011
5C	92	01011100
5D	93	01011101
5E	94	01011110
5F	95	01011111
60	96	01100000
61	97	01100001
62	98	01100010
63	99	01100011
64	100	01100100
65	101	01100101
66	102	01100110
67	103	01100111
68	104	01101000
69	105	01101001
6A	106	01101010
6B	107	01101011
6C	108	01101100
6D	109	01101101
6E	110	01101110
6F	111	01101111
70	112	01110000
71	113	01110001
72	114	01110010
73	115	01110011
74	116	01110100
75	117	01110101
76	118	01110110
77	119	01110111
78	120	01111000
79	121	01111001
7A	122	01111010
7B	123	01111011
7C	124	01111100
7D	125	01111101
7E	126	01111110
7F	127	01111111
80	128	10000000
81	129	10000001
82	130	10000010
83	131	10000011
84	132	10000100
85	133	10000101
86	134	10000110
87	135	10000111
88	136	10001000
89	137	10001001
8A	138	10001010
8B	139	10001011
8C	140	10001100
8D	141	10001101
8E	142	10001110
8F	143	10001111
90	144	10010000
91	145	10010001
92	146	10010010
93	147	10010011
94	148	10010100
95	149	10010101
96	150	10010110
97	151	10010111
98	152	10011000
99	153	10011001
9A	154	10011010
9B	155	10011011
9C	156	10011100
9D	157	10011101
9E	158	10011110
9F	159	10011111
A0	160	10100000
A1	161	10100001
A2	162	10100010
A3	163	10100011
A4	164	10100100
A5	165	10100101
A6	166	10100110
A7	167	10100111
A8	168	10101000
A9	169	10101001
AA	170	10101010
AB	171	10101011
AC	172	10101100
AD	173	10101101
AE	174	10101110
AF	175	10101111
B0	176	10110000
B1	177	10110001
B2	178	10110010
B3	179	10110011
B4	180	10110100
B5	181	10110101
B6	182	10110110
B7	183	10110111
B8	184	10111000
B9	185	10111001
BA	186	10111010
BB	187	10111011
BC	188	10111100
BD	189	10111101
BE	190	10111110
BF	191	10111111
C0	192	11000000
C1	193	11000001
C2	194	11000010
C3	195	11000011
C4	196	11000100
C5	197	11000101
C6	198	11000110
C7	199	11000111
C8	200	11001000
C9	201	11001001
CA	202	11001010
CB	203	11001011
CC	204	11001100
CD	205	11001101
CE	206	11001110
CF	207	11001111
D0	208	11010000
D1	209	11010001
D2	210	11010010
D3	211	11010011
D4	212	11010100
D5	213	11010101
D6	214	11010110
D7	215	11010111
D8	216	11011000
D9	217	11011001
DA	218	11011010
DB	219	11011011
DC	220	11011100
DD	221	11011101
DE	222	11011110
DF	223	11011111
E0	224	11100000
E1	225	11100001
E2	226	11100010
E3	227	11100011
E4	228	11100100
E5	229	11100101
E6	230	11100110
E7	231	11100111
E8	232	11101000
E9	233	11101001
EA	234	11101010
EB	235	11101011
EC	236	11101100
ED	237	11101101
EE	238	11101110
EF	239	11101111
F0	240	11110000
F1	241	11110001
F2	242	11110010
F3	243	11110011
F4	244	11110100
F5	245	11110101
F6	246	11110110
F7	247	11110111
F8	248	11111000
F9	249	11111001
FA	250	11111010
FB	251	11111011
FC	252	11111100
FD	253	11111101
FE	254	11111110
FF	255	11111111

Hexadecimal Table

Hex Digits Reference

Full Hex Table (00–FF)

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