Practical guide · reproducible examples

Complete ASCII table: decimal, hexadecimal and binary

ASCII assigns 128 values, from 0 to 127, to characters and control codes. Values 32–126 include space and printable characters; 127 is DEL. Search the table locally below.

All 128 codes

128 codes

7-bit ASCII: values 0–127
Dec	Hex	Bin	Character / name	Type
0	00	`0000000`	`NUL`	Control
1	01	`0000001`	`SOH`	Control
2	02	`0000010`	`STX`	Control
3	03	`0000011`	`ETX`	Control
4	04	`0000100`	`EOT`	Control
5	05	`0000101`	`ENQ`	Control
6	06	`0000110`	`ACK`	Control
7	07	`0000111`	`BEL`	Control
8	08	`0001000`	`BS`	Control
9	09	`0001001`	`HT`	Control
10	0A	`0001010`	`LF`	Control
11	0B	`0001011`	`VT`	Control
12	0C	`0001100`	`FF`	Control
13	0D	`0001101`	`CR`	Control
14	0E	`0001110`	`SO`	Control
15	0F	`0001111`	`SI`	Control
16	10	`0010000`	`DLE`	Control
17	11	`0010001`	`DC1`	Control
18	12	`0010010`	`DC2`	Control
19	13	`0010011`	`DC3`	Control
20	14	`0010100`	`DC4`	Control
21	15	`0010101`	`NAK`	Control
22	16	`0010110`	`SYN`	Control
23	17	`0010111`	`ETB`	Control
24	18	`0011000`	`CAN`	Control
25	19	`0011001`	`EM`	Control
26	1A	`0011010`	`SUB`	Control
27	1B	`0011011`	`ESC`	Control
28	1C	`0011100`	`FS`	Control
29	1D	`0011101`	`GS`	Control
30	1E	`0011110`	`RS`	Control
31	1F	`0011111`	`US`	Control
32	20	`0100000`	`SPACE`	Space
33	21	`0100001`	`!`	Printable
34	22	`0100010`	`"`	Printable
35	23	`0100011`	`#`	Printable
36	24	`0100100`	`$`	Printable
37	25	`0100101`	`%`	Printable
38	26	`0100110`	`&`	Printable
39	27	`0100111`	`'`	Printable
40	28	`0101000`	`(`	Printable
41	29	`0101001`	`)`	Printable
42	2A	`0101010`	`*`	Printable
43	2B	`0101011`	`+`	Printable
44	2C	`0101100`	`,`	Printable
45	2D	`0101101`	`-`	Printable
46	2E	`0101110`	`.`	Printable
47	2F	`0101111`	`/`	Printable
48	30	`0110000`	`0`	Printable
49	31	`0110001`	`1`	Printable
50	32	`0110010`	`2`	Printable
51	33	`0110011`	`3`	Printable
52	34	`0110100`	`4`	Printable
53	35	`0110101`	`5`	Printable
54	36	`0110110`	`6`	Printable
55	37	`0110111`	`7`	Printable
56	38	`0111000`	`8`	Printable
57	39	`0111001`	`9`	Printable
58	3A	`0111010`	`:`	Printable
59	3B	`0111011`	`;`	Printable
60	3C	`0111100`	`<`	Printable
61	3D	`0111101`	`=`	Printable
62	3E	`0111110`	`>`	Printable
63	3F	`0111111`	`?`	Printable
64	40	`1000000`	`@`	Printable
65	41	`1000001`	`A`	Printable
66	42	`1000010`	`B`	Printable
67	43	`1000011`	`C`	Printable
68	44	`1000100`	`D`	Printable
69	45	`1000101`	`E`	Printable
70	46	`1000110`	`F`	Printable
71	47	`1000111`	`G`	Printable
72	48	`1001000`	`H`	Printable
73	49	`1001001`	`I`	Printable
74	4A	`1001010`	`J`	Printable
75	4B	`1001011`	`K`	Printable
76	4C	`1001100`	`L`	Printable
77	4D	`1001101`	`M`	Printable
78	4E	`1001110`	`N`	Printable
79	4F	`1001111`	`O`	Printable
80	50	`1010000`	`P`	Printable
81	51	`1010001`	`Q`	Printable
82	52	`1010010`	`R`	Printable
83	53	`1010011`	`S`	Printable
84	54	`1010100`	`T`	Printable
85	55	`1010101`	`U`	Printable
86	56	`1010110`	`V`	Printable
87	57	`1010111`	`W`	Printable
88	58	`1011000`	`X`	Printable
89	59	`1011001`	`Y`	Printable
90	5A	`1011010`	`Z`	Printable
91	5B	`1011011`	`[`	Printable
92	5C	`1011100`	`\`	Printable
93	5D	`1011101`	`]`	Printable
94	5E	`1011110`	`^`	Printable
95	5F	`1011111`	`_`	Printable
96	60	`1100000`	`	Printable
97	61	`1100001`	`a`	Printable
98	62	`1100010`	`b`	Printable
99	63	`1100011`	`c`	Printable
100	64	`1100100`	`d`	Printable
101	65	`1100101`	`e`	Printable
102	66	`1100110`	`f`	Printable
103	67	`1100111`	`g`	Printable
104	68	`1101000`	`h`	Printable
105	69	`1101001`	`i`	Printable
106	6A	`1101010`	`j`	Printable
107	6B	`1101011`	`k`	Printable
108	6C	`1101100`	`l`	Printable
109	6D	`1101101`	`m`	Printable
110	6E	`1101110`	`n`	Printable
111	6F	`1101111`	`o`	Printable
112	70	`1110000`	`p`	Printable
113	71	`1110001`	`q`	Printable
114	72	`1110010`	`r`	Printable
115	73	`1110011`	`s`	Printable
116	74	`1110100`	`t`	Printable
117	75	`1110101`	`u`	Printable
118	76	`1110110`	`v`	Printable
119	77	`1110111`	`w`	Printable
120	78	`1111000`	`x`	Printable
121	79	`1111001`	`y`	Printable
122	7A	`1111010`	`z`	Printable
123	7B	`1111011`	`{`	Printable
124	7C	`1111100`	`\|`	Printable
125	7D	`1111101`	`}`	Printable
126	7E	`1111110`	`~`	Printable
127	7F	`1111111`	`DEL`	Control

Read a table row

Decimal, hexadecimal and binary are three ways to write the same number. The A row gives 65, 41 and 1000001; these are not three different characters. Control names appear instead of invisible controls: copying the letters LF therefore does not insert a line break. The 7-bit repertoire and assignments are documented in RFC 20.

Two conversions to check

Text	Dec	Hex
A	65	41
@	64	40
<3	60 51	3C 33

Example 1: @ has decimal value 64, which is 4 × 16 + 0 in hexadecimal. Example 2: <3 contains two characters; it is not a heart character. ♥ is outside this table. To find a literal digit, search U+0035 for “5”: entering 5 alone searches decimal value 5.

To check the basics before continuing with conversions, the computing quiz on Connaissances.com includes explained questions about bits and bytes. Then return to the table: an ASCII code identifies a character, whereas a byte describes a quantity of data. Resource in French.

Spaces and line endings

SPACE is 32; HT, 9, is a tab. LF is 10 and CR is 13. For a drawing, use spaces instead of tabs if you cannot control the destination’s tab stops. A file may use LF or CRLF for line endings: do not automatically count each byte as an extra line.

Why not 256 characters?

“Extended ASCII” is not one universal table. Accented letters require an identified encoding. In UTF-8, ASCII characters keep their one-byte values; other characters use multiple bytes, as specified in RFC 3629, section 3. This is neither a Windows Alt-code list nor a complete Unicode table.

ASCII / Unicode · Symbols