7-bit ASCII Character Codes
7-bit ASCII Character Codes
The ASCII table contains letters, numbers, control characters, and other symbols. Each character is assigned a unique 7-bit code. ASCII is an acronym for American Standard Code for Information Interchange.
Decimal | Octal | Hex | Binary | Value | Description | Carret notation | Escape sequence in C |
---|---|---|---|---|---|---|---|
000 | 000 | 00 | 0000 0000 | NUL | "null" character | ^@ | \0 |
001 | 001 | 01 | 0000 0001 | SOH | start of header | ^A | |
002 | 002 | 02 | 0000 0010 | STX | start of text | ^B | |
003 | 003 | 03 | 0000 0011 | ETX | end of text | ^C | |
004 | 004 | 04 | 0000 0100 | EOT | end of transmission | ^D | |
005 | 005 | 05 | 0000 0101 | ENQ | enquiry | ^E | |
006 | 006 | 06 | 0000 0110 | ACK | acknowledgment | ^F | |
007 | 007 | 07 | 0000 0111 | BEL | bell | ^G | \a |
008 | 010 | 08 | 0000 1000 | BS | backspace | ^H | \b |
009 | 011 | 09 | 0000 1001 | HT | horizontal tab | ^I | \h |
010 | 012 | 0A | 0000 1010 | LF | line feed | ^J | \n |
011 | 013 | 0B | 0000 1011 | VT | vertical tab | ^K | \v |
012 | 014 | 0C | 0000 1100 | FF | form feed | ^L | \f |
013 | 015 | 0D | 0000 1101 | CR | carriage return | ^M | \r |
014 | 016 | 0E | 0000 1110 | SO | shift out | ^N | |
015 | 017 | 0F | 0000 1111 | SI | shift in | ^O | |
016 | 020 | 10 | 0001 0000 | DLE | data link escape | ^P | |
017 | 021 | 11 | 0001 0001 | DC1 | device control 1 (XON) | ^Q | |
018 | 022 | 12 | 0001 0010 | DC2 | device control 2 | ^R | |
019 | 023 | 13 | 0001 0011 | DC3 | device control 3 (XOFF) | ^S | |
020 | 024 | 14 | 0001 0100 | DC4 | device control 4 | ^T | |
021 | 025 | 15 | 0001 0101 | NAK | negative acknowledgement | ^U | |
022 | 026 | 16 | 0001 0110 | SYN | synchronous idle | ^V | |
023 | 027 | 17 | 0001 0111 | ETB | end of transmission block | ^W | |
024 | 030 | 18 | 0001 1000 | CAN | cancel | ^X | |
025 | 031 | 19 | 0001 1001 | EM | end of medium | ^Y | |
026 | 032 | 1A | 0001 1010 | SUB | substitute | ^Z | |
027 | 033 | 1B | 0001 1011 | ESC | escape | ^[ | \e |
028 | 034 | 1C | 0001 1100 | FS | file separator | ^\ | |
029 | 035 | 1D | 0001 1101 | GS | group separator | ^] | |
030 | 036 | 1E | 0001 1110 | RS | request to send/record separator | ^^ | |
031 | 037 | 1F | 0001 1111 | US | unit separator | ^_ | |
032 | 040 | 20 | 0010 0000 | SP | space | ^? | |
033 | 041 | 21 | 0010 0001 | ! | exclamation mark | ||
034 | 042 | 22 | 0010 0010 | " | double quote | ||
035 | 043 | 23 | 0010 0011 | # | number sign | ||
036 | 044 | 24 | 0010 0100 | $ | dollar sign | ||
037 | 045 | 25 | 0010 0101 | % | percent | ||
038 | 046 | 26 | 0010 0110 | & | ampersand | ||
039 | 047 | 27 | 0010 0111 | ' | single quote | ||
040 | 050 | 28 | 0010 1000 | ( | left/opening parenthesis | ||
041 | 051 | 29 | 0010 1001 | ) | right/closing parenthesis | ||
042 | 052 | 2A | 0010 1010 | * | asterisk | ||
043 | 053 | 2B | 0010 1011 | + | plus | ||
044 | 054 | 2C | 0010 1100 | , | comma | ||
045 | 055 | 2D | 0010 1101 | - | minus or dash | ||
046 | 056 | 2E | 0010 1110 | . | dot | ||
047 | 057 | 2F | 0010 1111 | / | forward slash | ||
048 | 060 | 30 | 0011 0000 | 0 | |||
049 | 061 | 31 | 0011 0001 | 1 | |||
050 | 062 | 32 | 0011 0010 | 2 | |||
051 | 063 | 33 | 0011 0011 | 3 | |||
052 | 064 | 34 | 0011 0100 | 4 | |||
053 | 065 | 35 | 0011 0101 | 5 | |||
054 | 066 | 36 | 0011 0110 | 6 | |||
055 | 067 | 37 | 0011 0111 | 7 | |||
056 | 070 | 38 | 0011 1000 | 8 | |||
057 | 071 | 39 | 0011 1001 | 9 | |||
058 | 072 | 3A | 0011 1010 | : | colon | ||
059 | 073 | 3B | 0011 1011 | ; | semi-colon | ||
060 | 074 | 3C | 0011 1100 | < | less than | ||
061 | 075 | 3D | 0011 1101 | = | equal sign | ||
062 | 076 | 3E | 0011 1110 | > | greater than | ||
063 | 077 | 3F | 0011 1111 | ? | question mark | ||
064 | 100 | 40 | 0100 0000 | @ | 'at' symbol | ||
065 | 101 | 41 | 0100 0001 | A | |||
066 | 102 | 42 | 0100 0010 | B | |||
067 | 103 | 43 | 0100 0011 | C | |||
068 | 104 | 44 | 0100 0100 | D | |||
069 | 105 | 45 | 0100 0101 | E | |||
070 | 106 | 46 | 0100 0110 | F | |||
071 | 107 | 47 | 0100 0111 | G | |||
072 | 110 | 48 | 0100 1000 | H | |||
073 | 111 | 49 | 0100 1001 | I | |||
074 | 112 | 4A | 0100 1010 | J | |||
075 | 113 | 4B | 0100 1011 | K | |||
076 | 114 | 4C | 0100 1100 | L | |||
077 | 115 | 4D | 0100 1101 | M | |||
078 | 116 | 4E | 0100 1110 | N | |||
079 | 117 | 4F | 0100 1111 | O | |||
080 | 120 | 50 | 0101 0000 | P | |||
081 | 121 | 51 | 0101 0001 | Q | |||
082 | 122 | 52 | 0101 0010 | R | |||
083 | 123 | 53 | 0101 0011 | S | |||
084 | 124 | 54 | 0101 0100 | T | |||
085 | 125 | 55 | 0101 0101 | U | |||
086 | 126 | 56 | 0101 0110 | V | |||
087 | 127 | 57 | 0101 0111 | W | |||
088 | 130 | 58 | 0101 1000 | X | |||
089 | 131 | 59 | 0101 1001 | Y | |||
090 | 132 | 5A | 0101 1010 | Z | |||
091 | 133 | 5B | 0101 1011 | [ | left/opening bracket | ||
092 | 134 | 5C | 0101 1100 | \ | back slash | ||
093 | 135 | 5D | 0101 1101 | ] | right/closing bracket | ||
094 | 136 | 5E | 0101 1110 | ^ | caret/circumflex | ||
095 | 137 | 5F | 0101 1111 | _ | underscore | ||
096 | 140 | 60 | 0110 0000 | ` | |||
097 | 141 | 61 | 0110 0001 | a | |||
098 | 142 | 62 | 0110 0010 | b | |||
099 | 143 | 63 | 0110 0011 | c | |||
100 | 144 | 64 | 0110 0100 | d | |||
101 | 145 | 65 | 0110 0101 | e | |||
102 | 146 | 66 | 0110 0110 | f | |||
103 | 147 | 67 | 0110 0111 | g | |||
104 | 150 | 68 | 0110 1000 | h | |||
105 | 151 | 69 | 0110 1001 | i | |||
106 | 152 | 6A | 0110 1010 | j | |||
107 | 153 | 6B | 0110 1011 | k | |||
108 | 154 | 6C | 0110 1100 | l | |||
109 | 155 | 6D | 0110 1101 | m | |||
110 | 156 | 6E | 0110 1110 | n | |||
111 | 157 | 6F | 0110 1111 | o | |||
112 | 160 | 70 | 0111 0000 | p | |||
113 | 161 | 71 | 0111 0001 | q | |||
114 | 162 | 72 | 0111 0010 | r | |||
115 | 163 | 73 | 0111 0011 | s | |||
116 | 164 | 74 | 0111 0100 | t | |||
117 | 165 | 75 | 0111 0101 | u | |||
118 | 166 | 76 | 0111 0110 | v | |||
119 | 167 | 77 | 0111 0111 | w | |||
120 | 170 | 78 | 0111 1000 | x | |||
121 | 171 | 79 | 0111 1001 | y | |||
122 | 172 | 7A | 0111 1010 | z | |||
123 | 173 | 7B | 0111 1011 | { | left/opening brace | ||
124 | 174 | 7C | 0111 1100 | | | vertical bar | ||
125 | 175 | 7D | 0111 1101 | } | right/closing brace | ||
126 | 176 | 7E | 0111 1110 | ~ | tilde | ||
127 | 177 | 7F | 0111 1111 | DEL | delete |