Encoding reference / ASCII
ASCII Table and Converter
Find all 128 standard ASCII codes, copy their values, or convert text locally. A separate reference shows how named eight-bit encodings differ.
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Showing all 128 ASCII codes.
Select a row for details.
Standard ASCII: codes 0–127
The seven-bit column is the standard code. The eight-bit column shows the same value in a byte. Select a cell to copy its displayed value. Control names are shown instead of invisible characters.
| Dec | Hex | Oct | 7-bit | 8-bit | Character | Name | Description | Escape | HTML dec | HTML hex | More |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ␀ NUL | Null | Null code with no printable glyph. | — | — | |||||||
| ␁ SOH | Start of Heading | Marks the start of a message heading. | — | — | |||||||
| ␂ STX | Start of Text | Marks the start of message text. | — | — | |||||||
| ␃ ETX | End of Text | Marks the end of message text. | — | — | |||||||
| ␄ EOT | End of Transmission | Marks the end of a transmission. | — | — | |||||||
| ␅ ENQ | Enquiry | Requests a response from another device. | — | — | |||||||
| ␆ ACK | Acknowledge | Positive acknowledgment of received data. | — | — | |||||||
| ␇ BEL | Bell | Historically triggers an audible alert. | — | — | |||||||
| ␈ BS | Backspace | Moves the cursor back one position in some systems. | — | — | |||||||
| ␉ HT | Horizontal Tab | Moves to the next horizontal tab stop. | — | — | |||||||
| ␊ LF | Line Feed | Advances to a new line without returning horizontally. | — | — | |||||||
| ␋ VT | Vertical Tab | Moves to the next vertical tab stop. | — | — | |||||||
| ␌ FF | Form Feed | Advances to the next form or page. | — | — | |||||||
| ␍ CR | Carriage Return | Returns to the start of the current line. | — | — | |||||||
| ␎ SO | Shift Out | Switches to an alternate character set in older systems. | — | — | |||||||
| ␏ SI | Shift In | Switches back from an alternate character set. | — | — | |||||||
| ␐ DLE | Data Link Escape | Introduces a data-link control sequence. | — | — | |||||||
| ␑ DC1 | Device Control One | Device control code one, also known as XON. | — | — | |||||||
| ␒ DC2 | Device Control Two | Device control code two. | — | — | |||||||
| ␓ DC3 | Device Control Three | Device control code three, also known as XOFF. | — | — | |||||||
| ␔ DC4 | Device Control Four | Device control code four. | — | — | |||||||
| ␕ NAK | Negative Acknowledge | Negative acknowledgment of received data. | — | — | |||||||
| ␖ SYN | Synchronous Idle | Used as a synchronization pattern. | — | — | |||||||
| ␗ ETB | End of Transmission Block | Marks the end of a transmission block. | — | — | |||||||
| ␘ CAN | Cancel | Signals cancellation of transmitted data. | — | — | |||||||
| ␙ EM | End of Medium | Marks the end of a physical medium. | — | — | |||||||
| ␚ SUB | Substitute | Substitute for an invalid or unavailable character. | — | — | |||||||
| ␛ ESC | Escape | Introduces an escape sequence. | — | — | |||||||
| ␜ FS | File Separator | Historical file-separator control. | — | — | |||||||
| ␝ GS | Group Separator | Historical group-separator control. | — | — | |||||||
| ␞ RS | Record Separator | Historical record-separator control. | — | — | |||||||
| ␟ US | Unit Separator | Historical unit-separator control. | — | — | |||||||
| Space | Space | ||||||||||
| Exclamation mark | Exclamation mark | — | |||||||||
| Quotation mark | Quotation mark | — | |||||||||
| Number sign | Number sign | — | |||||||||
| Dollar sign | Dollar sign | — | |||||||||
| Percent sign | Percent sign | — | |||||||||
| Ampersand | Ampersand | — | |||||||||
| Apostrophe | Apostrophe | — | |||||||||
| Left parenthesis | Left parenthesis | — | |||||||||
| Right parenthesis | Right parenthesis | — | |||||||||
| Asterisk | Asterisk | — | |||||||||
| Plus sign | Plus sign | — | |||||||||
| Comma | Comma | — | |||||||||
| Hyphen-minus | Hyphen-minus | — | |||||||||
| Full stop | Full stop | — | |||||||||
| Solidus | Solidus | — | |||||||||
| Digit 0 | Digit 0 | — | |||||||||
| Digit 1 | Digit 1 | — | |||||||||
| Digit 2 | Digit 2 | — | |||||||||
| Digit 3 | Digit 3 | — | |||||||||
| Digit 4 | Digit 4 | — | |||||||||
| Digit 5 | Digit 5 | — | |||||||||
| Digit 6 | Digit 6 | — | |||||||||
| Digit 7 | Digit 7 | — | |||||||||
| Digit 8 | Digit 8 | — | |||||||||
| Digit 9 | Digit 9 | — | |||||||||
| Colon | Colon | — | |||||||||
| Semicolon | Semicolon | — | |||||||||
| Less-than sign | Less-than sign | — | |||||||||
| Equals sign | Equals sign | — | |||||||||
| Greater-than sign | Greater-than sign | — | |||||||||
| Question mark | Question mark | — | |||||||||
| Commercial at | Commercial at | — | |||||||||
| Uppercase A | Uppercase A | — | |||||||||
| Uppercase B | Uppercase B | — | |||||||||
| Uppercase C | Uppercase C | — | |||||||||
| Uppercase D | Uppercase D | — | |||||||||
| Uppercase E | Uppercase E | — | |||||||||
| Uppercase F | Uppercase F | — | |||||||||
| Uppercase G | Uppercase G | — | |||||||||
| Uppercase H | Uppercase H | — | |||||||||
| Uppercase I | Uppercase I | — | |||||||||
| Uppercase J | Uppercase J | — | |||||||||
| Uppercase K | Uppercase K | — | |||||||||
| Uppercase L | Uppercase L | — | |||||||||
| Uppercase M | Uppercase M | — | |||||||||
| Uppercase N | Uppercase N | — | |||||||||
| Uppercase O | Uppercase O | — | |||||||||
| Uppercase P | Uppercase P | — | |||||||||
| Uppercase Q | Uppercase Q | — | |||||||||
| Uppercase R | Uppercase R | — | |||||||||
| Uppercase S | Uppercase S | — | |||||||||
| Uppercase T | Uppercase T | — | |||||||||
| Uppercase U | Uppercase U | — | |||||||||
| Uppercase V | Uppercase V | — | |||||||||
| Uppercase W | Uppercase W | — | |||||||||
| Uppercase X | Uppercase X | — | |||||||||
| Uppercase Y | Uppercase Y | — | |||||||||
| Uppercase Z | Uppercase Z | — | |||||||||
| Left square bracket | Left square bracket | — | |||||||||
| Reverse solidus | Reverse solidus | — | |||||||||
| Right square bracket | Right square bracket | — | |||||||||
| Circumflex accent | Circumflex accent | — | |||||||||
| Low line | Low line | — | |||||||||
| Grave accent | Grave accent | — | |||||||||
| Lowercase a | Lowercase a | — | |||||||||
| Lowercase b | Lowercase b | — | |||||||||
| Lowercase c | Lowercase c | — | |||||||||
| Lowercase d | Lowercase d | — | |||||||||
| Lowercase e | Lowercase e | — | |||||||||
| Lowercase f | Lowercase f | — | |||||||||
| Lowercase g | Lowercase g | — | |||||||||
| Lowercase h | Lowercase h | — | |||||||||
| Lowercase i | Lowercase i | — | |||||||||
| Lowercase j | Lowercase j | — | |||||||||
| Lowercase k | Lowercase k | — | |||||||||
| Lowercase l | Lowercase l | — | |||||||||
| Lowercase m | Lowercase m | — | |||||||||
| Lowercase n | Lowercase n | — | |||||||||
| Lowercase o | Lowercase o | — | |||||||||
| Lowercase p | Lowercase p | — | |||||||||
| Lowercase q | Lowercase q | — | |||||||||
| Lowercase r | Lowercase r | — | |||||||||
| Lowercase s | Lowercase s | — | |||||||||
| Lowercase t | Lowercase t | — | |||||||||
| Lowercase u | Lowercase u | — | |||||||||
| Lowercase v | Lowercase v | — | |||||||||
| Lowercase w | Lowercase w | — | |||||||||
| Lowercase x | Lowercase x | — | |||||||||
| Lowercase y | Lowercase y | — | |||||||||
| Lowercase z | Lowercase z | — | |||||||||
| Left curly bracket | Left curly bracket | — | |||||||||
| Vertical line | Vertical line | — | |||||||||
| Right curly bracket | Right curly bracket | — | |||||||||
| Tilde | Tilde | — | |||||||||
| ␡ DEL | Delete | Historically marks a deleted character. | — | — |
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Named eight-bit byte references
Values 128–255 are outside standard ASCII. Choose an encoding to see what each byte means. These references do not change the strict ASCII converter above.
| Byte dec | Byte hex | Byte binary | Unicode mapping | Character | Name or state |
|---|---|---|---|---|---|
| 128 | 80 | 10000000 | U+20AC | € | Euro sign |
| 129 | 81 | 10000001 | — | — | Undefined |
| 130 | 82 | 10000010 | U+201A | ‚ | Single low-9 quotation mark |
| 131 | 83 | 10000011 | U+0192 | ƒ | Latin small letter f with hook |
| 132 | 84 | 10000100 | U+201E | „ | Double low-9 quotation mark |
| 133 | 85 | 10000101 | U+2026 | … | Horizontal ellipsis |
| 134 | 86 | 10000110 | U+2020 | † | Dagger |
| 135 | 87 | 10000111 | U+2021 | ‡ | Double dagger |
| 136 | 88 | 10001000 | U+02C6 | ˆ | Modifier letter circumflex accent |
| 137 | 89 | 10001001 | U+2030 | ‰ | Per mille sign |
| 138 | 8A | 10001010 | U+0160 | Š | Latin capital letter S with caron |
| 139 | 8B | 10001011 | U+2039 | ‹ | Single left-pointing angle quotation mark |
| 140 | 8C | 10001100 | U+0152 | Π| Latin capital ligature OE |
| 141 | 8D | 10001101 | — | — | Undefined |
| 142 | 8E | 10001110 | U+017D | Ž | Latin capital letter Z with caron |
| 143 | 8F | 10001111 | — | — | Undefined |
| 144 | 90 | 10010000 | — | — | Undefined |
| 145 | 91 | 10010001 | U+2018 | ‘ | Left single quotation mark |
| 146 | 92 | 10010010 | U+2019 | ’ | Right single quotation mark |
| 147 | 93 | 10010011 | U+201C | “ | Left double quotation mark |
| 148 | 94 | 10010100 | U+201D | ” | Right double quotation mark |
| 149 | 95 | 10010101 | U+2022 | • | Bullet |
| 150 | 96 | 10010110 | U+2013 | – | En dash |
| 151 | 97 | 10010111 | U+2014 | — | Em dash |
| 152 | 98 | 10011000 | U+02DC | ˜ | Small tilde |
| 153 | 99 | 10011001 | U+2122 | ™ | Trade mark sign |
| 154 | 9A | 10011010 | U+0161 | š | Latin small letter s with caron |
| 155 | 9B | 10011011 | U+203A | › | Single right-pointing angle quotation mark |
| 156 | 9C | 10011100 | U+0153 | œ | Latin small ligature oe |
| 157 | 9D | 10011101 | — | — | Undefined |
| 158 | 9E | 10011110 | U+017E | ž | Latin small letter z with caron |
| 159 | 9F | 10011111 | U+0178 | Ÿ | Latin capital letter Y with diaeresis |
| 160 | A0 | 10100000 | U+00A0 | Unicode U+00A0 | |
| 161 | A1 | 10100001 | U+00A1 | ¡ | Unicode U+00A1 |
| 162 | A2 | 10100010 | U+00A2 | ¢ | Unicode U+00A2 |
| 163 | A3 | 10100011 | U+00A3 | £ | Unicode U+00A3 |
| 164 | A4 | 10100100 | U+00A4 | ¤ | Unicode U+00A4 |
| 165 | A5 | 10100101 | U+00A5 | ¥ | Unicode U+00A5 |
| 166 | A6 | 10100110 | U+00A6 | ¦ | Unicode U+00A6 |
| 167 | A7 | 10100111 | U+00A7 | § | Unicode U+00A7 |
| 168 | A8 | 10101000 | U+00A8 | ¨ | Unicode U+00A8 |
| 169 | A9 | 10101001 | U+00A9 | © | Unicode U+00A9 |
| 170 | AA | 10101010 | U+00AA | ª | Unicode U+00AA |
| 171 | AB | 10101011 | U+00AB | « | Unicode U+00AB |
| 172 | AC | 10101100 | U+00AC | ¬ | Unicode U+00AC |
| 173 | AD | 10101101 | U+00AD | | Unicode U+00AD |
| 174 | AE | 10101110 | U+00AE | ® | Unicode U+00AE |
| 175 | AF | 10101111 | U+00AF | ¯ | Unicode U+00AF |
| 176 | B0 | 10110000 | U+00B0 | ° | Unicode U+00B0 |
| 177 | B1 | 10110001 | U+00B1 | ± | Unicode U+00B1 |
| 178 | B2 | 10110010 | U+00B2 | ² | Unicode U+00B2 |
| 179 | B3 | 10110011 | U+00B3 | ³ | Unicode U+00B3 |
| 180 | B4 | 10110100 | U+00B4 | ´ | Unicode U+00B4 |
| 181 | B5 | 10110101 | U+00B5 | µ | Unicode U+00B5 |
| 182 | B6 | 10110110 | U+00B6 | ¶ | Unicode U+00B6 |
| 183 | B7 | 10110111 | U+00B7 | · | Unicode U+00B7 |
| 184 | B8 | 10111000 | U+00B8 | ¸ | Unicode U+00B8 |
| 185 | B9 | 10111001 | U+00B9 | ¹ | Unicode U+00B9 |
| 186 | BA | 10111010 | U+00BA | º | Unicode U+00BA |
| 187 | BB | 10111011 | U+00BB | » | Unicode U+00BB |
| 188 | BC | 10111100 | U+00BC | ¼ | Unicode U+00BC |
| 189 | BD | 10111101 | U+00BD | ½ | Unicode U+00BD |
| 190 | BE | 10111110 | U+00BE | ¾ | Unicode U+00BE |
| 191 | BF | 10111111 | U+00BF | ¿ | Unicode U+00BF |
| 192 | C0 | 11000000 | U+00C0 | À | Unicode U+00C0 |
| 193 | C1 | 11000001 | U+00C1 | Á | Unicode U+00C1 |
| 194 | C2 | 11000010 | U+00C2 | Â | Unicode U+00C2 |
| 195 | C3 | 11000011 | U+00C3 | Ã | Unicode U+00C3 |
| 196 | C4 | 11000100 | U+00C4 | Ä | Unicode U+00C4 |
| 197 | C5 | 11000101 | U+00C5 | Å | Unicode U+00C5 |
| 198 | C6 | 11000110 | U+00C6 | Æ | Unicode U+00C6 |
| 199 | C7 | 11000111 | U+00C7 | Ç | Unicode U+00C7 |
| 200 | C8 | 11001000 | U+00C8 | È | Unicode U+00C8 |
| 201 | C9 | 11001001 | U+00C9 | É | Unicode U+00C9 |
| 202 | CA | 11001010 | U+00CA | Ê | Unicode U+00CA |
| 203 | CB | 11001011 | U+00CB | Ë | Unicode U+00CB |
| 204 | CC | 11001100 | U+00CC | Ì | Unicode U+00CC |
| 205 | CD | 11001101 | U+00CD | Í | Unicode U+00CD |
| 206 | CE | 11001110 | U+00CE | Î | Unicode U+00CE |
| 207 | CF | 11001111 | U+00CF | Ï | Unicode U+00CF |
| 208 | D0 | 11010000 | U+00D0 | Ð | Unicode U+00D0 |
| 209 | D1 | 11010001 | U+00D1 | Ñ | Unicode U+00D1 |
| 210 | D2 | 11010010 | U+00D2 | Ò | Unicode U+00D2 |
| 211 | D3 | 11010011 | U+00D3 | Ó | Unicode U+00D3 |
| 212 | D4 | 11010100 | U+00D4 | Ô | Unicode U+00D4 |
| 213 | D5 | 11010101 | U+00D5 | Õ | Unicode U+00D5 |
| 214 | D6 | 11010110 | U+00D6 | Ö | Unicode U+00D6 |
| 215 | D7 | 11010111 | U+00D7 | × | Unicode U+00D7 |
| 216 | D8 | 11011000 | U+00D8 | Ø | Unicode U+00D8 |
| 217 | D9 | 11011001 | U+00D9 | Ù | Unicode U+00D9 |
| 218 | DA | 11011010 | U+00DA | Ú | Unicode U+00DA |
| 219 | DB | 11011011 | U+00DB | Û | Unicode U+00DB |
| 220 | DC | 11011100 | U+00DC | Ü | Unicode U+00DC |
| 221 | DD | 11011101 | U+00DD | Ý | Unicode U+00DD |
| 222 | DE | 11011110 | U+00DE | Þ | Unicode U+00DE |
| 223 | DF | 11011111 | U+00DF | ß | Unicode U+00DF |
| 224 | E0 | 11100000 | U+00E0 | à | Unicode U+00E0 |
| 225 | E1 | 11100001 | U+00E1 | á | Unicode U+00E1 |
| 226 | E2 | 11100010 | U+00E2 | â | Unicode U+00E2 |
| 227 | E3 | 11100011 | U+00E3 | ã | Unicode U+00E3 |
| 228 | E4 | 11100100 | U+00E4 | ä | Unicode U+00E4 |
| 229 | E5 | 11100101 | U+00E5 | å | Unicode U+00E5 |
| 230 | E6 | 11100110 | U+00E6 | æ | Unicode U+00E6 |
| 231 | E7 | 11100111 | U+00E7 | ç | Unicode U+00E7 |
| 232 | E8 | 11101000 | U+00E8 | è | Unicode U+00E8 |
| 233 | E9 | 11101001 | U+00E9 | é | Unicode U+00E9 |
| 234 | EA | 11101010 | U+00EA | ê | Unicode U+00EA |
| 235 | EB | 11101011 | U+00EB | ë | Unicode U+00EB |
| 236 | EC | 11101100 | U+00EC | ì | Unicode U+00EC |
| 237 | ED | 11101101 | U+00ED | í | Unicode U+00ED |
| 238 | EE | 11101110 | U+00EE | î | Unicode U+00EE |
| 239 | EF | 11101111 | U+00EF | ï | Unicode U+00EF |
| 240 | F0 | 11110000 | U+00F0 | ð | Unicode U+00F0 |
| 241 | F1 | 11110001 | U+00F1 | ñ | Unicode U+00F1 |
| 242 | F2 | 11110010 | U+00F2 | ò | Unicode U+00F2 |
| 243 | F3 | 11110011 | U+00F3 | ó | Unicode U+00F3 |
| 244 | F4 | 11110100 | U+00F4 | ô | Unicode U+00F4 |
| 245 | F5 | 11110101 | U+00F5 | õ | Unicode U+00F5 |
| 246 | F6 | 11110110 | U+00F6 | ö | Unicode U+00F6 |
| 247 | F7 | 11110111 | U+00F7 | ÷ | Unicode U+00F7 |
| 248 | F8 | 11111000 | U+00F8 | ø | Unicode U+00F8 |
| 249 | F9 | 11111001 | U+00F9 | ù | Unicode U+00F9 |
| 250 | FA | 11111010 | U+00FA | ú | Unicode U+00FA |
| 251 | FB | 11111011 | U+00FB | û | Unicode U+00FB |
| 252 | FC | 11111100 | U+00FC | ü | Unicode U+00FC |
| 253 | FD | 11111101 | U+00FD | ý | Unicode U+00FD |
| 254 | FE | 11111110 | U+00FE | þ | Unicode U+00FE |
| 255 | FF | 11111111 | U+00FF | ÿ | Unicode U+00FF |
What is ASCII?
ASCII assigns 7-bit codes 0 through 127 to letters, digits, punctuation and control characters. Codes 0–31 and 127 are controls. Space is code 32, uppercase A is 65, and lowercase a is 97. A displayed eight-bit byte adds a leading zero; it does not extend ASCII.
Common control codes
Tab is 9 (HT), line feed is 10 (LF), carriage return is 13 (CR), and delete is 127 (DEL). LF moves to a new line; CR historically returns to the start of a line. Many text files use LF or CR followed by LF for line endings. The visible control pictures in the converter are labels; copying the exact result preserves the actual codes.
Why are there different eight-bit tables?
ASCII defines only 0–127. Windows-1252 and ISO-8859-1 assign different meanings to some bytes above 127: byte 0x80 is a euro sign in Windows-1252 but a C1 control in ISO-8859-1. An HTML numeric reference names a Unicode character, not a byte in either encoding. Undefined Windows-1252 bytes remain undefined here.
How to convert text
Choose Text to codes or Codes to text and a base, then select Convert. Encoded codes are space-separated. For decoding, spaces, tabs, newlines or single commas separate codes. Hex can use a 0x prefix and binary a 0b prefix. The tool rejects non-ASCII text and codes above 127 instead of silently changing them. Input and output are limited to 2 MiB each.
Need UTF-8 text and binary bytes? Open the binary converter →
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