Hexadecimal Table (0-255)
Full 0-255 hex, decimal, and binary lookup table — scan every byte value at once instead of converting one number at a time.
How to Read This Table
Each row is one byte value (0-255), shown in all three bases side by side. The hex column matches how the value is usually written in code (with a 0x prefix, uppercase digits); the binary column is padded to a full 8 bits so every row lines up.
Where This Table Actually Comes Up
Reading a Hex Dump
Scanning a raw byte dump is faster when you can cross-reference several values at once against a table rather than converting each one individually.
0x4B, 0x65, 0x79 in a memory dump
Memorizing Common Byte Values
Frequently used values like 0x7F, 0x80, and 0xFF come up often enough in low-level work that having the full range visible at once helps them stick.
0x7F = 127, 0x80 = 128, 0xFF = 255
Checking Binary Patterns at a Glance
Seeing the binary column next to hex makes bit patterns (like powers of two, or all-1s bytes) easy to spot without converting each one by hand.
0x80 = 1000 0000 (bit 7 only)
Full Table: 0-255
| Hex | Decimal | Binary |
|---|---|---|
| 0x00 | 0 | 00000000 |
| 0x01 | 1 | 00000001 |
| 0x02 | 2 | 00000010 |
| 0x03 | 3 | 00000011 |
| 0x04 | 4 | 00000100 |
| 0x05 | 5 | 00000101 |
| 0x06 | 6 | 00000110 |
| 0x07 | 7 | 00000111 |
| 0x08 | 8 | 00001000 |
| 0x09 | 9 | 00001001 |
| 0x0A | 10 | 00001010 |
| 0x0B | 11 | 00001011 |
| 0x0C | 12 | 00001100 |
| 0x0D | 13 | 00001101 |
| 0x0E | 14 | 00001110 |
| 0x0F | 15 | 00001111 |
| 0x10 | 16 | 00010000 |
| 0x11 | 17 | 00010001 |
| 0x12 | 18 | 00010010 |
| 0x13 | 19 | 00010011 |
| 0x14 | 20 | 00010100 |
| 0x15 | 21 | 00010101 |
| 0x16 | 22 | 00010110 |
| 0x17 | 23 | 00010111 |
| 0x18 | 24 | 00011000 |
| 0x19 | 25 | 00011001 |
| 0x1A | 26 | 00011010 |
| 0x1B | 27 | 00011011 |
| 0x1C | 28 | 00011100 |
| 0x1D | 29 | 00011101 |
| 0x1E | 30 | 00011110 |
| 0x1F | 31 | 00011111 |
| 0x20 | 32 | 00100000 |
| 0x21 | 33 | 00100001 |
| 0x22 | 34 | 00100010 |
| 0x23 | 35 | 00100011 |
| 0x24 | 36 | 00100100 |
| 0x25 | 37 | 00100101 |
| 0x26 | 38 | 00100110 |
| 0x27 | 39 | 00100111 |
| 0x28 | 40 | 00101000 |
| 0x29 | 41 | 00101001 |
| 0x2A | 42 | 00101010 |
| 0x2B | 43 | 00101011 |
| 0x2C | 44 | 00101100 |
| 0x2D | 45 | 00101101 |
| 0x2E | 46 | 00101110 |
| 0x2F | 47 | 00101111 |
| 0x30 | 48 | 00110000 |
| 0x31 | 49 | 00110001 |
| 0x32 | 50 | 00110010 |
| 0x33 | 51 | 00110011 |
| 0x34 | 52 | 00110100 |
| 0x35 | 53 | 00110101 |
| 0x36 | 54 | 00110110 |
| 0x37 | 55 | 00110111 |
| 0x38 | 56 | 00111000 |
| 0x39 | 57 | 00111001 |
| 0x3A | 58 | 00111010 |
| 0x3B | 59 | 00111011 |
| 0x3C | 60 | 00111100 |
| 0x3D | 61 | 00111101 |
| 0x3E | 62 | 00111110 |
| 0x3F | 63 | 00111111 |
| 0x40 | 64 | 01000000 |
| 0x41 | 65 | 01000001 |
| 0x42 | 66 | 01000010 |
| 0x43 | 67 | 01000011 |
| 0x44 | 68 | 01000100 |
| 0x45 | 69 | 01000101 |
| 0x46 | 70 | 01000110 |
| 0x47 | 71 | 01000111 |
| 0x48 | 72 | 01001000 |
| 0x49 | 73 | 01001001 |
| 0x4A | 74 | 01001010 |
| 0x4B | 75 | 01001011 |
| 0x4C | 76 | 01001100 |
| 0x4D | 77 | 01001101 |
| 0x4E | 78 | 01001110 |
| 0x4F | 79 | 01001111 |
| 0x50 | 80 | 01010000 |
| 0x51 | 81 | 01010001 |
| 0x52 | 82 | 01010010 |
| 0x53 | 83 | 01010011 |
| 0x54 | 84 | 01010100 |
| 0x55 | 85 | 01010101 |
| 0x56 | 86 | 01010110 |
| 0x57 | 87 | 01010111 |
| 0x58 | 88 | 01011000 |
| 0x59 | 89 | 01011001 |
| 0x5A | 90 | 01011010 |
| 0x5B | 91 | 01011011 |
| 0x5C | 92 | 01011100 |
| 0x5D | 93 | 01011101 |
| 0x5E | 94 | 01011110 |
| 0x5F | 95 | 01011111 |
| 0x60 | 96 | 01100000 |
| 0x61 | 97 | 01100001 |
| 0x62 | 98 | 01100010 |
| 0x63 | 99 | 01100011 |
| 0x64 | 100 | 01100100 |
| 0x65 | 101 | 01100101 |
| 0x66 | 102 | 01100110 |
| 0x67 | 103 | 01100111 |
| 0x68 | 104 | 01101000 |
| 0x69 | 105 | 01101001 |
| 0x6A | 106 | 01101010 |
| 0x6B | 107 | 01101011 |
| 0x6C | 108 | 01101100 |
| 0x6D | 109 | 01101101 |
| 0x6E | 110 | 01101110 |
| 0x6F | 111 | 01101111 |
| 0x70 | 112 | 01110000 |
| 0x71 | 113 | 01110001 |
| 0x72 | 114 | 01110010 |
| 0x73 | 115 | 01110011 |
| 0x74 | 116 | 01110100 |
| 0x75 | 117 | 01110101 |
| 0x76 | 118 | 01110110 |
| 0x77 | 119 | 01110111 |
| 0x78 | 120 | 01111000 |
| 0x79 | 121 | 01111001 |
| 0x7A | 122 | 01111010 |
| 0x7B | 123 | 01111011 |
| 0x7C | 124 | 01111100 |
| 0x7D | 125 | 01111101 |
| 0x7E | 126 | 01111110 |
| 0x7F | 127 | 01111111 |
| 0x80 | 128 | 10000000 |
| 0x81 | 129 | 10000001 |
| 0x82 | 130 | 10000010 |
| 0x83 | 131 | 10000011 |
| 0x84 | 132 | 10000100 |
| 0x85 | 133 | 10000101 |
| 0x86 | 134 | 10000110 |
| 0x87 | 135 | 10000111 |
| 0x88 | 136 | 10001000 |
| 0x89 | 137 | 10001001 |
| 0x8A | 138 | 10001010 |
| 0x8B | 139 | 10001011 |
| 0x8C | 140 | 10001100 |
| 0x8D | 141 | 10001101 |
| 0x8E | 142 | 10001110 |
| 0x8F | 143 | 10001111 |
| 0x90 | 144 | 10010000 |
| 0x91 | 145 | 10010001 |
| 0x92 | 146 | 10010010 |
| 0x93 | 147 | 10010011 |
| 0x94 | 148 | 10010100 |
| 0x95 | 149 | 10010101 |
| 0x96 | 150 | 10010110 |
| 0x97 | 151 | 10010111 |
| 0x98 | 152 | 10011000 |
| 0x99 | 153 | 10011001 |
| 0x9A | 154 | 10011010 |
| 0x9B | 155 | 10011011 |
| 0x9C | 156 | 10011100 |
| 0x9D | 157 | 10011101 |
| 0x9E | 158 | 10011110 |
| 0x9F | 159 | 10011111 |
| 0xA0 | 160 | 10100000 |
| 0xA1 | 161 | 10100001 |
| 0xA2 | 162 | 10100010 |
| 0xA3 | 163 | 10100011 |
| 0xA4 | 164 | 10100100 |
| 0xA5 | 165 | 10100101 |
| 0xA6 | 166 | 10100110 |
| 0xA7 | 167 | 10100111 |
| 0xA8 | 168 | 10101000 |
| 0xA9 | 169 | 10101001 |
| 0xAA | 170 | 10101010 |
| 0xAB | 171 | 10101011 |
| 0xAC | 172 | 10101100 |
| 0xAD | 173 | 10101101 |
| 0xAE | 174 | 10101110 |
| 0xAF | 175 | 10101111 |
| 0xB0 | 176 | 10110000 |
| 0xB1 | 177 | 10110001 |
| 0xB2 | 178 | 10110010 |
| 0xB3 | 179 | 10110011 |
| 0xB4 | 180 | 10110100 |
| 0xB5 | 181 | 10110101 |
| 0xB6 | 182 | 10110110 |
| 0xB7 | 183 | 10110111 |
| 0xB8 | 184 | 10111000 |
| 0xB9 | 185 | 10111001 |
| 0xBA | 186 | 10111010 |
| 0xBB | 187 | 10111011 |
| 0xBC | 188 | 10111100 |
| 0xBD | 189 | 10111101 |
| 0xBE | 190 | 10111110 |
| 0xBF | 191 | 10111111 |
| 0xC0 | 192 | 11000000 |
| 0xC1 | 193 | 11000001 |
| 0xC2 | 194 | 11000010 |
| 0xC3 | 195 | 11000011 |
| 0xC4 | 196 | 11000100 |
| 0xC5 | 197 | 11000101 |
| 0xC6 | 198 | 11000110 |
| 0xC7 | 199 | 11000111 |
| 0xC8 | 200 | 11001000 |
| 0xC9 | 201 | 11001001 |
| 0xCA | 202 | 11001010 |
| 0xCB | 203 | 11001011 |
| 0xCC | 204 | 11001100 |
| 0xCD | 205 | 11001101 |
| 0xCE | 206 | 11001110 |
| 0xCF | 207 | 11001111 |
| 0xD0 | 208 | 11010000 |
| 0xD1 | 209 | 11010001 |
| 0xD2 | 210 | 11010010 |
| 0xD3 | 211 | 11010011 |
| 0xD4 | 212 | 11010100 |
| 0xD5 | 213 | 11010101 |
| 0xD6 | 214 | 11010110 |
| 0xD7 | 215 | 11010111 |
| 0xD8 | 216 | 11011000 |
| 0xD9 | 217 | 11011001 |
| 0xDA | 218 | 11011010 |
| 0xDB | 219 | 11011011 |
| 0xDC | 220 | 11011100 |
| 0xDD | 221 | 11011101 |
| 0xDE | 222 | 11011110 |
| 0xDF | 223 | 11011111 |
| 0xE0 | 224 | 11100000 |
| 0xE1 | 225 | 11100001 |
| 0xE2 | 226 | 11100010 |
| 0xE3 | 227 | 11100011 |
| 0xE4 | 228 | 11100100 |
| 0xE5 | 229 | 11100101 |
| 0xE6 | 230 | 11100110 |
| 0xE7 | 231 | 11100111 |
| 0xE8 | 232 | 11101000 |
| 0xE9 | 233 | 11101001 |
| 0xEA | 234 | 11101010 |
| 0xEB | 235 | 11101011 |
| 0xEC | 236 | 11101100 |
| 0xED | 237 | 11101101 |
| 0xEE | 238 | 11101110 |
| 0xEF | 239 | 11101111 |
| 0xF0 | 240 | 11110000 |
| 0xF1 | 241 | 11110001 |
| 0xF2 | 242 | 11110010 |
| 0xF3 | 243 | 11110011 |
| 0xF4 | 244 | 11110100 |
| 0xF5 | 245 | 11110101 |
| 0xF6 | 246 | 11110110 |
| 0xF7 | 247 | 11110111 |
| 0xF8 | 248 | 11111000 |
| 0xF9 | 249 | 11111001 |
| 0xFA | 250 | 11111010 |
| 0xFB | 251 | 11111011 |
| 0xFC | 252 | 11111100 |
| 0xFD | 253 | 11111101 |
| 0xFE | 254 | 11111110 |
| 0xFF | 255 | 11111111 |
Further reading: Hexadecimal — Wikipedia
Limitations
- Covers single-byte values (0-255) only — for larger numbers, use the Hex to Decimal or Hex to Binary converters directly.
Frequently Asked Questions
Why does this table stop at 255?
255 (0xFF) is the largest value a single byte can hold — this covers the full range of one byte, the unit most hex tables and hex dumps are organized around.
When should I use this table instead of a calculator?
When you need to scan a whole range at once — checking several byte values in a row, or getting a feel for how hex, decimal, and binary line up — rather than converting a single number.
Is there a faster way to find one specific value?
Use your browser's find-in-page (Ctrl+F / Cmd+F) and search for the hex, decimal, or binary value you're looking for — faster than scrolling for a single lookup.
Why is the binary column always 8 digits?
It's padded with leading zeros to a full byte (8 bits) for every row, so the columns stay visually aligned and each row represents exactly one byte, even for small values like 0x01.