Decimal to Hex
Convert a decimal number to hexadecimal with padding, a 0x prefix, upper or lower case and byte grouping. Handles negative numbers. Free and private.
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Need other bases? Use the Number Base Converter.
Numbers 0 to 255
| Decimal | Binary | Hex |
|---|---|---|
| 0 | 00000000 | 00 |
| 1 | 00000001 | 01 |
| 2 | 00000010 | 02 |
| 3 | 00000011 | 03 |
| 4 | 00000100 | 04 |
| 5 | 00000101 | 05 |
| 6 | 00000110 | 06 |
| 7 | 00000111 | 07 |
| 8 | 00001000 | 08 |
| 9 | 00001001 | 09 |
| 10 | 00001010 | 0A |
| 11 | 00001011 | 0B |
| 12 | 00001100 | 0C |
| 13 | 00001101 | 0D |
| 14 | 00001110 | 0E |
| 15 | 00001111 | 0F |
| 16 | 00010000 | 10 |
| 17 | 00010001 | 11 |
| 18 | 00010010 | 12 |
| 19 | 00010011 | 13 |
| 20 | 00010100 | 14 |
| 21 | 00010101 | 15 |
| 22 | 00010110 | 16 |
| 23 | 00010111 | 17 |
| 24 | 00011000 | 18 |
| 25 | 00011001 | 19 |
| 26 | 00011010 | 1A |
| 27 | 00011011 | 1B |
| 28 | 00011100 | 1C |
| 29 | 00011101 | 1D |
| 30 | 00011110 | 1E |
| 31 | 00011111 | 1F |
| 32 | 00100000 | 20 |
| 33 | 00100001 | 21 |
| 34 | 00100010 | 22 |
| 35 | 00100011 | 23 |
| 36 | 00100100 | 24 |
| 37 | 00100101 | 25 |
| 38 | 00100110 | 26 |
| 39 | 00100111 | 27 |
| 40 | 00101000 | 28 |
| 41 | 00101001 | 29 |
| 42 | 00101010 | 2A |
| 43 | 00101011 | 2B |
| 44 | 00101100 | 2C |
| 45 | 00101101 | 2D |
| 46 | 00101110 | 2E |
| 47 | 00101111 | 2F |
| 48 | 00110000 | 30 |
| 49 | 00110001 | 31 |
| 50 | 00110010 | 32 |
| 51 | 00110011 | 33 |
| 52 | 00110100 | 34 |
| 53 | 00110101 | 35 |
| 54 | 00110110 | 36 |
| 55 | 00110111 | 37 |
| 56 | 00111000 | 38 |
| 57 | 00111001 | 39 |
| 58 | 00111010 | 3A |
| 59 | 00111011 | 3B |
| 60 | 00111100 | 3C |
| 61 | 00111101 | 3D |
| 62 | 00111110 | 3E |
| 63 | 00111111 | 3F |
| 64 | 01000000 | 40 |
| 65 | 01000001 | 41 |
| 66 | 01000010 | 42 |
| 67 | 01000011 | 43 |
| 68 | 01000100 | 44 |
| 69 | 01000101 | 45 |
| 70 | 01000110 | 46 |
| 71 | 01000111 | 47 |
| 72 | 01001000 | 48 |
| 73 | 01001001 | 49 |
| 74 | 01001010 | 4A |
| 75 | 01001011 | 4B |
| 76 | 01001100 | 4C |
| 77 | 01001101 | 4D |
| 78 | 01001110 | 4E |
| 79 | 01001111 | 4F |
| 80 | 01010000 | 50 |
| 81 | 01010001 | 51 |
| 82 | 01010010 | 52 |
| 83 | 01010011 | 53 |
| 84 | 01010100 | 54 |
| 85 | 01010101 | 55 |
| 86 | 01010110 | 56 |
| 87 | 01010111 | 57 |
| 88 | 01011000 | 58 |
| 89 | 01011001 | 59 |
| 90 | 01011010 | 5A |
| 91 | 01011011 | 5B |
| 92 | 01011100 | 5C |
| 93 | 01011101 | 5D |
| 94 | 01011110 | 5E |
| 95 | 01011111 | 5F |
| 96 | 01100000 | 60 |
| 97 | 01100001 | 61 |
| 98 | 01100010 | 62 |
| 99 | 01100011 | 63 |
| 100 | 01100100 | 64 |
| 101 | 01100101 | 65 |
| 102 | 01100110 | 66 |
| 103 | 01100111 | 67 |
| 104 | 01101000 | 68 |
| 105 | 01101001 | 69 |
| 106 | 01101010 | 6A |
| 107 | 01101011 | 6B |
| 108 | 01101100 | 6C |
| 109 | 01101101 | 6D |
| 110 | 01101110 | 6E |
| 111 | 01101111 | 6F |
| 112 | 01110000 | 70 |
| 113 | 01110001 | 71 |
| 114 | 01110010 | 72 |
| 115 | 01110011 | 73 |
| 116 | 01110100 | 74 |
| 117 | 01110101 | 75 |
| 118 | 01110110 | 76 |
| 119 | 01110111 | 77 |
| 120 | 01111000 | 78 |
| 121 | 01111001 | 79 |
| 122 | 01111010 | 7A |
| 123 | 01111011 | 7B |
| 124 | 01111100 | 7C |
| 125 | 01111101 | 7D |
| 126 | 01111110 | 7E |
| 127 | 01111111 | 7F |
| 128 | 10000000 | 80 |
| 129 | 10000001 | 81 |
| 130 | 10000010 | 82 |
| 131 | 10000011 | 83 |
| 132 | 10000100 | 84 |
| 133 | 10000101 | 85 |
| 134 | 10000110 | 86 |
| 135 | 10000111 | 87 |
| 136 | 10001000 | 88 |
| 137 | 10001001 | 89 |
| 138 | 10001010 | 8A |
| 139 | 10001011 | 8B |
| 140 | 10001100 | 8C |
| 141 | 10001101 | 8D |
| 142 | 10001110 | 8E |
| 143 | 10001111 | 8F |
| 144 | 10010000 | 90 |
| 145 | 10010001 | 91 |
| 146 | 10010010 | 92 |
| 147 | 10010011 | 93 |
| 148 | 10010100 | 94 |
| 149 | 10010101 | 95 |
| 150 | 10010110 | 96 |
| 151 | 10010111 | 97 |
| 152 | 10011000 | 98 |
| 153 | 10011001 | 99 |
| 154 | 10011010 | 9A |
| 155 | 10011011 | 9B |
| 156 | 10011100 | 9C |
| 157 | 10011101 | 9D |
| 158 | 10011110 | 9E |
| 159 | 10011111 | 9F |
| 160 | 10100000 | A0 |
| 161 | 10100001 | A1 |
| 162 | 10100010 | A2 |
| 163 | 10100011 | A3 |
| 164 | 10100100 | A4 |
| 165 | 10100101 | A5 |
| 166 | 10100110 | A6 |
| 167 | 10100111 | A7 |
| 168 | 10101000 | A8 |
| 169 | 10101001 | A9 |
| 170 | 10101010 | AA |
| 171 | 10101011 | AB |
| 172 | 10101100 | AC |
| 173 | 10101101 | AD |
| 174 | 10101110 | AE |
| 175 | 10101111 | AF |
| 176 | 10110000 | B0 |
| 177 | 10110001 | B1 |
| 178 | 10110010 | B2 |
| 179 | 10110011 | B3 |
| 180 | 10110100 | B4 |
| 181 | 10110101 | B5 |
| 182 | 10110110 | B6 |
| 183 | 10110111 | B7 |
| 184 | 10111000 | B8 |
| 185 | 10111001 | B9 |
| 186 | 10111010 | BA |
| 187 | 10111011 | BB |
| 188 | 10111100 | BC |
| 189 | 10111101 | BD |
| 190 | 10111110 | BE |
| 191 | 10111111 | BF |
| 192 | 11000000 | C0 |
| 193 | 11000001 | C1 |
| 194 | 11000010 | C2 |
| 195 | 11000011 | C3 |
| 196 | 11000100 | C4 |
| 197 | 11000101 | C5 |
| 198 | 11000110 | C6 |
| 199 | 11000111 | C7 |
| 200 | 11001000 | C8 |
| 201 | 11001001 | C9 |
| 202 | 11001010 | CA |
| 203 | 11001011 | CB |
| 204 | 11001100 | CC |
| 205 | 11001101 | CD |
| 206 | 11001110 | CE |
| 207 | 11001111 | CF |
| 208 | 11010000 | D0 |
| 209 | 11010001 | D1 |
| 210 | 11010010 | D2 |
| 211 | 11010011 | D3 |
| 212 | 11010100 | D4 |
| 213 | 11010101 | D5 |
| 214 | 11010110 | D6 |
| 215 | 11010111 | D7 |
| 216 | 11011000 | D8 |
| 217 | 11011001 | D9 |
| 218 | 11011010 | DA |
| 219 | 11011011 | DB |
| 220 | 11011100 | DC |
| 221 | 11011101 | DD |
| 222 | 11011110 | DE |
| 223 | 11011111 | DF |
| 224 | 11100000 | E0 |
| 225 | 11100001 | E1 |
| 226 | 11100010 | E2 |
| 227 | 11100011 | E3 |
| 228 | 11100100 | E4 |
| 229 | 11100101 | E5 |
| 230 | 11100110 | E6 |
| 231 | 11100111 | E7 |
| 232 | 11101000 | E8 |
| 233 | 11101001 | E9 |
| 234 | 11101010 | EA |
| 235 | 11101011 | EB |
| 236 | 11101100 | EC |
| 237 | 11101101 | ED |
| 238 | 11101110 | EE |
| 239 | 11101111 | EF |
| 240 | 11110000 | F0 |
| 241 | 11110001 | F1 |
| 242 | 11110010 | F2 |
| 243 | 11110011 | F3 |
| 244 | 11110100 | F4 |
| 245 | 11110101 | F5 |
| 246 | 11110110 | F6 |
| 247 | 11110111 | F7 |
| 248 | 11111000 | F8 |
| 249 | 11111001 | F9 |
| 250 | 11111010 | FA |
| 251 | 11111011 | FB |
| 252 | 11111100 | FC |
| 253 | 11111101 | FD |
| 254 | 11111110 | FE |
| 255 | 11111111 | FF |
Shortcuts: Ctrl+Enter run · Ctrl+Shift+C copy result · / search (use ⌘ on Mac)
Next steps
Done here? Use the Send to… menu on the result to carry it on to Hex to Decimal.
Free Decimal to Hex
Type a whole number and get the hexadecimal form. Add leading zeros, the 0x prefix and groups of bytes to suit your code. It gives developers a quick browser-based way to solve a focused decimal to hex task before moving the result into a project.
How to use Decimal to Hex
Choose the formatting options. For a negative number, turn on "signed" and pick a size.
Common mistakes
- Entering a negative number without turning on "signed".
- Forgetting that a number above 255 needs two or more hex digits.
Frequently asked questions
How do you convert decimal to hex?
Divide by 16 and write the remainder (10 to 15 are A to F). Repeat with the quotient and read the remainders from the bottom up.
Why pad with zeros?
Many formats expect a fixed width, such as 8 digits for a 32-bit value.
How are negative numbers shown?
As two's complement of the chosen size. −2 in 16 bits is FFFE.
Is anything uploaded?
No. The conversion runs in your browser.
How do I use this decimal to hex tool?
Use the interactive controls above; processing stays in your browser and the result is intended as a practical starting point for development work.
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