For numbers over 255 decimal, see the notes below. Decimal Hex 0 0 1 01 2 02 3 03 4 04 5 05 6 06 7 07 8 08 9 09 10 0A 11 0B 12 0C 13 0D 14 0E 15 0F 16 10 17 11 18 12 19 13 20 14 21 15 22 16 23 17 24 18 25 19 26 1A 27 1B 28 1C 29 1D 30 1E 31 1F 32 20 33 21 34 22 35 23 36 24 37 25 38 26 39 27 40 28 41 29 42 2A 43 2B 44 2C 45 2D 46 2E 47 2F 48 30 49 31 50 32 51 33 52 34 53 35 54 36 55 37 56 38 57 39 58 3A 59 3B 60 3C 61 3D 62 3E 63 3F 64 40 65 41 66 42 67 43 68 44 69 45 70 46 71 47 72 48 73 49 74 4A 75 4B 76 4C 77 4D 78 4E 79 4F 80 50 81 51 82 52 83 53 84 54 85 55 86 56 87 57 88 58 89 59 90 5A 91 5B 92 5C 93 5D 94 5E 95 5F 96 60 97 61 98 62 99 63 100 64 101 65 102 66 103 67 104 68 105 69 106 6A 107 6B 108 6C 109 6D 110 6E 111 6F 112 70 113 71 114 72 115 73 116 74 117 75 118 76 119 77 120 78 121 79 122 7A 123 7B 124 7C 125 7D 126 7E 127 7F 128 80 129 81 130 82 131 83 132 84 133 85 134 86 135 87 136 88 137 89 138 8A 139 8B 140 8C 141 8D 142 8E 143 8F 144 90 145 91 146 92 147 93 148 94 149 95 150 96 151 97 152 98 153 99 154 9A 155 9B 156 9C 157 9D 158 9E 159 9F 160 A0 161 A1 162 A2 163 A3 164 A4 165 A5 166 A6 167 A7 168 A8 169 A9 170 AA 171 AB 172 AC 173 AD 174 AE 175 AF 176 B0 177 B1 178 B2 179 B3 180 B4 181 B5 182 B6 183 B7 184 B8 185 B9 186 BA 187 BB 188 BC 189 BD 190 BE 191 BF 192 C0 193 C1 194 C2 195 C3 196 C4 197 C5 198 C6 199 C7 200 C8 201 C9 202 CA 203 CB 204 CC 205 CD 206 CE 207 CF 208 D0 209 D1 210 D2 211 D3 212 D4 213 D5 214 D6 215 D7 216 D8 217 D9 218 DA 219 DB 220 DC 221 DD 222 DE 223 DF 224 E0 225 E1 226 E2 227 E3 228 E4 229 E5 230 E6 231 E7 232 E8 233 E9 234 EA 235 EB 236 EC 237 ED 238 EE 239 EF 240 F0 241 F1 242 F2 243 F3 244 F4 245 F5 246 F6 247 F7 248 F8 249 F9 250 FA 251 FB 252 FC 253 FD 254 FE 255 FF For numbers above 255 decimal, find the highest number below that is less than the number you're looking for. This will give you the two left hand digits. Next subtract the number below from your number and the remainder will give you the right hand two digits from above. Example: We want to find the hex number for 4201 decimal. The largest number below that is less than 4201 is 4096. This says the left hand two digits will be "10". 4201 - 4096 = 105, so from the table above the right hand two digits are "69". So, our final hex number is "1069". To convert from HEX to decimal, find the left hand two digits below and the right hand two digits above. Then just add the two decimal numbers together. For the hex number "1069", we see that "1000" = 4096 decimal and "69" = 105 decimal. 4096 + 105 = 4201 decimal. 0 0000 256 0100 512 0200 768 0300 1024 0400 1280 0500 1536 0600 1792 0700 2048 0800 2304 0900 2560 0A00 2816 0B00 3072 0C00 3328 0D00 3584 0E00 3840 0F00 4096 1000 4352 1100 4608 1200 4864 1300 5120 1400 5376 1500 5632 1600 5888 1700 6144 1800 6400 1900 6656 1A00 6912 1B00 7168 1C00 7424 1D00 7680 1E00 7936 1F00 8192 2000 8448 2100 8704 2200 8960 2300 9216 2400 9472 2500 9728 2600 9984 2700 10240 2800 10496 2900 10752 2A00 11008 2B00 11264 2C00 11520 2D00 11776 2E00 12032 2F00 12288 3000 12544 3100 12800 3200 13056 3300 13312 3400 13568 3500 13824 3600 14080 3700 14336 3800 14592 3900 14848 3A00 15104 3B00 15360 3C00 15616 3D00 15872 3E00 16128 3F00 16384 4000 16640 4100 16896 4200 17152 4300 17408 4400 17664 4500 17920 4600 18176 4700 18432 4800 18688 4900 18944 4A00 19200 4B00 19456 4C00 19712 4D00 19968 4E00 20224 4F00 20480 5000 20736 5100 20992 5200 21248 5300 21504 5400 21760 5500 22016 5600 22272 5700 22528 5800 22784 5900 23040 5A00 23296 5B00 23552 5C00 23808 5D00 24064 5E00 24320 5F00 24576 6000 24832 6100 25088 6200 25344 6300 25600 6400 25856 6500 26112 6600 26368 6700 26624 6800 26880 6900 27136 6A00 27392 6B00 27648 6C00 27904 6D00 28160 6E00 28416 6F00 28672 7000 28928 7100 29184 7200 29440 7300 29696 7400 29952 7500 30208 7600 30464 7700 30720 7800 30976 7900 31232 7A00 31488 7B00 31744 7C00 32000 7D00 32256 7E00 32512 7F00 32768 8000 33024 8100 33280 8200 33536 8300 33792 8400 34048 8500 34304 8600 34560 8700 34816 8800 35072 8900 35328 8A00 35584 8B00 35840 8C00 36096 8D00 36352 8E00 36608 8F00 36864 9000 37120 9100 37376 9200 37632 9300 37888 9400 38144 9500 38400 9600 38656 9700 38912 9800 39168 9900 39424 9A00 39680 9B00 39936 9C00 40192 9D00 40448 9E00 40704 9F00 40960 A000 41216 A100 41472 A200 41728 A300 41984 A400 42240 A500 42496 A600 42752 A700 43008 A800 43264 A900 43520 AA00 43776 AB00 44032 AC00 44288 AD00 44544 AE00 44800 AF00 45056 B000 45312 B100 45568 B200 45824 B300 46080 B400 46336 B500 46592 B600 46848 B700 47104 B800 47360 B900 47616 BA00 47872 BB00 48128 BC00 48384 BD00 48640 BE00 48896 BF00 49152 C000 49408 C100 49664 C200 49920 C300 50176 C400 50432 C500 50688 C600 50944 C700 51200 C800 51456 C900 51712 CA00 51968 CB00 52224 CC00 52480 CD00 52736 CE00 52992 CF00 53248 D000 53504 D100 53760 D200 54016 D300 54272 D400 54528 D500 54784 D600 55040 D700 55296 D800 55552 D900 55808 DA00 56064 DB00 56320 DC00 56576 DD00 56832 DE00 57088 DF00 57344 E000 57600 E100 57856 E200 58112 E300 58368 E400 58624 E500 58880 E600 59136 E700 59392 E800 59648 E900 59904 EA00 60160 EB00 60416 EC00 60672 ED00 60928 EE00 61184 EF00 61440 F000 61696 F100 61952 F200 62208 F300 62464 F400 62720 F500 62976 F600 63232 F700 63488 F800 63744 F900 64000 FA00 64256 FB00 64512 FC00 64768 FD00 65024 FE00 65280 FF00